Updates for R compiler.

37 files changed, 2433 insertions, 2078 deletions

diff --git a/commands.md b/commands.md
index 148ad9040..961d0220b 100644
--- a/commands.md
+++ b/commands.md
@@ -44,7 +44,7 @@ cd ~/lux/lux-bootstrapper/ && lein clean && lein install
 ## Run JBE
 
 ```
-cd ~/lux/jbe/ && ./jbe.sh
+cd ~/lux/jbe/bin/ && java ee.ioc.cs.jbe.browser.BrowserApplication
 ```
 
 ---
diff --git a/compilers.md b/compilers.md
index 5494eafd4..4277a07f7 100644
--- a/compilers.md
+++ b/compilers.md
@@ -1,38 +1,3 @@
-# R compiler
-
-## Test
-
-```
-cd ~/lux/lux-r/ && lein lux auto test
-cd ~/lux/lux-r/ && lein clean && lein lux auto test
-```
-
-## Build
-
-```
-cd ~/lux/lux-r/ && lein lux auto build
-cd ~/lux/lux-r/ && lein clean && lein lux auto build
-```
-
-## REPL
-
-```
-cd ~/lux/lux-r/ && java -jar target/program.jar repl --source ~/lux/stdlib/source --target ~/lux/stdlib/target
-```
-
-## Try
-
-```
-cd ~/lux/lux-r/ && time java -jar target/program.jar build --source ~/lux/stdlib/source --target ~/lux/stdlib/target --module test/lux
-cd ~/lux/stdlib/ && lein clean && cd ~/lux/lux-r/ && time java -jar target/program.jar build --source ~/lux/stdlib/source --target ~/lux/stdlib/target --module test/lux
-cd ~/lux/stdlib/ && lein clean && cd ~/lux/lux-r/ && time java -jar target/program.jar build --source ~/lux/stdlib/source --library ~/lux/stdlib/target/library.tar --target ~/lux/stdlib/target --module test/lux
-cd ~/lux/lux-r/ && java -jar target/program.jar export --source ~/lux/stdlib/source --target ~/lux/stdlib/target
-
-cd ~/lux/stdlib/target/ && java -jar program.jar
-```
-
----
-
 # Compiler trial
 
 ## Build
diff --git a/lux-r/commands.md b/lux-r/commands.md
new file mode 100644
index 000000000..dd982fab6
--- /dev/null
+++ b/lux-r/commands.md
@@ -0,0 +1,35 @@
+# R compiler
+
+## Test
+
+```
+cd ~/lux/lux-r/ && lein lux auto test
+cd ~/lux/lux-r/ && lein clean && lein lux auto test
+```
+
+## Build
+
+```
+## Develop
+cd ~/lux/lux-r/ \
+&& lein clean \
+&& lein lux auto build
+```
+
+## REPL
+
+```
+cd ~/lux/lux-r/ && java -jar target/program.jar repl --source ~/lux/stdlib/source --target ~/lux/stdlib/target
+```
+
+## Try
+
+```
+cd ~/lux/lux-r/ && time java -jar target/program.jar build --source ~/lux/stdlib/source --target ~/lux/stdlib/target --module test/lux
+cd ~/lux/stdlib/ && lein clean && cd ~/lux/lux-r/ && time java -jar target/program.jar build --source ~/lux/stdlib/source --target ~/lux/stdlib/target --module test/lux
+cd ~/lux/stdlib/ && lein clean && cd ~/lux/lux-r/ && time java -jar target/program.jar build --source ~/lux/stdlib/source --library ~/lux/stdlib/target/library.tar --target ~/lux/stdlib/target --module test/lux
+cd ~/lux/lux-r/ && java -jar target/program.jar export --source ~/lux/stdlib/source --target ~/lux/stdlib/target
+
+cd ~/lux/stdlib/target/ && java -jar program.jar
+```
+
diff --git a/lux-r/project.clj b/lux-r/project.clj
index 96e02e021..ce41ff448 100644
--- a/lux-r/project.clj
+++ b/lux-r/project.clj
@@ -24,8 +24,7 @@
 
   :dependencies [[com.github.luxlang/luxc-jvm ~version]
                  [com.github.luxlang/stdlib ~version]
-                 ;; JVM Bytecode
-                 [org.ow2.asm/asm-all "5.0.3"]]
+                 [org.renjin/renjin-script-engine "3.5-beta43"]]
   
   :manifest {"lux" ~version}
   :source-paths ["source"]
diff --git a/lux-r/source/luxc/lang/host/r.lux b/lux-r/source/luxc/lang/host/r.lux
deleted file mode 100644
index 6e4c7fb5b..000000000
--- a/lux-r/source/luxc/lang/host/r.lux
+++ /dev/null
@@ -1,299 +0,0 @@
-(.module:
-  [lux #- not or and list if function cond when]
-  (lux (control pipe)
-       (data [maybe "maybe/" Functor<Maybe>]
-             [text]
-             text/format
-             [number]
-             (coll [list "list/" Functor<List> Fold<List>]))
-       (type abstract)))
-
-(abstract: #export Single {} Any)
-(abstract: #export Poly {} Any)
-
-(abstract: #export (Var kind)
-  {}
-
-  Text
-
-  (def: name (All [k] (-> (Var k) Text)) (|>> :representation))
-
-  (def: #export var (-> Text (Var Single)) (|>> :abstraction))
-  (def: #export var-args (Var Poly) (:abstraction "..."))
-  )
-
-(type: #export SVar (Var Single))
-(type: #export PVar (Var Poly))
-
-(abstract: #export Expression
-  {}
-  
-  Text
-
-  (def: #export expression (-> Expression Text) (|>> :representation))
-
-  (def: #export code (-> Text Expression) (|>> :abstraction))
-
-  (def: (self-contained code)
-    (-> Text Expression)
-    (:abstraction
-     (format "(" code ")")))
-
-  (def: nest
-    (-> Text Text)
-    (|>> (format "\n")
-         (text.replace-all "\n" "\n  ")))
-
-  (def: (_block expression)
-    (-> Text Text)
-    (format "{" (nest expression) "\n" "}"))
-
-  (def: #export (block expression)
-    (-> Expression Expression)
-    (:abstraction
-     (format "{" (:representation expression) "}")))
-
-  (def: #export null
-    Expression
-    (|> "NULL" self-contained))
-
-  (def: #export n/a
-    Expression
-    (|> "NA" self-contained))
-
-  (def: #export not-available Expression n/a)
-  (def: #export not-applicable Expression n/a)
-  (def: #export no-answer Expression n/a)
-
-  (def: #export bool
-    (-> Bit Expression)
-    (|>> (case> #0 "FALSE"
-                #1 "TRUE")
-         self-contained))
-
-  (def: #export (int value)
-    (-> Int Expression)
-    (self-contained
-     (format "as.integer(" (%i value) ")")))
-
-  (def: #export float
-    (-> Frac Expression)
-    (|>> (cond> [(f/= number.positive-infinity)]
-                [(new> "1.0/0.0")]
-                
-                [(f/= number.negative-infinity)]
-                [(new> "-1.0/0.0")]
-                
-                [(f/= number.not-a-number)]
-                [(new> "0.0/0.0")]
-                
-                ## else
-                [%f])
-         self-contained))
-
-  (def: #export string
-    (-> Text Expression)
-    (|>> %t self-contained))
-
-  (def: (composite-literal left-delimiter right-delimiter entry-serializer)
-    (All [a] (-> Text Text (-> a Text)
-                 (-> (List a) Expression)))
-    (.function (_ entries)
-      (self-contained
-       (format left-delimiter
-               (|> entries (list/map entry-serializer) (text.join-with ","))
-               right-delimiter))))
-
-  (def: #export named-list
-    (-> (List [Text Expression]) Expression)
-    (composite-literal "list(" ")" (.function (_ [key value])
-                                     (format key "=" (:representation value)))))
-  
-  (template [<name> <function>]
-    [(def: #export <name>
-       (-> (List Expression) Expression)
-       (composite-literal (format <function> "(") ")" expression))]
-
-    [vector "c"]
-    [list   "list"]
-    )
-  
-  (def: #export (slice from to list)
-    (-> Expression Expression Expression Expression)
-    (self-contained
-     (format (:representation list)
-             "[" (:representation from) ":" (:representation to) "]")))
-
-  (def: #export (slice-from from list)
-    (-> Expression Expression Expression)
-    (self-contained
-     (format (:representation list)
-             "[-1"  ":-" (:representation from) "]")))
-
-  (def: #export (apply args func)
-    (-> (List Expression) Expression Expression)
-    (self-contained
-     (format (:representation func) "(" (text.join-with "," (list/map expression args)) ")")))
-
-  (def: #export (apply-kw args kw-args func)
-    (-> (List Expression) (List [Text Expression]) Expression Expression)
-    (self-contained
-     (format (:representation func)
-             (format "("
-                     (text.join-with "," (list/map expression args)) ","
-                     (text.join-with "," (list/map (.function (_ [key val])
-                                                     (format key "=" (expression val)))
-                                                   kw-args))
-                     ")"))))
-
-  (def: #export (nth idx list)
-    (-> Expression Expression Expression)
-    (self-contained
-     (format (:representation list) "[[" (:representation idx) "]]")))
-
-  (def: #export (if test then else)
-    (-> Expression Expression Expression Expression)
-    (self-contained
-     (format "if(" (:representation test) ")"
-             " " (.._block (:representation then))
-             " else " (.._block (:representation else)))))
-
-  (def: #export (when test then)
-    (-> Expression Expression Expression)
-    (self-contained
-     (format "if(" (:representation test) ") {"
-             (.._block (:representation then))
-             "\n" "}")))
-
-  (def: #export (cond clauses else)
-    (-> (List [Expression Expression]) Expression Expression)
-    (list/fold (.function (_ [test then] next)
-                 (if test then next))
-               else
-               (list.reverse clauses)))
-
-  (template [<name> <op>]
-    [(def: #export (<name> param subject)
-       (-> Expression Expression Expression)
-       (self-contained
-        (format (:representation subject)
-                " " <op> " "
-                (:representation param))))]
-
-    [=       "=="]
-    [<       "<"]
-    [<=      "<="]
-    [>       ">"]
-    [>=      ">="]
-    [+       "+"]
-    [-       "-"]
-    [*       "*"]
-    [/       "/"]
-    [%%      "%%"]
-    [**      "**"]
-    [or      "||"]
-    [and     "&&"]
-    )
-
-  (def: #export @@
-    (All [k] (-> (Var k) Expression))
-    (|>> ..name self-contained))
-
-  (def: #export global
-    (-> Text Expression)
-    (|>> var @@))
-
-  (template [<name> <func>]
-    [(def: #export (<name> param subject)
-       (-> Expression Expression Expression)
-       (..apply (.list subject param) (..global <func>)))]
-
-    [bit-or   "bitwOr"]
-    [bit-and  "bitwAnd"]
-    [bit-xor  "bitwXor"]
-    [bit-shl  "bitwShiftL"]
-    [bit-ushr "bitwShiftR"]
-    )
-
-  (def: #export (bit-not subject)
-    (-> Expression Expression)
-    (..apply (.list subject) (..global "bitwNot")))
-
-  (template [<name> <op>]
-    [(def: #export <name>
-       (-> Expression Expression)
-       (|>> :representation (format <op>) self-contained))]
-
-    [not    "!"]
-    [negate "-"]
-    )
-  
-  (def: #export (length list)
-    (-> Expression Expression)
-    (..apply (.list list) (..global "length")))
-
-  (def: #export (range from to)
-    (-> Expression Expression Expression)
-    (self-contained
-     (format (:representation from) ":" (:representation to))))
-
-  (def: #export (function inputs body)
-    (-> (List (Ex [k] (Var k))) Expression Expression)
-    (let [args (|> inputs (list/map ..name) (text.join-with ", "))]
-      (self-contained
-       (format "function(" args ") "
-               (.._block (:representation body))))))
-
-  (def: #export (try body warning error finally)
-    (-> Expression (Maybe Expression) (Maybe Expression) (Maybe Expression) Expression)
-    (let [optional (: (-> Text (Maybe Expression) (-> Text Text) Text)
-                      (.function (_ parameter value preparation)
-                        (|> value
-                            (maybe/map (|>> :representation preparation (format ", " parameter " = ")))
-                            (maybe.default ""))))]
-      (self-contained
-       (format "tryCatch("
-               (.._block (:representation body))
-               (optional "warning" warning id)
-               (optional "error" error id)
-               (optional "finally" finally .._block)
-               ")"))))
-
-  (def: #export (while test body)
-    (-> Expression Expression Expression)
-    (self-contained
-     (format "while (" (:representation test) ") "
-             (.._block (:representation body)))))
-
-  (def: #export (for-in var inputs body)
-    (-> SVar Expression Expression Expression)
-    (self-contained
-     (format "for (" (..name var) " in " (..expression inputs) ")"
-             (.._block (:representation body)))))
-
-  (template [<name> <keyword>]
-    [(def: #export (<name> message)
-       (-> Expression Expression)
-       (..apply (.list message) (..global <keyword>)))]
-
-    [stop  "stop"]
-    [print "print"]
-    )
-
-  (def: #export (set! var value)
-    (-> (Var Single) Expression Expression)
-    (self-contained
-     (format (..name var) " <- " (:representation value))))
-
-  (def: #export (set-nth! idx value list)
-    (-> Expression Expression SVar Expression)
-    (self-contained
-     (format (..name list) "[[" (:representation idx) "]] <- " (:representation value))))
-
-  (def: #export (then pre post)
-    (-> Expression Expression Expression)
-    (:abstraction
-     (format (:representation pre)
-             "\n"
-             (:representation post))))
-  )
diff --git a/lux-r/source/luxc/lang/translation/r.lux b/lux-r/source/luxc/lang/translation/r.lux
deleted file mode 100644
index a4a3db1f5..000000000
--- a/lux-r/source/luxc/lang/translation/r.lux
+++ /dev/null
@@ -1,216 +0,0 @@
-(.module:
-  lux
-  (lux (control ["ex" exception #+ exception:]
-                pipe
-                [monad #+ do])
-       (data [bit]
-             [maybe]
-             ["e" error #+ Error]
-             [text "text/" Eq<Text>]
-             text/format
-             (coll [array]))
-       [macro]
-       [io #+ IO Process io]
-       [host #+ class: interface: object]
-       (world [file #+ File]))
-  (luxc [lang]
-        (lang [".L" variable #+ Register]
-              (host [r #+ Expression]))
-        [".C" io]))
-
-(template [<name>]
-  [(exception: #export (<name> {message Text})
-     message)]
-
-  [No-Active-Module-Buffer]
-  [Cannot-Execute]
-
-  [No-Anchor]
-  )
-
-(host.import: java/lang/Object)
-
-(host.import: java/lang/String
-  (getBytes [String] #try [byte]))
-
-(host.import: java/lang/CharSequence)
-
-(host.import: java/lang/Appendable
-  (append [CharSequence] Appendable))
-
-(host.import: java/lang/StringBuilder
-  (new [])
-  (toString [] String))
-
-(host.import: javax/script/ScriptEngine
-  (eval [String] #try #? Object))
-
-(host.import: javax/script/ScriptEngineFactory
-  (getScriptEngine [] ScriptEngine))
-
-(type: #export Anchor [Text Register])
-
-(type: #export Host
-  {#context [Text Nat]
-   #anchor (Maybe Anchor)
-   #loader (-> Expression (Error Any))
-   #interpreter (-> Expression (Error Object))
-   #module-buffer (Maybe StringBuilder)
-   #program-buffer StringBuilder})
-
-(def: #export init
-  (IO Host)
-  (io (let [interpreter (|> (undefined)
-                            (ScriptEngineFactory::getScriptEngine []))]
-        {#context ["" +0]
-         #anchor #.None
-         #loader (function (_ code)
-                   (do e.Monad<Error>
-                     [_ (ScriptEngine::eval [(r.expression code)] interpreter)]
-                     (wrap [])))
-         #interpreter (function (_ code)
-                        (do e.Monad<Error>
-                          [output (ScriptEngine::eval [(r.expression code)] interpreter)]
-                          (wrap (maybe.default (:coerce Object [])
-                                               output))))
-         #module-buffer #.None
-         #program-buffer (StringBuilder::new [])})))
-
-(def: #export r-module-name Text "module.r")
-
-(def: #export init-module-buffer
-  (Meta Any)
-  (function (_ compiler)
-    (#e.Success [(update@ #.host
-                          (|>> (:coerce Host)
-                               (set@ #module-buffer (#.Some (StringBuilder::new [])))
-                               (:coerce Nothing))
-                          compiler)
-                 []])))
-
-(def: #export (with-sub-context expr)
-  (All [a] (-> (Meta a) (Meta [Text a])))
-  (function (_ compiler)
-    (let [old (:coerce Host (get@ #.host compiler))
-          [old-name old-sub] (get@ #context old)
-          new-name (format old-name "f___" (%i (.int old-sub)))]
-      (case (expr (set@ #.host
-                        (:coerce Nothing (set@ #context [new-name +0] old))
-                        compiler))
-        (#e.Success [compiler' output])
-        (#e.Success [(update@ #.host
-                              (|>> (:coerce Host)
-                                   (set@ #context [old-name (inc old-sub)])
-                                   (:coerce Nothing))
-                              compiler')
-                     [new-name output]])
-
-        (#e.Error error)
-        (#e.Error error)))))
-
-(def: #export context
-  (Meta Text)
-  (function (_ compiler)
-    (#e.Success [compiler
-                 (|> (get@ #.host compiler)
-                     (:coerce Host)
-                     (get@ #context)
-                     (let> [name sub]
-                           name))])))
-
-(def: #export (with-anchor anchor expr)
-  (All [a] (-> Anchor (Meta a) (Meta a)))
-  (function (_ compiler)
-    (let [old (:coerce Host (get@ #.host compiler))]
-      (case (expr (set@ #.host
-                        (:coerce Nothing (set@ #anchor (#.Some anchor) old))
-                        compiler))
-        (#e.Success [compiler' output])
-        (#e.Success [(update@ #.host
-                              (|>> (:coerce Host)
-                                   (set@ #anchor (get@ #anchor old))
-                                   (:coerce Nothing))
-                              compiler')
-                     output])
-
-        (#e.Error error)
-        (#e.Error error)))))
-
-(def: #export anchor
-  (Meta Anchor)
-  (function (_ compiler)
-    (case (|> compiler (get@ #.host) (:coerce Host) (get@ #anchor))
-      (#.Some anchor)
-      (#e.Success [compiler anchor])
-
-      #.None
-      ((lang.throw No-Anchor "") compiler))))
-
-(def: #export module-buffer
-  (Meta StringBuilder)
-  (function (_ compiler)
-    (case (|> compiler (get@ #.host) (:coerce Host) (get@ #module-buffer))
-      #.None
-      ((lang.throw No-Active-Module-Buffer "") compiler)
-      
-      (#.Some module-buffer)
-      (#e.Success [compiler module-buffer]))))
-
-(def: #export program-buffer
-  (Meta StringBuilder)
-  (function (_ compiler)
-    (#e.Success [compiler (|> compiler (get@ #.host) (:coerce Host) (get@ #program-buffer))])))
-
-(template [<name> <field> <outputT>]
-  [(def: (<name> code)
-     (-> Expression (Meta <outputT>))
-     (function (_ compiler)
-       (let [runner (|> compiler (get@ #.host) (:coerce Host) (get@ <field>))]
-         (case (runner code)
-           (#e.Error error)
-           ((lang.throw Cannot-Execute error) compiler)
-           
-           (#e.Success output)
-           (#e.Success [compiler output])))))]
-
-  [load!     #loader      Any]
-  [interpret #interpreter Object]
-  )
-
-(def: #export variant-tag-field "luxVT")
-(def: #export variant-flag-field "luxVF")
-(def: #export variant-value-field "luxVV")
-
-(def: #export int-high-field "luxIH")
-(def: #export int-low-field "luxIL")
-
-(def: #export unit Text "")
-
-(def: #export (definition-name [module name])
-  (-> Name Text)
-  (lang.normalize-name (format module "$" name)))
-
-(def: #export (save code)
-  (-> Expression (Meta Any))
-  (do macro.Monad<Meta>
-    [module-buffer module-buffer
-     #let [_ (Appendable::append [(:coerce CharSequence (r.expression code))]
-                                 module-buffer)]]
-    (load! code)))
-
-(def: #export run interpret)
-
-(def: #export (save-module! target)
-  (-> File (Meta (Process Any)))
-  (do macro.Monad<Meta>
-    [module macro.current-module-name
-     module-buffer module-buffer
-     program-buffer program-buffer
-     #let [module-code (StringBuilder::toString [] module-buffer)
-           _ (Appendable::append [(:coerce CharSequence (format module-code "\n"))]
-                                 program-buffer)]]
-    (wrap (ioC.write target
-                     (format (lang.normalize-name module) "/" r-module-name)
-                     (|> module-code
-                         (String::getBytes ["UTF-8"])
-                         e.assume)))))
diff --git a/lux-r/source/luxc/lang/translation/r/case.jvm.lux b/lux-r/source/luxc/lang/translation/r/case.jvm.lux
deleted file mode 100644
index 42460b620..000000000
--- a/lux-r/source/luxc/lang/translation/r/case.jvm.lux
+++ /dev/null
@@ -1,195 +0,0 @@
-(.module:
-  lux
-  (lux (control [monad #+ do]
-                ["ex" exception #+ exception:])
-       (data [number]
-             [text]
-             text/format
-             (coll [list "list/" Functor<List> Fold<List>]
-                   (set ["set" unordered #+ Set])))
-       [macro #+ "meta/" Monad<Meta>]
-       (macro [code]))
-  (luxc [lang]
-        (lang [".L" variable #+ Register Variable]
-              ["ls" synthesis #+ Synthesis Path]
-              (host [r #+ Expression SVar @@])))
-  [//]
-  (// [".T" runtime]
-      [".T" primitive]
-      [".T" reference]))
-
-(def: #export (translate-let translate register valueS bodyS)
-  (-> (-> Synthesis (Meta Expression)) Register Synthesis Synthesis
-      (Meta Expression))
-  (do macro.Monad<Meta>
-    [valueO (translate valueS)
-     bodyO (translate bodyS)
-     #let [$register (referenceT.variable register)]]
-    (wrap (r.block
-           ($_ r.then
-               (r.set! $register valueO)
-               bodyO)))))
-
-(def: #export (translate-record-get translate valueS pathP)
-  (-> (-> Synthesis (Meta Expression)) Synthesis (List [Nat Bit])
-      (Meta Expression))
-  (do macro.Monad<Meta>
-    [valueO (translate valueS)]
-    (wrap (list/fold (function (_ [idx tail?] source)
-                       (let [method (if tail?
-                                      runtimeT.product//right
-                                      runtimeT.product//left)]
-                         (method source (r.int (:coerce Int idx)))))
-                     valueO
-                     pathP))))
-
-(def: #export (translate-if testO thenO elseO)
-  (-> Expression Expression Expression Expression)
-  (r.if testO thenO elseO))
-
-(def: $savepoint (r.var "lux_pm_cursor_savepoint"))
-(def: $cursor (r.var "lux_pm_cursor"))
-
-(def: top r.length)
-(def: next (|>> r.length (r.+ (r.int 1))))
-(def: (push! value var)
-  (-> Expression SVar Expression)
-  (r.set-nth! (next (@@ var)) value var))
-(def: (pop! var)
-  (-> SVar Expression)
-  (r.set-nth! (top (@@ var)) r.null var))
-
-(def: (push-cursor! value)
-  (-> Expression Expression)
-  (push! value $cursor))
-
-(def: save-cursor!
-  Expression
-  (push! (r.slice (r.float 1.0) (r.length (@@ $cursor)) (@@ $cursor))
-         $savepoint))
-
-(def: restore-cursor!
-  Expression
-  (r.set! $cursor (r.nth (top (@@ $savepoint)) (@@ $savepoint))))
-
-(def: cursor-top
-  Expression
-  (|> (@@ $cursor) (r.nth (top (@@ $cursor)))))
-
-(def: pop-cursor!
-  Expression
-  (pop! $cursor))
-
-(def: pm-error (r.string "PM-ERROR"))
-
-(def: fail-pm! (r.stop pm-error))
-
-(def: $temp (r.var "lux_pm_temp"))
-
-(exception: #export (Unrecognized-Path {message Text})
-  message)
-
-(def: $alt_error (r.var "alt_error"))
-
-(def: (pm-catch handler)
-  (-> Expression Expression)
-  (r.function (list $alt_error)
-    (r.if (|> (@@ $alt_error) (r.= pm-error))
-      handler
-      (r.stop (@@ $alt_error)))))
-
-(def: (translate-pattern-matching' translate pathP)
-  (-> (-> Synthesis (Meta Expression)) Path (Meta Expression))
-  (case pathP
-    (^code ("lux case exec" (~ bodyS)))
-    (do macro.Monad<Meta>
-      [bodyO (translate bodyS)]
-      (wrap bodyO))
-
-    (^code ("lux case pop"))
-    (meta/wrap pop-cursor!)
-
-    (^code ("lux case bind" (~ [_ (#.Nat register)])))
-    (meta/wrap (r.set! (referenceT.variable register) cursor-top))
-
-    (^template [<tag> <format>]
-      [_ (<tag> value)]
-      (meta/wrap (r.when (r.not (r.= (|> value <format>) cursor-top))
-                         fail-pm!)))
-    ([#.Bit  r.bool]
-     [#.Frac r.float]
-     [#.Text r.string])
-
-    (^template [<tag> <format>]
-      [_ (<tag> value)]
-      (meta/wrap (r.when (r.not (runtimeT.int//= (|> value <format>) cursor-top))
-                         fail-pm!)))
-    ([#.Nat  (<| runtimeT.int (:coerce Int))]
-     [#.Int  runtimeT.int]
-     [#.Rev  (<| runtimeT.int (:coerce Int))])
-
-    (^template [<pm> <getter>]
-      (^code (<pm> (~ [_ (#.Nat idx)])))
-      (meta/wrap (push-cursor! (<getter> cursor-top (r.int (:coerce Int idx))))))
-    (["lux case tuple left" runtimeT.product//left]
-     ["lux case tuple right" runtimeT.product//right])
-
-    (^template [<pm> <flag>]
-      (^code (<pm> (~ [_ (#.Nat idx)])))
-      (meta/wrap ($_ r.then
-                     (r.set! $temp (runtimeT.sum//get cursor-top (r.int (:coerce Int idx)) <flag>))
-                     (r.if (r.= r.null (@@ $temp))
-                       fail-pm!
-                       (push-cursor! (@@ $temp))))))
-    (["lux case variant left" r.null]
-     ["lux case variant right" (r.string "")])
-
-    (^code ("lux case seq" (~ leftP) (~ rightP)))
-    (do macro.Monad<Meta>
-      [leftO (translate-pattern-matching' translate leftP)
-       rightO (translate-pattern-matching' translate rightP)]
-      (wrap ($_ r.then
-                leftO
-                rightO)))
-
-    (^code ("lux case alt" (~ leftP) (~ rightP)))
-    (do macro.Monad<Meta>
-      [leftO (translate-pattern-matching' translate leftP)
-       rightO (translate-pattern-matching' translate rightP)]
-      (wrap (r.try ($_ r.then
-                       save-cursor!
-                       leftO)
-                   #.None
-                   (#.Some (pm-catch ($_ r.then
-                                         restore-cursor!
-                                         rightO)))
-                   #.None)))
-
-    _
-    (lang.throw Unrecognized-Path (%code pathP))
-    ))
-
-(def: (translate-pattern-matching translate pathP)
-  (-> (-> Synthesis (Meta Expression)) Path (Meta Expression))
-  (do macro.Monad<Meta>
-    [pattern-matching! (translate-pattern-matching' translate pathP)]
-    (wrap (r.try pattern-matching!
-                 #.None
-                 (#.Some (pm-catch (r.stop (r.string "Invalid expression for pattern-matching."))))
-                 #.None))))
-
-(def: (initialize-pattern-matching! stack-init)
-  (-> Expression Expression)
-  ($_ r.then
-      (r.set! $cursor (r.list (list stack-init)))
-      (r.set! $savepoint (r.list (list)))))
-
-(def: #export (translate-case translate valueS pathP)
-  (-> (-> Synthesis (Meta Expression)) Synthesis Path (Meta Expression))
-  (do macro.Monad<Meta>
-    [valueO (translate valueS)
-     pattern-matching! (translate-pattern-matching translate pathP)]
-    (wrap (r.block
-           ($_ r.then
-               (initialize-pattern-matching! valueO)
-               pattern-matching!)))))
diff --git a/lux-r/source/luxc/lang/translation/r/expression.jvm.lux b/lux-r/source/luxc/lang/translation/r/expression.jvm.lux
deleted file mode 100644
index 3c41fbe63..000000000
--- a/lux-r/source/luxc/lang/translation/r/expression.jvm.lux
+++ /dev/null
@@ -1,88 +0,0 @@
-(.module:
-  lux
-  (lux (control [monad #+ do]
-                ["ex" exception #+ exception:]
-                ["p" parser])
-       (data ["e" error]
-             text/format)
-       [macro]
-       (macro ["s" syntax]))
-  (luxc ["&" lang]
-        (lang [".L" variable #+ Variable Register]
-              [".L" extension]
-              ["ls" synthesis]
-              (host [r #+ Expression])))
-  [//]
-  (// [".T" runtime]
-      [".T" primitive]
-      [".T" structure]
-      [".T" reference]
-      [".T" function]
-      [".T" case]
-      [".T" procedure])
-  )
-
-(template [<name>]
-  [(exception: #export (<name> {message Text})
-     message)]
-
-  [Invalid-Function-Syntax]
-  [Unrecognized-Synthesis]
-  )
-
-(def: #export (translate synthesis)
-  (-> ls.Synthesis (Meta Expression))
-  (case synthesis
-    (^code [])
-    (:: macro.Monad<Meta> wrap runtimeT.unit)
-
-    (^template [<tag> <generator>]
-      [_ (<tag> value)]
-      (<generator> value))
-    ([#.Bit primitiveT.translate-bit]
-     [#.Nat  primitiveT.translate-nat]
-     [#.Int  primitiveT.translate-int]
-     [#.Rev  primitiveT.translate-rev]
-     [#.Frac primitiveT.translate-frac]
-     [#.Text primitiveT.translate-text])
-
-    (^code ((~ [_ (#.Nat tag)]) (~ [_ (#.Bit last?)]) (~ valueS)))
-    (structureT.translate-variant translate tag last? valueS)
-
-    (^code [(~ singleton)])
-    (translate singleton)
-
-    (^code [(~+ members)])
-    (structureT.translate-tuple translate members)
-
-    (^ [_ (#.Form (list [_ (#.Int var)]))])
-    (referenceT.translate-variable var)
-
-    [_ (#.Identifier definition)]
-    (referenceT.translate-definition definition)
-
-    (^code ("lux let" (~ [_ (#.Nat register)]) (~ inputS) (~ exprS)))
-    (caseT.translate-let translate register inputS exprS)
-
-    (^code ("lux case" (~ inputS) (~ pathPS)))
-    (caseT.translate-case translate inputS pathPS)
-
-    (^code ("lux function" (~ [_ (#.Nat arity)]) [(~+ environment)] (~ bodyS)))
-    (case (s.run environment (p.some s.int))
-      (#e.Success environment)
-      (functionT.translate-function translate environment arity bodyS)
-
-      _
-      (&.throw Invalid-Function-Syntax (%code synthesis)))
-
-    (^code ("lux call" (~ functionS) (~+ argsS)))
-    (functionT.translate-apply translate functionS argsS)
-
-    (^code ((~ [_ (#.Text procedure)]) (~+ argsS)))
-    (procedureT.translate-procedure translate procedure argsS)
-    ## (do macro.Monad<Meta>
-    ##   [translation (extensionL.find-translation procedure)]
-    ##   (translation argsS))
-
-    _
-    (&.throw Unrecognized-Synthesis (%code synthesis))))
diff --git a/lux-r/source/luxc/lang/translation/r/function.jvm.lux b/lux-r/source/luxc/lang/translation/r/function.jvm.lux
deleted file mode 100644
index f39a5e1a2..000000000
--- a/lux-r/source/luxc/lang/translation/r/function.jvm.lux
+++ /dev/null
@@ -1,94 +0,0 @@
-(.module:
-  lux
-  (lux (control [monad #+ do]
-                pipe)
-       (data [product]
-             [text]
-             text/format
-             (coll [list "list/" Functor<List> Fold<List>]))
-       [macro])
-  (luxc ["&" lang]
-        (lang ["ls" synthesis]
-              [".L" variable #+ Variable]
-              (host [r #+ Expression @@])))
-  [//]
-  (// [".T" reference]))
-
-(def: #export (translate-apply translate functionS argsS+)
-  (-> (-> ls.Synthesis (Meta Expression)) ls.Synthesis (List ls.Synthesis) (Meta Expression))
-  (do {@ macro.Monad<Meta>}
-    [functionO (translate functionS)
-     argsO+ (monad.map @ translate argsS+)]
-    (wrap (r.apply argsO+ functionO))))
-
-(def: $curried (r.var "curried"))
-
-(def: (input-declaration register)
-  (r.set! (referenceT.variable (inc register))
-          (|> (@@ $curried) (r.nth (|> register inc .int r.int)))))
-
-(def: (with-closure function-name inits function-definition)
-  (-> Text (List Expression) Expression (Meta Expression))
-  (let [$closure (r.var (format function-name "___CLOSURE"))]
-    (case inits
-      #.Nil
-      (do macro.Monad<Meta>
-        [_ (//.save function-definition)]
-        (wrap (r.global function-name)))
-
-      _
-      (do macro.Monad<Meta>
-        [_ (//.save (r.set! $closure
-                            (r.function (|> (list.enumerate inits)
-                                            (list/map (|>> product.left referenceT.closure)))
-                              ($_ r.then
-                                  function-definition
-                                  (r.global function-name)))))]
-        (wrap (r.apply inits (@@ $closure)))))))
-
-(def: #export (translate-function translate env arity bodyS)
-  (-> (-> ls.Synthesis (Meta Expression))
-      (List Variable) ls.Arity ls.Synthesis
-      (Meta Expression))
-  (do {@ macro.Monad<Meta>}
-    [[function-name bodyO] (//.with-sub-context
-                             (do @
-                               [function-name //.context]
-                               (//.with-anchor [function-name +1]
-                                 (translate bodyS))))
-     closureO+ (monad.map @ referenceT.translate-variable env)
-     #let [arityO (|> arity .int r.int)
-           $num_args (r.var "num_args")
-           $function (r.var function-name)
-           var-args (r.code (format "list" (r.expression (@@ r.var-args))))
-           apply-poly (function (_ args func)
-                        (r.apply (list func args) (r.global "do.call")))]]
-    (with-closure function-name closureO+
-      (r.set! $function
-              (r.function (list r.var-args)
-                ($_ r.then
-                    (r.set! $curried var-args)
-                    (r.set! $num_args (r.length (@@ $curried)))
-                    (r.cond (list [(|> (@@ $num_args) (r.= arityO))
-                                   ($_ r.then
-                                       (r.set! (referenceT.variable +0) (@@ $function))
-                                       (|> (list.n/range +0 (dec arity))
-                                           (list/map input-declaration)
-                                           (list/fold r.then bodyO)))]
-                                  [(|> (@@ $num_args) (r.> arityO))
-                                   (let [arity-args (r.slice (r.int 1) arityO (@@ $curried))
-                                         output-func-args (r.slice (|> arityO (r.+ (r.int 1)))
-                                                                   (@@ $num_args)
-                                                                   (@@ $curried))]
-                                     (|> (@@ $function)
-                                         (apply-poly arity-args)
-                                         (apply-poly output-func-args)))])
-                            ## (|> (@@ $num_args) (r.< arityO))
-                            (let [$missing (r.var "missing")]
-                              (r.function (list r.var-args)
-                                ($_ r.then
-                                    (r.set! $missing var-args)
-                                    (|> (@@ $function)
-                                        (apply-poly (r.apply (list (@@ $curried) (@@ $missing))
-                                                             (r.global "append"))))))))))))
-    ))
diff --git a/lux-r/source/luxc/lang/translation/r/loop.jvm.lux b/lux-r/source/luxc/lang/translation/r/loop.jvm.lux
deleted file mode 100644
index f1197e5ce..000000000
--- a/lux-r/source/luxc/lang/translation/r/loop.jvm.lux
+++ /dev/null
@@ -1,37 +0,0 @@
-(.module:
-  lux
-  (lux (control [monad #+ do])
-       (data [text]
-             text/format
-             (coll [list "list/" Functor<List>]))
-       [macro])
-  (luxc [lang]
-        (lang ["ls" synthesis]
-              (host [r #+ Expression @@])))
-  [//]
-  (// [".T" reference]))
-
-(def: #export (translate-loop translate offset initsS+ bodyS)
-  (-> (-> ls.Synthesis (Meta Expression)) Nat (List ls.Synthesis) ls.Synthesis
-      (Meta Expression))
-  (do {@ macro.Monad<Meta>}
-    [loop-name (|> (macro.gensym "loop")
-                   (:: @ map (|>> %code lang.normalize-name)))
-     initsO+ (monad.map @ translate initsS+)
-     bodyO (//.with-anchor [loop-name offset]
-             (translate bodyS))
-     #let [$loop-name (r.var loop-name)
-           @loop-name (@@ $loop-name)]
-     _ (//.save (r.set! $loop-name
-                        (r.function (|> (list.n/range +0 (dec (list.size initsS+)))
-                                        (list/map (|>> (n/+ offset) referenceT.variable)))
-                          bodyO)))]
-    (wrap (r.apply initsO+ @loop-name))))
-
-(def: #export (translate-recur translate argsS+)
-  (-> (-> ls.Synthesis (Meta Expression)) (List ls.Synthesis)
-      (Meta Expression))
-  (do {@ macro.Monad<Meta>}
-    [[loop-name offset] //.anchor
-     argsO+ (monad.map @ translate argsS+)]
-    (wrap (r.apply argsO+ (r.global loop-name)))))
diff --git a/lux-r/source/luxc/lang/translation/r/primitive.jvm.lux b/lux-r/source/luxc/lang/translation/r/primitive.jvm.lux
deleted file mode 100644
index 8bc7da848..000000000
--- a/lux-r/source/luxc/lang/translation/r/primitive.jvm.lux
+++ /dev/null
@@ -1,22 +0,0 @@
-(.module:
-  lux
-  (lux [macro "meta/" Monad<Meta>])
-  (luxc (lang (host [r #+ Expression])))
-  [//]
-  (// [".T" runtime]))
-
-(def: #export translate-bit
-  (-> Bit (Meta Expression))
-  (|>> r.bool meta/wrap))
-
-(def: #export translate-int
-  (-> Int (Meta Expression))
-  (|>> runtimeT.int meta/wrap))
-
-(def: #export translate-frac
-  (-> Frac (Meta Expression))
-  (|>> r.float meta/wrap))
-
-(def: #export translate-text
-  (-> Text (Meta Expression))
-  (|>> r.string meta/wrap))
diff --git a/lux-r/source/luxc/lang/translation/r/reference.jvm.lux b/lux-r/source/luxc/lang/translation/r/reference.jvm.lux
deleted file mode 100644
index 7de1c74ee..000000000
--- a/lux-r/source/luxc/lang/translation/r/reference.jvm.lux
+++ /dev/null
@@ -1,42 +0,0 @@
-(.module:
-  lux
-  (lux [macro]
-       (data [text]
-             text/format))
-  (luxc ["&" lang]
-        (lang [".L" variable #+ Variable Register]
-              (host [r #+ Expression SVar @@])))
-  [//]
-  (// [".T" runtime]))
-
-(template [<register> <translation> <prefix>]
-  [(def: #export (<register> register)
-     (-> Register SVar)
-     (r.var (format <prefix> (%i (.int register)))))
-   
-   (def: #export (<translation> register)
-     (-> Register (Meta Expression))
-     (:: macro.Monad<Meta> wrap (@@ (<register> register))))]
-
-  [closure  translate-captured "c"]
-  [variable translate-local    "v"])
-
-(def: #export (local var)
-  (-> Variable SVar)
-  (if (variableL.captured? var)
-    (closure (variableL.captured-register var))
-    (variable (.nat var))))
-
-(def: #export (translate-variable var)
-  (-> Variable (Meta Expression))
-  (if (variableL.captured? var)
-    (translate-captured (variableL.captured-register var))
-    (translate-local (.nat var))))
-
-(def: #export global
-  (-> Name SVar)
-  (|>> //.definition-name r.var))
-
-(def: #export (translate-definition name)
-  (-> Name (Meta Expression))
-  (:: macro.Monad<Meta> wrap (@@ (global name))))
diff --git a/lux-r/source/luxc/lang/translation/r/runtime.jvm.lux b/lux-r/source/luxc/lang/translation/r/runtime.jvm.lux
deleted file mode 100644
index d641041d2..000000000
--- a/lux-r/source/luxc/lang/translation/r/runtime.jvm.lux
+++ /dev/null
@@ -1,802 +0,0 @@
-(.module:
-  lux
-  (lux (control ["p" parser "p/" Monad<Parser>]
-                [monad #+ do])
-       (data [bit]
-             [number (#+ hex) ("int/" Interval<Int>)]
-             text/format
-             (coll [list "list/" Monad<List>]))
-       [macro]
-       (macro [code]
-              ["s" syntax #+ syntax:])
-       [io #+ Process])
-  [//]
-  (luxc [lang]
-        (lang (host [r #+ SVar Expression @@]))))
-
-(def: prefix Text "LuxRuntime")
-
-(def: #export unit Expression (r.string //.unit))
-
-(def: full-32 (hex "+FFFFFFFF"))
-(def: half-32 (hex "+7FFFFFFF"))
-(def: post-32 (hex "+100000000"))
-
-(def: (cap-32 input)
-  (-> Nat Int)
-  (cond (n/> full-32 input)
-        (|> input (bit.and full-32) cap-32)
-        
-        (n/> half-32 input)
-        (|> post-32 (n/- input) .int (i/* -1))
-        
-        ## else
-        (.int input)))
-
-(def: high-32 (bit.logical-right-shift +32))
-(def: low-32 (|>> (bit.and (hex "+FFFFFFFF"))))
-
-(def: #export (int value)
-  (-> Int Expression)
-  (let [value (.nat value)
-        high (|> value ..high-32 cap-32)
-        low (|> value ..low-32 cap-32)]
-    (r.named-list (list [//.int-high-field (r.int high)]
-                        [//.int-low-field (r.int low)]))))
-
-(def: (flag value)
-  (-> Bit Expression)
-  (if value
-    (r.string "")
-    r.null))
-
-(def: (variant' tag last? value)
-  (-> Expression Expression Expression Expression)
-  (r.named-list (list [//.variant-tag-field tag]
-                      [//.variant-flag-field last?]
-                      [//.variant-value-field value])))
-
-(def: #export (variant tag last? value)
-  (-> Nat Bit Expression Expression)
-  (variant' (r.int (.int tag))
-            (flag last?)
-            value))
-
-(def: #export none
-  Expression
-  (variant +0 #0 unit))
-
-(def: #export some
-  (-> Expression Expression)
-  (variant +1 #1))
-
-(def: #export left
-  (-> Expression Expression)
-  (variant +0 #0))
-
-(def: #export right
-  (-> Expression Expression)
-  (variant +1 #1))
-
-(type: Runtime Expression)
-
-(def: declaration
-  (s.Syntax [Text (List Text)])
-  (p.either (p.seq s.local-identifier (p/wrap (list)))
-            (s.form (p.seq s.local-identifier (p.some s.local-identifier)))))
-
-(syntax: (runtime: {[name args] declaration}
-           definition)
-  (let [implementation (code.local-identifier (format "@@" name))
-        runtime (format prefix "__" (lang.normalize-name name))
-        $runtime (` (r.var (~ (code.text runtime))))
-        @runtime (` (@@ (~ $runtime)))
-        argsC+ (list/map code.local-identifier args)
-        argsLC+ (list/map (|>> lang.normalize-name (format "LRV__") code.text (~) (r.var) (`))
-                          args)
-        declaration (` ((~ (code.local-identifier name))
-                        (~+ argsC+)))
-        type (` (-> (~+ (list.repeat (list.size argsC+) (` r.Expression)))
-                    r.Expression))]
-    (wrap (list (` (def: (~' #export) (~ declaration)
-                     (~ type)
-                     (~ (case argsC+
-                          #.Nil
-                          @runtime
-
-                          _
-                          (` (r.apply (list (~+ argsC+)) (~ @runtime)))))))
-                (` (def: (~ implementation)
-                     r.Expression
-                     (~ (case argsC+
-                          #.Nil
-                          (` (r.set! (~ $runtime) (~ definition)))
-
-                          _
-                          (` (let [(~+ (|> (list.zip2 argsC+ argsLC+)
-                                           (list/map (function (_ [left right])
-                                                       (list left right)))
-                                           list/join))]
-                               (r.set! (~ $runtime)
-                                       (r.function (list (~+ argsLC+))
-                                         (~ definition)))))))))))))
-
-(syntax: #export (with-vars {vars (s.tuple (p.many s.local-identifier))}
-                   body)
-  (wrap (list (` (let [(~+ (|> vars
-                               (list/map (function (_ var)
-                                           (list (code.local-identifier var)
-                                                 (` (r.var (~ (code.text (format "LRV__" (lang.normalize-name var)))))))))
-                               list/join))]
-                   (~ body))))))
-
-(def: high-shift (r.bit-shl (r.int 32)))
-
-(runtime: f2^32 (|> (r.int 2) (r.** (r.int 32))))
-(runtime: f2^63 (|> (r.int 2) (r.** (r.int 63))))
-
-(def: (as-double value)
-  (-> Expression Expression)
-  (r.apply (list value) (r.global "as.double")))
-
-(def: (as-integer value)
-  (-> Expression Expression)
-  (r.apply (list value) (r.global "as.integer")))
-
-(runtime: (int//unsigned-low input)
-  (with-vars [low]
-    ($_ r.then
-        (r.set! low (|> (@@ input) (r.nth (r.string //.int-low-field))))
-        (r.if (|> (@@ low) (r.>= (r.int 0)))
-          (@@ low)
-          (|> (@@ low) (r.+ f2^32))))))
-
-(runtime: (int//to-float input)
-  (let [high (|> (@@ input)
-                 (r.nth (r.string //.int-high-field))
-                 high-shift)
-        low (|> (@@ input)
-                int//unsigned-low)]
-    (|> high (r.+ low) as-double)))
-
-(runtime: (int//new high low)
-  (r.named-list (list [//.int-high-field (as-integer (@@ high))]
-                      [//.int-low-field (as-integer (@@ low))])))
-
-(template [<name> <value>]
-  [(runtime: <name>
-     (..int <value>))]
-
-  [int//zero 0]
-  [int//one 1]
-  [int//min int/bottom]
-  [int//max int/top]
-  )
-
-(def: #export int64-high (r.nth (r.string //.int-high-field)))
-(def: #export int64-low (r.nth (r.string //.int-low-field)))
-
-(runtime: (bit//not input)
-  (int//new (|> (@@ input) int64-high r.bit-not)
-            (|> (@@ input) int64-low r.bit-not)))
-
-(runtime: (int//+ param subject)
-  (with-vars [sH sL pH pL
-              x00 x16 x32 x48]
-    ($_ r.then
-        (r.set! sH (|> (@@ subject) int64-high))
-        (r.set! sL (|> (@@ subject) int64-low))
-        (r.set! pH (|> (@@ param) int64-high))
-        (r.set! pL (|> (@@ param) int64-low))
-        (let [bits16 (r.code "0xFFFF")
-              move-top-16 (r.bit-shl (r.int 16))
-              top-16 (r.bit-ushr (r.int 16))
-              bottom-16 (r.bit-and bits16)
-              split-16 (function (_ source)
-                         [(|> source top-16)
-                          (|> source bottom-16)])
-              split-int (function (_ high low)
-                          [(split-16 high)
-                           (split-16 low)])
-              
-              [[s48 s32] [s16 s00]] (split-int (@@ sH) (@@ sL))
-              [[p48 p32] [p16 p00]] (split-int (@@ pH) (@@ pL))
-              new-half (function (_ top bottom)
-                         (|> top bottom-16 move-top-16
-                             (r.bit-or (bottom-16 bottom))))]
-          ($_ r.then
-              (r.set! x00 (|> s00 (r.+ p00)))
-              (r.set! x16 (|> (@@ x00) top-16 (r.+ s16) (r.+ p16)))
-              (r.set! x32 (|> (@@ x16) top-16 (r.+ s32) (r.+ p32)))
-              (r.set! x48 (|> (@@ x32) top-16 (r.+ s48) (r.+ p48)))
-              (int//new (new-half (@@ x48) (@@ x32))
-                        (new-half (@@ x16) (@@ x00))))))))
-
-(runtime: (int//= reference sample)
-  (let [n/a? (function (_ value)
-               (r.apply (list value) (r.global "is.na")))
-        isTRUE? (function (_ value)
-                  (r.apply (list value) (r.global "isTRUE")))
-        comparison (: (-> (-> Expression Expression) Expression)
-                      (function (_ field)
-                        (|> (|> (field (@@ sample)) (r.= (field (@@ reference))))
-                            (r.or (|> (n/a? (field (@@ sample)))
-                                      (r.and (n/a? (field (@@ reference)))))))))]
-    (|> (comparison int64-high)
-        (r.and (comparison int64-low))
-        isTRUE?)))
-
-(runtime: (int//negate input)
-  (r.if (|> (@@ input) (int//= int//min))
-    int//min
-    (|> (@@ input) bit//not (int//+ int//one))))
-
-(runtime: int//-one
-  (int//negate int//one))
-
-(runtime: (int//- param subject)
-  (int//+ (int//negate (@@ param)) (@@ subject)))
-
-(runtime: (int//< reference sample)
-  (with-vars [r-? s-?]
-    ($_ r.then
-        (r.set! s-? (|> (@@ sample) int64-high (r.< (r.int 0))))
-        (r.set! r-? (|> (@@ reference) int64-high (r.< (r.int 0))))
-        (|> (|> (@@ s-?) (r.and (r.not (@@ r-?))))
-            (r.or (|> (r.not (@@ s-?)) (r.and (@@ r-?)) r.not))
-            (r.or (|> (@@ sample)
-                      (int//- (@@ reference))
-                      int64-high
-                      (r.< (r.int 0))))))))
-
-(runtime: (int//from-float input)
-  (r.cond (list [(r.apply (list (@@ input)) (r.global "is.nan"))
-                 int//zero]
-                [(|> (@@ input) (r.<= (r.negate f2^63)))
-                 int//min]
-                [(|> (@@ input) (r.+ (r.float 1.0)) (r.>= f2^63))
-                 int//max]
-                [(|> (@@ input) (r.< (r.float 0.0)))
-                 (|> (@@ input) r.negate int//from-float int//negate)])
-          (int//new (|> (@@ input) (r./ f2^32))
-                    (|> (@@ input) (r.%% f2^32)))))
-
-(runtime: (int//* param subject)
-  (with-vars [sH sL pH pL
-              x00 x16 x32 x48]
-    ($_ r.then
-        (r.set! sH (|> (@@ subject) int64-high))
-        (r.set! pH (|> (@@ param) int64-high))
-        (let [negative-subject? (|> (@@ sH) (r.< (r.int 0)))
-              negative-param? (|> (@@ pH) (r.< (r.int 0)))]
-          (r.cond (list [negative-subject?
-                         (r.if negative-param?
-                           (int//* (int//negate (@@ param))
-                                   (int//negate (@@ subject)))
-                           (int//negate (int//* (@@ param)
-                                                (int//negate (@@ subject)))))]
-
-                        [negative-param?
-                         (int//negate (int//* (int//negate (@@ param))
-                                              (@@ subject)))])
-                  ($_ r.then
-                      (r.set! sL (|> (@@ subject) int64-low))
-                      (r.set! pL (|> (@@ param) int64-low))
-                      (let [bits16 (r.code "0xFFFF")
-                            move-top-16 (r.bit-shl (r.int 16))
-                            top-16 (r.bit-ushr (r.int 16))
-                            bottom-16 (r.bit-and bits16)
-                            split-16 (function (_ source)
-                                       [(|> source top-16)
-                                        (|> source bottom-16)])
-                            split-int (function (_ high low)
-                                        [(split-16 high)
-                                         (split-16 low)])
-                            new-half (function (_ top bottom)
-                                       (|> top bottom-16 move-top-16
-                                           (r.bit-or (bottom-16 bottom))))
-                            x16-top (|> (@@ x16) top-16)
-                            x32-top (|> (@@ x32) top-16)]
-                        (with-vars [s48 s32 s16 s00
-                                    p48 p32 p16 p00]
-                          (let [[[_s48 _s32] [_s16 _s00]] (split-int (@@ sH) (@@ sL))
-                                [[_p48 _p32] [_p16 _p00]] (split-int (@@ pH) (@@ pL))
-                                set-subject-chunks! ($_ r.then (r.set! s48 _s48) (r.set! s32 _s32) (r.set! s16 _s16) (r.set! s00 _s00))
-                                set-param-chunks! ($_ r.then (r.set! p48 _p48) (r.set! p32 _p32) (r.set! p16 _p16) (r.set! p00 _p00))]
-                            ($_ r.then
-                                set-subject-chunks!
-                                set-param-chunks!
-                                (r.set! x00 (|> (@@ s00) (r.* (@@ p00))))
-                                (r.set! x16 (|> (@@ x00) top-16 (r.+ (|> (@@ s16) (r.* (@@ p00))))))
-                                (r.set! x32 x16-top)
-                                (r.set! x16 (|> (@@ x16) bottom-16 (r.+ (|> (@@ s00) (r.* (@@ p16))))))
-                                (r.set! x32 (|> (@@ x32) (r.+ x16-top) (r.+ (|> (@@ s32) (r.* (@@ p00))))))
-                                (r.set! x48 x32-top)
-                                (r.set! x32 (|> (@@ x32) bottom-16 (r.+ (|> (@@ s16) (r.* (@@ p16))))))
-                                (r.set! x48 (|> (@@ x48) (r.+ x32-top)))
-                                (r.set! x32 (|> (@@ x32) bottom-16 (r.+ (|> (@@ s00) (r.* (@@ p32))))))
-                                (r.set! x48 (|> (@@ x48) (r.+ x32-top)
-                                                (r.+ (|> (@@ s48) (r.* (@@ p00))))
-                                                (r.+ (|> (@@ s32) (r.* (@@ p16))))
-                                                (r.+ (|> (@@ s16) (r.* (@@ p32))))
-                                                (r.+ (|> (@@ s00) (r.* (@@ p48))))))
-                                (int//new (new-half (@@ x48) (@@ x32))
-                                          (new-half (@@ x16) (@@ x00))))))
-                        )))))))
-
-(def: (limit-shift! shift)
-  (-> SVar Expression)
-  (r.set! shift (|> (@@ shift) (r.bit-and (r.int 63)))))
-
-(def: (no-shift-clause shift input)
-  (-> SVar SVar [Expression Expression])
-  [(|> (@@ shift) (r.= (r.int 0)))
-   (@@ input)])
-
-(runtime: (bit//left-shift shift input)
-  ($_ r.then
-      (limit-shift! shift)
-      (r.cond (list (no-shift-clause shift input)
-                    [(|> (@@ shift) (r.< (r.int 32)))
-                     (let [mid (|> (int64-low (@@ input)) (r.bit-ushr (|> (r.int 32) (r.- (@@ shift)))))
-                           high (|> (int64-high (@@ input))
-                                    (r.bit-shl (@@ shift))
-                                    (r.bit-or mid))
-                           low (|> (int64-low (@@ input))
-                                   (r.bit-shl (@@ shift)))]
-                       (int//new high low))])
-              (let [high (|> (int64-high (@@ input))
-                             (r.bit-shl (|> (@@ shift) (r.- (r.int 32)))))]
-                (int//new high (r.int 0))))))
-
-(runtime: (bit//arithmetic-right-shift-32 shift input)
-  (let [top-bit (|> (@@ input) (r.bit-and (r.int (hex "80000000"))))]
-    (|> (@@ input)
-        (r.bit-ushr (@@ shift))
-        (r.bit-or top-bit))))
-
-(runtime: (bit//arithmetic-right-shift shift input)
-  ($_ r.then
-      (limit-shift! shift)
-      (r.cond (list (no-shift-clause shift input)
-                    [(|> (@@ shift) (r.< (r.int 32)))
-                     (let [mid (|> (int64-high (@@ input)) (r.bit-shl (|> (r.int 32) (r.- (@@ shift)))))
-                           high (|> (int64-high (@@ input))
-                                    (bit//arithmetic-right-shift-32 (@@ shift)))
-                           low (|> (int64-low (@@ input))
-                                   (r.bit-ushr (@@ shift))
-                                   (r.bit-or mid))]
-                       (int//new high low))])
-              (let [low (|> (int64-high (@@ input))
-                            (bit//arithmetic-right-shift-32 (|> (@@ shift) (r.- (r.int 32)))))
-                    high (r.if (|> (int64-high (@@ input)) (r.>= (r.int 0)))
-                           (r.int 0)
-                           (r.int -1))]
-                (int//new high low)))))
-
-(runtime: (int/// param subject)
-  (let [negative? (|>> (int//< int//zero))
-        valid-division-check [(|> (@@ param) (int//= int//zero))
-                              (r.stop (r.string "Cannot divide by zero!"))]
-        short-circuit-check [(|> (@@ subject) (int//= int//zero))
-                             int//zero]]
-    (r.cond (list valid-division-check
-                  short-circuit-check
-
-                  [(|> (@@ subject) (int//= int//min))
-                   (r.cond (list [(|> (|> (@@ param) (int//= int//one))
-                                      (r.or (|> (@@ param) (int//= int//-one))))
-                                  int//min]
-                                 [(|> (@@ param) (int//= int//min))
-                                  int//one])
-                           (with-vars [approximation]
-                             ($_ r.then
-                                 (r.set! approximation
-                                         (|> (@@ subject)
-                                             (bit//arithmetic-right-shift (r.int 1))
-                                             (int/// (@@ param))
-                                             (bit//left-shift (r.int 1))))
-                                 (r.if (|> (@@ approximation) (int//= int//zero))
-                                   (r.if (negative? (@@ param))
-                                     int//one
-                                     int//-one)
-                                   (let [remainder (int//- (int//* (@@ param) (@@ approximation))
-                                                           (@@ subject))]
-                                     (|> remainder
-                                         (int/// (@@ param))
-                                         (int//+ (@@ approximation))))))))]
-                  [(|> (@@ param) (int//= int//min))
-                   int//zero]
-
-                  [(negative? (@@ subject))
-                   (r.if (negative? (@@ param))
-                     (|> (int//negate (@@ subject))
-                         (int/// (int//negate (@@ param))))
-                     (|> (int//negate (@@ subject))
-                         (int/// (@@ param))
-                         int//negate))]
-
-                  [(negative? (@@ param))
-                   (|> (@@ param)
-                       int//negate
-                       (int/// (@@ subject))
-                       int//negate)])
-            (with-vars [result remainder approximate approximate-result log2 approximate-remainder]
-              ($_ r.then
-                  (r.set! result int//zero)
-                  (r.set! remainder (@@ subject))
-                  (r.while (|> (|> (@@ remainder) (int//< (@@ param)))
-                               (r.or (|> (@@ remainder) (int//= (@@ param)))))
-                           (let [calc-rough-estimate (r.apply (list (|> (int//to-float (@@ remainder)) (r./ (int//to-float (@@ param)))))
-                                                              (r.global "floor"))
-                                 calc-approximate-result (int//from-float (@@ approximate))
-                                 calc-approximate-remainder (|> (@@ approximate-result) (int//* (@@ param)))
-                                 delta (r.if (|> (r.float 48.0) (r.<= (@@ log2)))
-                                         (r.float 1.0)
-                                         (r.** (|> (@@ log2) (r.- (r.float 48.0)))
-                                               (r.float 2.0)))]
-                             ($_ r.then
-                                 (r.set! approximate (r.apply (list (r.float 1.0) calc-rough-estimate)
-                                                              (r.global "max")))
-                                 (r.set! log2 (let [log (function (_ input)
-                                                          (r.apply (list input) (r.global "log")))]
-                                                (r.apply (list (|> (log (r.int 2))
-                                                                   (r./ (log (@@ approximate)))))
-                                                         (r.global "ceil"))))
-                                 (r.set! approximate-result calc-approximate-result)
-                                 (r.set! approximate-remainder calc-approximate-remainder)
-                                 (r.while (|> (negative? (@@ approximate-remainder))
-                                              (r.or (|> (@@ approximate-remainder) (int//< (@@ remainder)))))
-                                          ($_ r.then
-                                              (r.set! approximate (|> delta (r.- (@@ approximate))))
-                                              (r.set! approximate-result calc-approximate-result)
-                                              (r.set! approximate-remainder calc-approximate-remainder)))
-                                 (r.set! result (|> (r.if (|> (@@ approximate-result) (int//= int//zero))
-                                                      int//one
-                                                      (@@ approximate-result))
-                                                    (int//+ (@@ result))))
-                                 (r.set! remainder (|> (@@ remainder) (int//- (@@ approximate-remainder)))))))
-                  (@@ result)))
-            )))
-
-(runtime: (int//% param subject)
-  (let [flat (|> (@@ subject) (int/// (@@ param)) (int//* (@@ param)))]
-    (|> (@@ subject) (int//- flat))))
-
-(def: runtime//int
-  Runtime
-  ($_ r.then
-      @@int//zero
-      @@int//one
-      @@int//min
-      @@int//max
-      @@int//=
-      @@int//<
-      @@int//+
-      @@int//-
-      @@int//negate
-      @@int//-one
-      @@int//unsigned-low
-      @@int//to-float
-      @@int//*
-      @@int///
-      @@int//%))
-
-(runtime: (lux//try op)
-  (with-vars [error value]
-    (r.try ($_ r.then
-               (r.set! value (r.apply (list ..unit) (@@ op)))
-               (..right (@@ value)))
-           #.None
-           (#.Some (r.function (list error)
-                     (..left (r.nth (r.string "message")
-                                    (@@ error)))))
-           #.None)))
-
-(runtime: (lux//program-args program-args)
-  (with-vars [inputs value]
-    ($_ r.then
-        (r.set! inputs ..none)
-        (<| (r.for-in value (@@ program-args))
-            (r.set! inputs (..some (r.list (list (@@ value) (@@ inputs))))))
-        (@@ inputs))))
-
-(def: runtime//lux
-  Runtime
-  ($_ r.then
-      @@lux//try
-      @@lux//program-args))
-
-(def: current-time-float
-  Expression
-  (let [raw-time (r.apply (list) (r.global "Sys.time"))]
-    (r.apply (list raw-time) (r.global "as.numeric"))))
-
-(runtime: (io//current-time! _)
-  (|> current-time-float
-      (r.* (r.float 1,000.0))
-      int//from-float))
-
-(def: runtime//io
-  Runtime
-  ($_ r.then
-      @@io//current-time!))
-
-(def: minimum-index-length
-  (-> SVar Expression)
-  (|>> @@ (r.+ (r.int 1))))
-
-(def: (product-element product index)
-  (-> Expression Expression Expression)
-  (|> product (r.nth (|> index (r.+ (r.int 1))))))
-
-(def: (product-tail product)
-  (-> SVar Expression)
-  (|> (@@ product) (r.nth (r.length (@@ product)))))
-
-(def: (updated-index min-length product)
-  (-> Expression Expression Expression)
-  (|> min-length (r.- (r.length product))))
-
-(runtime: (product//left product index)
-  (let [$index_min_length (r.var "index_min_length")]
-    ($_ r.then
-        (r.set! $index_min_length (minimum-index-length index))
-        (r.if (|> (r.length (@@ product)) (r.> (@@ $index_min_length)))
-          ## No need for recursion
-          (product-element (@@ product) (@@ index))
-          ## Needs recursion
-          (product//left (product-tail product)
-                         (updated-index (@@ $index_min_length) (@@ product)))))))
-
-(runtime: (product//right product index)
-  (let [$index_min_length (r.var "index_min_length")]
-    ($_ r.then
-        (r.set! $index_min_length (minimum-index-length index))
-        (r.cond (list [## Last element.
-                       (|> (r.length (@@ product)) (r.= (@@ $index_min_length)))
-                       (product-element (@@ product) (@@ index))]
-                      [## Needs recursion
-                       (|> (r.length (@@ product)) (r.< (@@ $index_min_length)))
-                       (product//right (product-tail product)
-                                       (updated-index (@@ $index_min_length) (@@ product)))])
-                ## Must slice
-                (|> (@@ product) (r.slice-from (@@ index)))))))
-
-(runtime: (sum//get sum wanted_tag wants_last)
-  (let [no-match r.null
-        sum-tag (|> (@@ sum) (r.nth (r.string //.variant-tag-field)))
-        sum-flag (|> (@@ sum) (r.nth (r.string //.variant-flag-field)))
-        sum-value (|> (@@ sum) (r.nth (r.string //.variant-value-field)))
-        is-last? (|> sum-flag (r.= (r.string "")))
-        test-recursion (r.if is-last?
-                         ## Must recurse.
-                         (sum//get sum-value
-                                   (|> (@@ wanted_tag) (r.- sum-tag))
-                                   (@@ wants_last))
-                         no-match)]
-    (r.cond (list [(r.= sum-tag (@@ wanted_tag))
-                   (r.if (r.= (@@ wants_last) sum-flag)
-                     sum-value
-                     test-recursion)]
-
-                  [(|> (@@ wanted_tag) (r.> sum-tag))
-                   test-recursion]
-
-                  [(|> (|> (@@ wants_last) (r.= (r.string "")))
-                       (r.and (|> (@@ wanted_tag) (r.< sum-tag))))
-                   (variant' (|> sum-tag (r.- (@@ wanted_tag))) sum-flag sum-value)])
-
-            no-match)))
-
-(def: runtime//adt
-  Runtime
-  ($_ r.then
-      @@product//left
-      @@product//right
-      @@sum//get
-      ))
-
-(template [<name> <op>]
-  [(runtime: (<name> mask input)
-     (int//new (<op> (int64-high (@@ mask))
-                     (int64-high (@@ input)))
-               (<op> (int64-low (@@ mask))
-                     (int64-low (@@ input)))))]
-
-  [bit//and r.bit-and]
-  [bit//or  r.bit-or]
-  [bit//xor r.bit-xor]
-  )
-
-(runtime: (bit//logical-right-shift shift input)
-  ($_ r.then
-      (limit-shift! shift)
-      (r.cond (list (no-shift-clause shift input)
-                    [(|> (@@ shift) (r.< (r.int 32)))
-                     (with-vars [$mid]
-                       (let [mid (|> (int64-high (@@ input)) (r.bit-shl (|> (r.int 32) (r.- (@@ shift)))))
-                             high (|> (int64-high (@@ input)) (r.bit-ushr (@@ shift)))
-                             low (|> (int64-low (@@ input))
-                                     (r.bit-ushr (@@ shift))
-                                     (r.bit-or (r.if (r.apply (list (@@ $mid)) (r.global "is.na"))
-                                                 (r.int 0)
-                                                 (@@ $mid))))]
-                         ($_ r.then
-                             (r.set! $mid mid)
-                             (int//new high low))))]
-                    [(|> (@@ shift) (r.= (r.int 32)))
-                     (let [high (int64-high (@@ input))]
-                       (int//new (r.int 0) high))])
-              (let [low (|> (int64-high (@@ input)) (r.bit-ushr (|> (@@ shift) (r.- (r.int 32)))))]
-                (int//new (r.int 0) low)))))
-
-(def: runtime//bit
-  Runtime
-  ($_ r.then
-      @@bit//and
-      @@bit//or
-      @@bit//xor
-      @@bit//not
-      @@bit//left-shift
-      @@bit//arithmetic-right-shift-32
-      @@bit//arithmetic-right-shift
-      @@bit//logical-right-shift
-      ))
-
-(runtime: (frac//decode input)
-  (with-vars [output]
-    ($_ r.then
-        (r.set! output (r.apply (list (@@ input)) (r.global "as.numeric")))
-        (r.if (|> (@@ output) (r.= r.n/a))
-          ..none
-          (..some (@@ output))))))
-
-(def: runtime//frac
-  Runtime
-  ($_ r.then
-      @@frac//decode))
-
-(def: inc (-> Expression Expression) (|>> (r.+ (r.int 1))))
-
-(template [<name> <top-cmp>]
-  [(def: (<name> top value)
-     (-> Expression Expression Expression)
-     (|> (|> value (r.>= (r.int 0)))
-         (r.and (|> value (<top-cmp> top)))))]
-
-  [within? r.<]
-  [up-to?  r.<=]
-  )
-
-(def: (text-clip start end text)
-  (-> Expression Expression Expression Expression)
-  (r.apply (list text start end)
-           (r.global "substr")))
-
-(def: (text-length text)
-  (-> Expression Expression)
-  (r.apply (list text) (r.global "nchar")))
-
-(runtime: (text//index subject param start)
-  (with-vars [idx startF subjectL]
-    ($_ r.then
-        (r.set! startF (int//to-float (@@ start)))
-        (r.set! subjectL (text-length (@@ subject)))
-        (r.if (|> (@@ startF) (within? (@@ subjectL)))
-          ($_ r.then
-              (r.set! idx (|> (r.apply-kw (list (@@ param) (r.if (|> (@@ startF) (r.= (r.int 0)))
-                                                             (@@ subject)
-                                                             (text-clip (inc (@@ startF))
-                                                                        (inc (@@ subjectL))
-                                                                        (@@ subject))))
-                                          (list ["fixed" (r.bool #1)])
-                                          (r.global "regexpr"))
-                              (r.nth (r.int 1))))
-              (r.if (|> (@@ idx) (r.= (r.int -1)))
-                ..none
-                (..some (int//from-float (|> (@@ idx) (r.+ (@@ startF)))))))
-          ..none))))
-
-(runtime: (text//clip text from to)
-  (with-vars [length]
-    ($_ r.then
-        (r.set! length (r.length (@@ text)))
-        (r.if ($_ r.and
-                  (|> (@@ to) (within? (@@ length)))
-                  (|> (@@ from) (up-to? (@@ to))))
-          (..some (text-clip (inc (@@ from)) (inc (@@ to)) (@@ text)))
-          ..none))))
-
-(def: (char-at idx text)
-  (-> Expression Expression Expression)
-  (r.apply (list (text-clip idx idx text))
-           (r.global "utf8ToInt")))
-
-(runtime: (text//char text idx)
-  (r.if (|> (@@ idx) (within? (r.length (@@ text))))
-    ($_ r.then
-        (r.set! idx (inc (@@ idx)))
-        (..some (int//from-float (char-at (@@ idx) (@@ text)))))
-    ..none))
-
-(def: runtime//text
-  Runtime
-  ($_ r.then
-      @@text//index
-      @@text//clip
-      @@text//char))
-
-(def: (check-index-out-of-bounds array idx body)
-  (-> Expression Expression Expression Expression)
-  (r.if (|> idx (r.<= (r.length array)))
-    body
-    (r.stop (r.string "Array index out of bounds!"))))
-
-(runtime: (array//new size)
-  (with-vars [output]
-    ($_ r.then
-        (r.set! output (r.list (list)))
-        (r.set-nth! (|> (@@ size) (r.+ (r.int 1)))
-                    r.null
-                    output)
-        (@@ output))))
-
-(runtime: (array//get array idx)
-  (with-vars [temp]
-    (<| (check-index-out-of-bounds (@@ array) (@@ idx))
-        ($_ r.then
-            (r.set! temp (|> (@@ array) (r.nth (@@ idx))))
-            (r.if (|> (@@ temp) (r.= r.null))
-              ..none
-              (..some (@@ temp)))))))
-
-(runtime: (array//put array idx value)
-  (<| (check-index-out-of-bounds (@@ array) (@@ idx))
-      ($_ r.then
-          (r.set-nth! (@@ idx) (@@ value) array)
-          (@@ array))))
-
-(def: runtime//array
-  Runtime
-  ($_ r.then
-      @@array//new
-      @@array//get
-      @@array//put))
-
-(runtime: (box//write value box)
-  ($_ r.then
-      (r.set-nth! (r.int 1) (@@ value) box)
-      ..unit))
-
-(def: runtime//box
-  Runtime
-  ($_ r.then
-      @@box//write))
-
-(def: runtime
-  Runtime
-  ($_ r.then
-      runtime//lux
-      @@f2^32
-      @@f2^63
-      @@int//new
-      @@int//from-float
-      runtime//bit
-      runtime//int
-      runtime//adt
-      runtime//frac
-      runtime//text
-      runtime//array
-      runtime//box
-      runtime//io
-      ))
-
-(def: #export artifact Text (format prefix ".r"))
-
-(def: #export translate
-  (Meta (Process Any))
-  (do macro.Monad<Meta>
-    [_ //.init-module-buffer
-     _ (//.save runtime)]
-    (//.save-module! artifact)))
diff --git a/lux-r/source/luxc/lang/translation/r/statement.jvm.lux b/lux-r/source/luxc/lang/translation/r/statement.jvm.lux
deleted file mode 100644
index 1798cb56d..000000000
--- a/lux-r/source/luxc/lang/translation/r/statement.jvm.lux
+++ /dev/null
@@ -1,45 +0,0 @@
-(.module:
-  lux
-  (lux (control [monad #+ do])
-       [macro]
-       (data text/format))
-  (luxc (lang [".L" module]
-              (host [r #+ Expression @@])))
-  [//]
-  (// [".T" runtime]
-      [".T" reference]
-      [".T" eval]))
-
-(def: #export (translate-def name expressionT expressionO metaV)
-  (-> Text Type Expression Code (Meta Any))
-  (do {@ macro.Monad<Meta>}
-    [current-module macro.current-module-name
-     #let [def-name [current-module name]]]
-    (case (macro.get-identifier-ann (name-of #.alias) metaV)
-      (#.Some real-def)
-      (do @
-        [[realT realA realV] (macro.find-def real-def)
-         _ (moduleL.define def-name [realT metaV realV])]
-        (wrap []))
-
-      _
-      (do @
-        [#let [def-name (referenceT.global def-name)]
-         _ (//.save (r.set! def-name expressionO))
-         expressionV (evalT.eval (@@ def-name))
-         _ (moduleL.define def-name [expressionT metaV expressionV])
-         _ (if (macro.type? metaV)
-             (case (macro.declared-tags metaV)
-               #.Nil
-               (wrap [])
-
-               tags
-               (moduleL.declare-tags tags (macro.export? metaV) (:coerce Type expressionV)))
-             (wrap []))
-         #let [_ (log! (format "DEF " (%name def-name)))]]
-        (wrap []))
-      )))
-
-(def: #export (translate-program programO)
-  (-> Expression (Meta Expression))
-  (macro.fail "translate-program NOT IMPLEMENTED YET"))
diff --git a/lux-r/source/luxc/lang/translation/r/structure.jvm.lux b/lux-r/source/luxc/lang/translation/r/structure.jvm.lux
deleted file mode 100644
index cea8fcd59..000000000
--- a/lux-r/source/luxc/lang/translation/r/structure.jvm.lux
+++ /dev/null
@@ -1,31 +0,0 @@
-(.module:
-  lux
-  (lux (control [monad #+ do])
-       (data [text]
-             text/format)
-       [macro])
-  (luxc ["&" lang]
-        (lang [synthesis #+ Synthesis]
-              (host [r #+ Expression])))
-  [//]
-  (// [".T" runtime]))
-
-(def: #export (translate-tuple translate elemsS+)
-  (-> (-> Synthesis (Meta Expression)) (List Synthesis) (Meta Expression))
-  (case elemsS+
-    #.Nil
-    (:: macro.Monad<Meta> wrap runtimeT.unit)
-
-    (#.Cons singletonS #.Nil)
-    (translate singletonS)
-
-    _
-    (do {@ macro.Monad<Meta>}
-      [elemsT+ (monad.map @ translate elemsS+)]
-      (wrap (r.list elemsT+)))))
-
-(def: #export (translate-variant translate tag tail? valueS)
-  (-> (-> Synthesis (Meta Expression)) Nat Bit Synthesis (Meta Expression))
-  (do macro.Monad<Meta>
-    [valueT (translate valueS)]
-    (wrap (runtimeT.variant tag tail? valueT))))
diff --git a/lux-r/source/program.lux b/lux-r/source/program.lux
index e2cf047e9..183797d4f 100644
--- a/lux-r/source/program.lux
+++ b/lux-r/source/program.lux
@@ -1,180 +1,367 @@
 (.module:
-  [lux (#- Definition)
-   ["@" target]
-   ["." host (#+ import:)]
+  [lux #*
+   [program (#+ program:)]
+   ["." ffi]
+   ["." debug]
    [abstract
-    [monad (#+ do)]]
+    ["." monad (#+ do)]]
    [control
-    ["." io (#+ IO)]
+    [pipe (#+ exec> case> new>)]
     ["." try (#+ Try)]
-    [parser
-     [cli (#+ program:)]]
+    ["." exception (#+ exception:)]
+    ["." io (#+ IO io)]
     [concurrency
      ["." promise (#+ Promise)]]]
    [data
-    ["." product]
-    [text
-     ["%" format (#+ format)]]
+    ["." maybe]
+    ["." text ("#\." hash)
+     ["%" format (#+ format)]
+     [encoding
+      ["." utf8]]]
     [collection
-     [array (#+ Array)]
-     ["." dictionary]]]
-   [world
-    ["." file]]
-   [target
-    [jvm
-     [bytecode (#+ Bytecode)]]]
+     ["." array (#+ Array)]]]
+   [macro
+    ["." template]]
+   [math
+    [number (#+ hex)
+     ["n" nat]
+     ["." i64]]]
+   ["." world #_
+    ["." file]
+    ["#/." program]]
+   ["@" target
+    ["_" r]]
    [tool
     [compiler
-     [default
-      ["." platform (#+ Platform)]]
+     [phase (#+ Operation Phase)]
+     [reference
+      [variable (#+ Register)]]
      [language
       [lux
+       [program (#+ Program)]
+       [generation (#+ Context Host)]
+       ["." synthesis]
        [analysis
-        ["." macro (#+ Expander)]]
+        [macro (#+ Expander)]]
        [phase
-        [extension (#+ Phase Bundle Operation Handler Extender)
+        ["." extension (#+ Extender Handler)
+         ["#/." bundle]
          ["." analysis #_
-          ["#" jvm]]
+          ["#" r]]
          ["." generation #_
-          ["#" jvm]]
-         ## ["." directive #_
-         ##  ["#" jvm]]
-         ]
+          ["#" r]]]
         [generation
-         ["." jvm #_
-          ## ["." runtime (#+ Anchor Definition)]
-          ["." packager]
-          ## ["#/." host]
-          ]]]]]]]]
+         ["." reference]
+         ["." r
+          ["." runtime]]]]]]
+     [default
+      ["." platform (#+ Platform)]]
+     [meta
+      ["." packager #_
+       ["#" script]]]]]]
   [program
    ["/" compositor
-    ["/." cli]
-    ["/." static]]]
-  [luxc
-   [lang
-    [host
-     ["_" jvm]]
-    ["." directive #_
-     ["#" jvm]]
-    [translation
-     ["." jvm
-      ["." runtime]
-      ["." expression]
-      ["#/." program]
-      ["translation" extension]]]]])
-
-(import: #long java/lang/reflect/Method
-  (invoke [java/lang/Object [java/lang/Object]] #try java/lang/Object))
-
-(import: #long (java/lang/Class c)
-  (getMethod [java/lang/String [(java/lang/Class java/lang/Object)]] #try java/lang/reflect/Method))
-
-(import: #long java/lang/Object
-  (getClass [] (java/lang/Class java/lang/Object)))
-
-(def: _object-class
-  (java/lang/Class java/lang/Object)
-  (host.class-for java/lang/Object))
-
-(def: _apply2-args
-  (Array (java/lang/Class java/lang/Object))
-  (|> (host.array (java/lang/Class java/lang/Object) 2)
-      (host.array-write 0 _object-class)
-      (host.array-write 1 _object-class)))
-
-(def: _apply4-args
-  (Array (java/lang/Class java/lang/Object))
-  (|> (host.array (java/lang/Class java/lang/Object) 4)
-      (host.array-write 0 _object-class)
-      (host.array-write 1 _object-class)
-      (host.array-write 2 _object-class)
-      (host.array-write 3 _object-class)))
-
-(def: #export (expander macro inputs lux)
+    ["#." cli]
+    ["#." static]]])
+
+(ffi.import: java/lang/String)
+
+(ffi.import: (java/lang/Class a)
+  ["#::."
+   (#static forName [java/lang/String] #try (java/lang/Class java/lang/Object))])
+
+(ffi.import: java/lang/Object
+  ["#::."
+   (toString [] java/lang/String)
+   (getClass [] (java/lang/Class java/lang/Object))])
+
+(ffi.import: java/lang/Long
+  ["#::."
+   (intValue [] java/lang/Integer)])
+
+(ffi.import: java/lang/Integer
+  ["#::."
+   (longValue [] long)])
+
+(ffi.import: java/lang/Number
+  ["#::."
+   (intValue [] java/lang/Integer)
+   (longValue [] long)
+   (doubleValue [] double)])
+
+(ffi.import: javax/script/ScriptEngine
+  ["#::."
+   (eval [java/lang/String] #try java/lang/Object)])
+
+(ffi.import: org/renjin/script/RenjinScriptEngine)
+
+(ffi.import: org/renjin/script/RenjinScriptEngineFactory
+  ["#::."
+   (new [])
+   (getScriptEngine [] org/renjin/script/RenjinScriptEngine)])
+
+(template [<name>]
+  [(exception: (<name> {object java/lang/Object})
+     (exception.report
+      ["Class" (java/lang/Object::toString (java/lang/Object::getClass object))]
+      ["Object" (java/lang/Object::toString object)]))]
+
+  [unknown_kind_of_object]
+  [cannot_apply_a_non_function]
+  )
+
+## (def: host_bit
+##   (-> Bit org/armedbear/lisp/LispObject)
+##   (|>> (case> #0 (org/armedbear/lisp/Nil::NIL)
+##               #1 (org/armedbear/lisp/Symbol::T))))
+
+## (def: (host_value value)
+##   (-> Any org/armedbear/lisp/LispObject)
+##   (let [to_sub (: (-> Any org/armedbear/lisp/LispObject)
+##                   (function (_ sub_value)
+##                     (let [sub_value (:coerce java/lang/Object sub_value)]
+##                       (`` (<| (~~ (template [<type> <then>]
+##                                     [(case (ffi.check <type> sub_value)
+##                                        (#.Some sub_value)
+##                                        (`` (|> sub_value (~~ (template.splice <then>))))
+##                                        #.None)]
+
+##                                     [[java/lang/Object] [host_value]]
+##                                     [java/lang/Boolean [..host_bit]]
+##                                     [java/lang/Integer [java/lang/Integer::longValue org/armedbear/lisp/Fixnum::getInstance]]
+##                                     [java/lang/Long [org/armedbear/lisp/Bignum::getInstance]]
+##                                     [java/lang/Double [org/armedbear/lisp/DoubleFloat::new]]
+##                                     [java/lang/String [org/armedbear/lisp/SimpleString::new]]
+##                                     ))
+##                               ## else
+##                               (:coerce org/armedbear/lisp/LispObject sub_value))))))]
+##     (`` (ffi.object [] org/armedbear/lisp/LispObject [program/LuxADT]
+##           []
+##           ## Methods
+##           (program/LuxADT
+##            [] (getValue self) java/lang/Object
+##            (:coerce java/lang/Object value))
+
+##           (org/armedbear/lisp/LispObject
+##            [] (length self)
+##            int
+##            (|> value
+##                (:coerce (Array java/lang/Object))
+##                array.size
+##                (:coerce java/lang/Long)
+##                java/lang/Number::intValue))
+
+##           (~~ (template [<name>]
+##                 [(org/armedbear/lisp/LispObject
+##                   [] (<name> self {idx int})
+##                   org/armedbear/lisp/LispObject
+##                   (case (array.read (|> idx java/lang/Integer::longValue (:coerce Nat))
+##                                     (:coerce (Array java/lang/Object) value))
+##                     (#.Some sub)
+##                     (to_sub sub)
+
+##                     #.None
+##                     (org/armedbear/lisp/Nil::NIL)))]
+
+##                 [NTH] [SVREF] [elt]
+##                 ))
+##           ))))
+
+(type: (Reader a)
+  (-> a (Try Any)))
+
+## (def: (read_variant read host_object)
+##   (-> (Reader org/armedbear/lisp/LispObject) (Reader org/armedbear/lisp/Cons))
+##   (do try.monad
+##     [tag (read (org/armedbear/lisp/LispObject::NTH +0 host_object))
+##      value (read (org/armedbear/lisp/LispObject::NTH +2 host_object))]
+##     (wrap [(java/lang/Long::intValue (:coerce java/lang/Long tag))
+##            (case (ffi.check org/armedbear/lisp/Nil (org/armedbear/lisp/LispObject::NTH +1 host_object))
+##              (#.Some _)
+##              (: Any (ffi.null))
+
+##              _
+##              (: Any synthesis.unit))
+##            value])))
+
+## (def: (read_tuple read host_object)
+##   (-> (Reader org/armedbear/lisp/LispObject) (Reader org/armedbear/lisp/SimpleVector))
+##   (let [size (.nat (org/armedbear/lisp/LispObject::length host_object))]
+##     (loop [idx 0
+##            output (:coerce (Array Any) (array.new size))]
+##       (if (n.< size idx)
+##         ## TODO: Start using "SVREF" instead of "elt" ASAP
+##         (case (read (org/armedbear/lisp/LispObject::elt (.int idx) host_object))
+##           (#try.Failure error)
+##           (#try.Failure error)
+
+##           (#try.Success member)
+##           (recur (inc idx) (array.write! idx (:coerce Any member) output)))
+##         (#try.Success output)))))
+
+(def: (read host_object)
+  (Reader java/lang/Object)
+  (`` (<| ## (~~ (template [<class> <post_processing>]
+       ##       [(case (ffi.check <class> host_object)
+       ##          (#.Some host_object)
+       ##          (`` (|> host_object (~~ (template.splice <post_processing>))))
+
+       ##          #.None)]
+
+       ##       [org/armedbear/lisp/Bignum [org/armedbear/lisp/Bignum::longValue #try.Success]]
+       ##       [org/armedbear/lisp/Fixnum [org/armedbear/lisp/Fixnum::longValue #try.Success]]
+       ##       [org/armedbear/lisp/DoubleFloat [org/armedbear/lisp/DoubleFloat::doubleValue #try.Success]]
+       ##       [org/armedbear/lisp/SimpleString [org/armedbear/lisp/SimpleString::getStringValue #try.Success]]
+       ##       [org/armedbear/lisp/Cons [(read_variant read)]]
+       ##       [org/armedbear/lisp/SimpleVector [(read_tuple read)]]
+       ##       [org/armedbear/lisp/Nil [(new> (#try.Success false) [])]]
+       ##       [org/armedbear/lisp/Closure [#try.Success]]
+       ##       [program/LuxADT [program/LuxADT::getValue #try.Success]]))
+       ## (case (ffi.check org/armedbear/lisp/Symbol host_object)
+       ##   (#.Some host_object)
+       ##   (if (is? (org/armedbear/lisp/Symbol::T) host_object)
+       ##     (#try.Success true)
+       ##     (exception.throw ..unknown_kind_of_object [host_object]))
+
+       ##   #.None)
+       ## else
+       (exception.throw ..unknown_kind_of_object [host_object])
+       )))
+
+## (def: ensure_macro
+##   (-> Macro (Maybe org/armedbear/lisp/Closure))
+##   (|>> (:coerce java/lang/Object) (ffi.check org/armedbear/lisp/Closure)))
+
+## (def: (call_macro inputs lux macro)
+##   (-> (List Code) Lux org/armedbear/lisp/Closure (Try (Try [Lux (List Code)])))
+##   (do try.monad
+##     [raw_output (org/armedbear/lisp/LispObject::execute (..host_value inputs) (..host_value lux) macro)]
+##     (:coerce (Try (Try [Lux (List Code)]))
+##              (..read raw_output))))
+
+(def: (expander macro inputs lux)
   Expander
-  (do try.monad
-    [apply-method (|> macro
-                      (:coerce java/lang/Object)
-                      (java/lang/Object::getClass)
-                      (java/lang/Class::getMethod "apply" _apply2-args))]
-    (:coerce (Try (Try [Lux (List Code)]))
-             (java/lang/reflect/Method::invoke
-              (:coerce java/lang/Object macro)
-              (|> (host.array java/lang/Object 2)
-                  (host.array-write 0 (:coerce java/lang/Object inputs))
-                  (host.array-write 1 (:coerce java/lang/Object lux)))
-              apply-method))))
-
-(def: #export platform
-  ## (IO (Platform Anchor (Bytecode Any) Definition))
-  (IO (Platform _.Anchor _.Inst _.Definition))
+  ## (case (ensure_macro macro)
+  ##   (#.Some macro)
+  ##   (call_macro inputs lux macro)
+
+  ##   #.None
+  ##   (exception.throw ..cannot_apply_a_non_function (:coerce java/lang/Object macro)))
+  (exception.throw ..cannot_apply_a_non_function (:coerce java/lang/Object macro)))
+
+(def: host
+  (IO (Host _.Expression _.Expression))
+  (io (let [interpreter (|> (org/renjin/script/RenjinScriptEngineFactory::new)
+                            org/renjin/script/RenjinScriptEngineFactory::getScriptEngine)
+            run! (: (-> (_.Code Any) (Try Any))
+                    (function (_ code)
+                      (do try.monad
+                        [host_value (javax/script/ScriptEngine::eval (_.code code) interpreter)]
+                        (read host_value))))]
+        (: (Host _.Expression _.Expression)
+           (structure
+            (def: (evaluate! context code)
+              (run! code))
+            
+            (def: (execute! input)
+              (javax/script/ScriptEngine::eval (_.code input) interpreter))
+            
+            (def: (define! context input)
+              (let [global (reference.artifact context)
+                    $global (_.var global)]
+                (do try.monad
+                  [#let [definition (_.set! $global input)]
+                   _ (javax/script/ScriptEngine::eval (_.code definition) interpreter)
+                   value (run! $global)]
+                  (wrap [global value definition]))))
+
+            (def: (ingest context content)
+              (|> content (\ utf8.codec decode) try.assume (:coerce _.Expression)))
+
+            (def: (re_learn context content)
+              (run! content))
+            
+            (def: (re_load context content)
+              (do try.monad
+                [_ (run! content)]
+                (run! (_.var (reference.artifact context)))))
+            )))))
+
+(def: platform
+  (IO (Platform _.SVar _.Expression _.Expression))
   (do io.monad
-    [## host jvm/host.host
-     host jvm.host]
-    (wrap {#platform.&file-system (file.async file.system)
+    [host ..host]
+    (wrap {#platform.&file_system (file.async file.default)
            #platform.host host
-           ## #platform.phase jvm.generate
-           #platform.phase expression.translate
-           ## #platform.runtime runtime.generate
-           #platform.runtime runtime.translate
-           #platform.write product.right})))
-
-(def: extender
-  Extender
-  ## TODO: Stop relying on coercions ASAP.
-  (<| (:coerce Extender)
-      (function (@self handler))
-      (:coerce Handler)
-      (function (@self name phase))
-      (:coerce Phase)
-      (function (@self parameters))
-      (:coerce Operation)
-      (function (@self state))
-      (:coerce Try)
-      try.assume
-      (:coerce Try)
-      (do try.monad
-        [method (|> handler
-                    (:coerce java/lang/Object)
-                    (java/lang/Object::getClass)
-                    (java/lang/Class::getMethod "apply" _apply4-args))]
-        (java/lang/reflect/Method::invoke
-         (:coerce java/lang/Object handler)
-         (|> (host.array java/lang/Object 4)
-             (host.array-write 0 (:coerce java/lang/Object name))
-             (host.array-write 1 (:coerce java/lang/Object phase))
-             (host.array-write 2 (:coerce java/lang/Object parameters))
-             (host.array-write 3 (:coerce java/lang/Object state)))
-         method))))
-
-(def: (target service)
-  (-> /cli.Service /cli.Target)
-  (case service
-    (^or (#/cli.Compilation [sources libraries target module])
-         (#/cli.Interpretation [sources libraries target module])
-         (#/cli.Export [sources target]))
-    target))
-
-(def: (declare-success! _)
+           #platform.phase r.generate
+           #platform.runtime runtime.generate
+           #platform.write (|>> _.code (\ utf8.codec encode))})))
+
+(def: (program context program)
+  (Program _.Expression _.Expression)
+  (_.apply/2 program [(runtime.lux::program_args (_.commandArgs/0 [])) _.null]))
+
+(for {@.old
+      (def: extender
+        Extender
+        ## TODO: Stop relying on coercions ASAP.
+        (<| (:coerce Extender)
+            (function (@self handler))
+            (:coerce Handler)
+            (function (@self name phase))
+            (:coerce Phase)
+            (function (@self archive parameters))
+            (:coerce Operation)
+            (function (@self state))
+            (:coerce Try)
+            try.assume
+            (:coerce Try)
+            (exec
+              ("lux io log" "TODO: Extender")
+              (#try.Failure "TODO: Extender"))))
+
+      @.r
+      (def: (extender handler)
+        Extender
+        (:assume handler))})
+
+(def: (declare_success! _)
   (-> Any (Promise Any))
-  (promise.future (io.exit +0)))
-
-(program: [{service /cli.service}]
-  (let [jar-path (format (..target service) (:: file.system separator) "program.jar")]
-    (exec (do promise.monad
-            [_ (/.compiler {#/static.host @.jvm
-                            #/static.host-module-extension ".jvm"
-                            #/static.target (..target service)
-                            #/static.artifact-extension ".class"}
-                           ..expander
-                           analysis.bundle
-                           ..platform
-                           ## generation.bundle
-                           translation.bundle
-                           (directive.bundle ..extender)
-                           jvm/program.program
-                           ..extender
-                           service
-                           [(packager.package jvm/program.class) jar-path])]
-            (..declare-success! []))
-      (io.io []))))
+  (promise.future (\ world/program.default exit +0)))
+
+(def: (scope body)
+  (-> _.Expression _.Expression)
+  (let [$program (_.var "lux_program")]
+    ($_ _.then
+        (_.set! $program (_.function (list) body))
+        (_.apply/0 $program [])
+        )))
+
+(`` (program: [{service /cli.service}]
+      (let [extension ".r"]
+        (do io.monad
+          [platform ..platform]
+          (exec (do promise.monad
+                  [_ (/.compiler {#/static.host @.r
+                                  #/static.host_module_extension extension
+                                  #/static.target (/cli.target service)
+                                  #/static.artifact_extension extension}
+                                 ..expander
+                                 analysis.bundle
+                                 (io.io platform)
+                                 generation.bundle
+                                 extension/bundle.empty
+                                 ..program
+                                 [_.SVar _.Expression _.Expression]
+                                 ..extender
+                                 service
+                                 [(packager.package (_.manual "")
+                                                    _.code
+                                                    _.then
+                                                    ..scope)
+                                  (format (/cli.target service)
+                                          (\ file.default separator)
+                                          "program"
+                                          extension)])]
+                  (..declare_success! []))
+            (io.io []))))))
diff --git a/stdlib/source/lux/target/r.lux b/stdlib/source/lux/target/r.lux
new file mode 100644
index 000000000..c60456ad2
--- /dev/null
+++ b/stdlib/source/lux/target/r.lux
@@ -0,0 +1,378 @@
+(.module:
+  [lux (#- Code or and list if function cond not int)
+   [control
+    [pipe (#+ case> cond> new>)]
+    ["." function]
+    [parser
+     ["<.>" code]]]
+   [data
+    ["." maybe ("#\." functor)]
+    ["." text
+     ["%" format (#+ format)]]
+    [collection
+     ["." list ("#\." functor fold)]]]
+   [macro
+    [syntax (#+ syntax:)]
+    ["." template]
+    ["." code]]
+   [math
+    [number
+     ["f" frac]]]
+   [type
+    abstract]])
+
+(abstract: #export (Code kind)
+  Text
+
+  {}
+
+  (template [<type> <super>+]
+    [(with_expansions [<kind> (template.identifier [<type> "'"])]
+       (abstract: #export (<kind> kind) Any)
+       (`` (type: #export <type> (|> Any <kind> (~~ (template.splice <super>+))))))]
+    
+    [Expression [Code]]
+    )
+
+  (template [<type> <super>+]
+    [(with_expansions [<kind> (template.identifier [<type> "'"])]
+       (abstract: #export (<kind> kind) Any)
+       (`` (type: #export (<type> <brand>) (|> <brand> <kind> (~~ (template.splice <super>+))))))]
+    
+    [Var [Expression' Code]]
+    )
+
+  (template [<var> <kind>]
+    [(abstract: #export <kind> Any)
+     (type: #export <var> (Var <kind>))]
+
+    [SVar Single]
+    [PVar Poly]
+    )
+
+  (def: #export var
+    (-> Text SVar)
+    (|>> :abstraction))
+  
+  (def: #export var_args
+    PVar
+    (:abstraction "..."))
+
+  (def: #export manual
+    (-> Text Code)
+    (|>> :abstraction))
+  
+  (def: #export code
+    (-> (Code Any) Text)
+    (|>> :representation))
+
+  (def: (self_contained code)
+    (-> Text Expression)
+    (:abstraction
+     (format "(" code ")")))
+
+  (def: nest
+    (-> Text Text)
+    (let [nested_new_line (format text.new_line text.tab)]
+      (|>> (format text.new_line)
+           (text.replace_all text.new_line nested_new_line))))
+
+  (def: (_block expression)
+    (-> Text Text)
+    (format "{" (nest expression) text.new_line "}"))
+
+  (def: #export (block expression)
+    (-> Expression Expression)
+    (:abstraction
+     (format "{" (:representation expression) "}")))
+
+  (template [<name> <r>]
+    [(def: #export <name>
+       Expression
+       (..self_contained <r>))]
+
+    [null "NULL"]
+    [n/a "NA"]
+    )
+
+  (template [<name>]
+    [(def: #export <name> Expression n/a)]
+
+    [not_available]
+    [not_applicable]
+    [no_answer]
+    )
+
+  (def: #export bool
+    (-> Bit Expression)
+    (|>> (case> #0 "FALSE"
+                #1 "TRUE")
+         ..self_contained))
+
+  (def: #export (int value)
+    (-> Int Expression)
+    (..self_contained (format "as.integer(" (%.int value) ")")))
+
+  (def: #export float
+    (-> Frac Expression)
+    (|>> (cond> [(f.= f.positive_infinity)]
+                [(new> "1.0/0.0" [])]
+                
+                [(f.= f.negative_infinity)]
+                [(new> "-1.0/0.0" [])]
+                
+                [(f.= f.not_a_number)]
+                [(new> "0.0/0.0" [])]
+                
+                ## else
+                [%.frac])
+         ..self_contained))
+
+  (def: sanitize
+    (-> Text Text)
+    (`` (|>> (~~ (template [<find> <replace>]
+                   [(text.replace_all <find> <replace>)]
+
+                   ["\" "\\"]
+                   ["|" "\|"]
+                   [text.alarm "\a"]
+                   [text.back_space "\b"]
+                   [text.tab "\t"]
+                   [text.new_line "\n"]
+                   [text.carriage_return "\r"]
+                   [text.double_quote (format "\" text.double_quote)]
+                   ))
+             )))
+
+  (def: #export string
+    (-> Text Expression)
+    (|>> %.text ..sanitize ..self_contained))
+
+  (def: (composite_literal left_delimiter right_delimiter entry_serializer)
+    (All [a] (-> Text Text (-> a Text)
+                 (-> (List a) Expression)))
+    (.function (_ entries)
+      (..self_contained
+       (format left_delimiter
+               (|> entries (list\map entry_serializer) (text.join_with ","))
+               right_delimiter))))
+
+  (def: #export named_list
+    (-> (List [Text Expression]) Expression)
+    (composite_literal "list(" ")" (.function (_ [key value])
+                                     (format key "=" (:representation value)))))
+  
+  (template [<name> <function>]
+    [(def: #export <name>
+       (-> (List Expression) Expression)
+       (composite_literal (format <function> "(") ")" ..code))]
+
+    [vector "c"]
+    [list   "list"]
+    )
+  
+  (def: #export (slice from to list)
+    (-> Expression Expression Expression Expression)
+    (..self_contained
+     (format (:representation list)
+             "[" (:representation from) ":" (:representation to) "]")))
+
+  (def: #export (slice_from from list)
+    (-> Expression Expression Expression)
+    (..self_contained
+     (format (:representation list)
+             "[-1"  ":-" (:representation from) "]")))
+
+  (def: #export (apply args func)
+    (-> (List Expression) Expression Expression)
+    (..self_contained
+     (format (:representation func) "(" (text.join_with "," (list\map ..code args)) ")")))
+
+  (def: #export (apply_kw args kw_args func)
+    (-> (List Expression) (List [Text Expression]) Expression Expression)
+    (..self_contained
+     (format (:representation func)
+             (format "("
+                     (text.join_with "," (list\map ..code args)) ","
+                     (text.join_with "," (list\map (.function (_ [key val])
+                                                     (format key "=" (:representation val)))
+                                                   kw_args))
+                     ")"))))
+
+  (syntax: (arity_inputs {arity <code>.nat})
+    (wrap (case arity
+            0 (.list)
+            _ (|> arity
+                  list.indices
+                  (list\map (|>> %.nat code.local_identifier))))))
+
+  (syntax: (arity_types {arity <code>.nat})
+    (wrap (list.repeat arity (` ..Expression))))
+
+  (template [<arity> <function>+]
+    [(with_expansions [<apply> (template.identifier ["apply/" <arity>])
+                       <inputs> (arity_inputs <arity>)
+                       <types> (arity_types <arity>)
+                       <definitions> (template.splice <function>+)]
+       (def: #export (<apply> function [<inputs>])
+         (-> Expression [<types>] Expression)
+         (..apply (.list <inputs>) function))
+
+       (template [<function>]
+         [(`` (def: #export (~~ (template.identifier [<function> "/" <arity>]))
+                (-> [<types>] Expression)
+                (<apply> (..var <function>))))]
+
+         <definitions>))]
+
+    [0
+     [["commandArgs"]]]
+    [1
+     []]
+    [2
+     []]
+    )
+
+  (def: #export (nth idx list)
+    (-> Expression Expression Expression)
+    (..self_contained
+     (format (:representation list) "[[" (:representation idx) "]]")))
+
+  (def: #export (if test then else)
+    (-> Expression Expression Expression Expression)
+    (..self_contained
+     (format "if(" (:representation test) ")"
+             " " (.._block (:representation then))
+             " else " (.._block (:representation else)))))
+
+  (def: #export (when test then)
+    (-> Expression Expression Expression)
+    (..self_contained
+     (format "if(" (:representation test) ") {"
+             (.._block (:representation then))
+             text.new_line "}")))
+
+  (def: #export (cond clauses else)
+    (-> (List [Expression Expression]) Expression Expression)
+    (list\fold (.function (_ [test then] next)
+                 (if test then next))
+               else
+               (list.reverse clauses)))
+
+  (template [<name> <op>]
+    [(def: #export (<name> param subject)
+       (-> Expression Expression Expression)
+       (..self_contained
+        (format (:representation subject)
+                " " <op> " "
+                (:representation param))))]
+
+    [=       "=="]
+    [<       "<"]
+    [<=      "<="]
+    [>       ">"]
+    [>=      ">="]
+    [+       "+"]
+    [-       "-"]
+    [*       "*"]
+    [/       "/"]
+    [%%      "%%"]
+    [**      "**"]
+    [or      "||"]
+    [and     "&&"]
+    )
+
+  (template [<name> <func>]
+    [(def: #export (<name> param subject)
+       (-> Expression Expression Expression)
+       (..apply (.list subject param) (..var <func>)))]
+
+    [bit_or   "bitwOr"]
+    [bit_and  "bitwAnd"]
+    [bit_xor  "bitwXor"]
+    [bit_shl  "bitwShiftL"]
+    [bit_ushr "bitwShiftR"]
+    )
+
+  (def: #export (bit_not subject)
+    (-> Expression Expression)
+    (..apply (.list subject) (..var "bitwNot")))
+
+  (template [<name> <op>]
+    [(def: #export <name>
+       (-> Expression Expression)
+       (|>> :representation (format <op>) ..self_contained))]
+
+    [not    "!"]
+    [negate "-"]
+    )
+  
+  (def: #export (length list)
+    (-> Expression Expression)
+    (..apply (.list list) (..var "length")))
+
+  (def: #export (range from to)
+    (-> Expression Expression Expression)
+    (..self_contained
+     (format (:representation from) ":" (:representation to))))
+
+  (def: #export (function inputs body)
+    (-> (List (Ex [k] (Var k))) Expression Expression)
+    (let [args (|> inputs (list\map ..code) (text.join_with ", "))]
+      (..self_contained
+       (format "function(" args ") "
+               (.._block (:representation body))))))
+
+  (def: #export (try body warning error finally)
+    (-> Expression (Maybe Expression) (Maybe Expression) (Maybe Expression) Expression)
+    (let [optional (: (-> Text (Maybe Expression) (-> Text Text) Text)
+                      (.function (_ parameter value preparation)
+                        (|> value
+                            (maybe\map (|>> :representation preparation (format ", " parameter " = ")))
+                            (maybe.default ""))))]
+      (..self_contained
+       (format "tryCatch("
+               (.._block (:representation body))
+               (optional "warning" warning function.identity)
+               (optional "error" error function.identity)
+               (optional "finally" finally .._block)
+               ")"))))
+
+  (def: #export (while test body)
+    (-> Expression Expression Expression)
+    (..self_contained
+     (format "while (" (:representation test) ") "
+             (.._block (:representation body)))))
+
+  (def: #export (for_in var inputs body)
+    (-> SVar Expression Expression Expression)
+    (..self_contained
+     (format "for (" (:representation var) " in " (:representation inputs) ")"
+             (.._block (:representation body)))))
+
+  (template [<name> <keyword>]
+    [(def: #export (<name> message)
+       (-> Expression Expression)
+       (..apply (.list message) (..var <keyword>)))]
+
+    [stop  "stop"]
+    [print "print"]
+    )
+
+  (def: #export (set! var value)
+    (-> SVar Expression Expression)
+    (..self_contained
+     (format (:representation var) " <- " (:representation value))))
+
+  (def: #export (set_nth! idx value list)
+    (-> Expression Expression SVar Expression)
+    (..self_contained
+     (format (:representation list) "[[" (:representation idx) "]] <- " (:representation value))))
+
+  (def: #export (then pre post)
+    (-> Expression Expression Expression)
+    (:abstraction
+     (format (:representation pre)
+             text.new_line
+             (:representation post))))
+  )
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/extension/analysis/r.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/extension/analysis/r.lux
new file mode 100644
index 000000000..12f578ed2
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/extension/analysis/r.lux
@@ -0,0 +1,34 @@
+(.module:
+  [lux #*
+   ["." ffi]
+   [abstract
+    ["." monad (#+ do)]]
+   [control
+    ["<>" parser
+     ["<c>" code (#+ Parser)]]]
+   [data
+    [collection
+     ["." array (#+ Array)]
+     ["." dictionary]
+     ["." list]]]
+   ["." type
+    ["." check]]
+   ["@" target
+    ["_" r]]]
+  [//
+   ["/" lux (#+ custom)]
+   [//
+    ["." bundle]
+    [//
+     ["." analysis #_
+      ["#/." type]]
+     [//
+      ["." analysis (#+ Analysis Operation Phase Handler Bundle)]
+      [///
+       ["." phase]]]]]])
+
+(def: #export bundle
+  Bundle
+  (<| (bundle.prefix "r")
+      (|> bundle.empty
+          )))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r.lux
new file mode 100644
index 000000000..cd0f6b7cc
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r.lux
@@ -0,0 +1,17 @@
+(.module:
+  [lux #*
+   [data
+    [collection
+     ["." dictionary]]]]
+  ["." / #_
+   ["#." common]
+   ["#." host]
+   [////
+    [generation
+     [r
+      [runtime (#+ Bundle)]]]]])
+
+(def: #export bundle
+  Bundle
+  (dictionary.merge /common.bundle
+                    /host.bundle))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r/common.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r/common.lux
new file mode 100644
index 000000000..cb82c6cb4
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r/common.lux
@@ -0,0 +1,179 @@
+(.module:
+  [lux #*
+   [abstract
+    ["." monad (#+ do)]]
+   [control
+    ["." function]
+    ["." try]
+    ["<>" parser
+     ["<s>" synthesis (#+ Parser)]]]
+   [data
+    ["." product]
+    ["." text
+     ["%" format (#+ format)]]
+    [collection
+     ["." dictionary]
+     ["." set]
+     ["." list ("#\." functor fold)]]]
+   [math
+    [number
+     ["f" frac]]]
+   ["@" target
+    ["_" r (#+ Expression)]]]
+  ["." //// #_
+   ["/" bundle]
+   ["/#" // #_
+    ["." extension]
+    [generation
+     [extension (#+ Nullary Unary Binary Trinary
+                    nullary unary binary trinary)]
+     ["." reference]
+     ["//" r #_
+      ["#." runtime (#+ Operation Phase Handler Bundle Generator)]
+      ["#." case]]]
+    [//
+     ["." synthesis (#+ %synthesis)]
+     ["." generation]
+     [///
+      ["#" phase]]]]])
+
+(def: #export (custom [parser handler])
+  (All [s]
+    (-> [(Parser s)
+         (-> Text (Generator s))]
+        Handler))
+  (function (_ extension_name phase archive input)
+    (case (<s>.run parser input)
+      (#try.Success input')
+      (handler extension_name phase archive input')
+
+      (#try.Failure error)
+      (/////.throw extension.invalid_syntax [extension_name %synthesis input]))))
+
+## (template: (!unary function)
+##   (|>> list _.apply/* (|> (_.constant function))))
+
+## ## ## TODO: Get rid of this ASAP
+## ## (def: lux::syntax_char_case!
+## ##   (..custom [($_ <>.and
+## ##                  <s>.any
+## ##                  <s>.any
+## ##                  (<>.some (<s>.tuple ($_ <>.and
+## ##                                          (<s>.tuple (<>.many <s>.i64))
+## ##                                          <s>.any))))
+## ##              (function (_ extension_name phase archive [input else conditionals])
+## ##                (do {! /////.monad}
+## ##                  [@input (\ ! map _.var (generation.gensym "input"))
+## ##                   inputG (phase archive input)
+## ##                   elseG (phase archive else)
+## ##                   conditionalsG (: (Operation (List [Expression Expression]))
+## ##                                    (monad.map ! (function (_ [chars branch])
+## ##                                                   (do !
+## ##                                                     [branchG (phase archive branch)]
+## ##                                                     (wrap [(|> chars (list\map (|>> .int _.int (_.=/2 @input))) _.or)
+## ##                                                            branchG])))
+## ##                                               conditionals))]
+## ##                  (wrap (_.let (list [@input inputG])
+## ##                          (list (list\fold (function (_ [test then] else)
+## ##                                             (_.if test then else))
+## ##                                           elseG
+## ##                                           conditionalsG))))))]))
+
+## (def: lux_procs
+##   Bundle
+##   (|> /.empty
+##       ## (/.install "syntax char case!" lux::syntax_char_case!)
+##       (/.install "is" (binary _.eq/2))
+##       ## (/.install "try" (unary //runtime.lux//try))
+##       ))
+
+## ## (def: (capped operation parameter subject)
+## ##   (-> (-> Expression Expression Expression)
+## ##       (-> Expression Expression Expression))
+## ##   (//runtime.i64//64 (operation parameter subject)))
+
+## (def: i64_procs
+##   Bundle
+##   (<| (/.prefix "i64")
+##       (|> /.empty
+##           (/.install "and" (binary _.logand/2))
+##           (/.install "or" (binary _.logior/2))
+##           (/.install "xor" (binary _.logxor/2))
+##           (/.install "left-shift" (binary _.ash/2))
+##           (/.install "right-shift" (binary (product.uncurry //runtime.i64//right_shift)))
+##           (/.install "=" (binary _.=/2))
+##           (/.install "<" (binary _.</2))
+##           (/.install "+" (binary _.+/2))
+##           (/.install "-" (binary _.-/2))
+##           (/.install "*" (binary _.*/2))
+##           (/.install "/" (binary _.floor/2))
+##           (/.install "%" (binary _.rem/2))
+##           ## (/.install "f64" (unary (_.//2 (_.float +1.0))))
+##           (/.install "char" (unary (|>> _.code-char/1 _.string/1)))
+##           )))
+
+## (def: f64_procs
+##   Bundle
+##   (<| (/.prefix "f64")
+##       (|> /.empty
+##           ## (/.install "=" (binary (product.uncurry _.=/2)))
+##           ## (/.install "<" (binary (product.uncurry _.</2)))
+##           ## (/.install "+" (binary (product.uncurry _.+/2)))
+##           ## (/.install "-" (binary (product.uncurry _.-/2)))
+##           ## (/.install "*" (binary (product.uncurry _.*/2)))
+##           ## (/.install "/" (binary (product.uncurry _.//2)))
+##           ## (/.install "%" (binary (product.uncurry _.rem/2)))
+##           ## (/.install "i64" (unary _.truncate/1))
+##           (/.install "encode" (unary _.write-to-string/1))
+##           ## (/.install "decode" (unary //runtime.f64//decode))
+##           )))
+
+## (def: (text//index [offset sub text])
+##   (Trinary (Expression Any))
+##   (//runtime.text//index offset sub text))
+
+## (def: (text//clip [offset length text])
+##   (Trinary (Expression Any))
+##   (//runtime.text//clip offset length text))
+
+## (def: (text//char [index text])
+##   (Binary (Expression Any))
+##   (_.char-code/1 (_.char/2 [text index])))
+
+## (def: text_procs
+##   Bundle
+##   (<| (/.prefix "text")
+##       (|> /.empty
+##           (/.install "=" (binary _.string=/2))
+##           ## (/.install "<" (binary (product.uncurry _.string<?/2)))
+##           (/.install "concat" (binary (function (_ [left right])
+##                                         (_.concatenate/3 [(_.symbol "string") left right]))))
+##           (/.install "index" (trinary ..text//index))
+##           (/.install "size" (unary _.length/1))
+##           (/.install "char" (binary ..text//char))
+##           (/.install "clip" (trinary ..text//clip))
+##           )))
+
+## (def: (io//log! message)
+##   (Unary (Expression Any))
+##   (_.progn (list (_.write-line/1 message)
+##                  //runtime.unit)))
+
+## (def: io_procs
+##   Bundle
+##   (<| (/.prefix "io")
+##       (|> /.empty
+##           (/.install "log" (unary ..io//log!))
+##           (/.install "error" (unary _.error/1))
+##           )))
+
+(def: #export bundle
+  Bundle
+  (<| (/.prefix "lux")
+      (|> /.empty
+          ## (dictionary.merge lux_procs)
+          ## (dictionary.merge i64_procs)
+          ## (dictionary.merge f64_procs)
+          ## (dictionary.merge text_procs)
+          ## (dictionary.merge io_procs)
+          )))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r/host.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r/host.lux
new file mode 100644
index 000000000..2d9148dda
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/extension/generation/r/host.lux
@@ -0,0 +1,39 @@
+(.module:
+  [lux #*
+   [abstract
+    ["." monad (#+ do)]]
+   [control
+    ["." function]
+    ["<>" parser
+     ["<s>" synthesis (#+ Parser)]]]
+   [data
+    [collection
+     ["." dictionary]
+     ["." list]]
+    [text
+     ["%" format (#+ format)]]]
+   [target
+    ["_" r (#+ Var Expression)]]]
+  ["." // #_
+   ["#." common (#+ custom)]
+   ["//#" /// #_
+    ["/" bundle]
+    ["/#" // #_
+     ["." extension]
+     [generation
+      [extension (#+ Nullary Unary Binary Trinary
+                     nullary unary binary trinary)]
+      ["." reference]
+      ["//" r #_
+       ["#." runtime (#+ Operation Phase Handler Bundle
+                         with_vars)]]]
+     ["/#" // #_
+      ["." generation]
+      ["//#" /// #_
+       ["#." phase]]]]]])
+
+(def: #export bundle
+  Bundle
+  (<| (/.prefix "r")
+      (|> /.empty
+          )))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r.lux
new file mode 100644
index 000000000..b4b3e6423
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r.lux
@@ -0,0 +1,58 @@
+(.module:
+  [lux #*
+   [abstract
+    [monad (#+ do)]]
+   [target
+    ["_" r]]]
+  ["." / #_
+   [runtime (#+ Phase)]
+   ["#." primitive]
+   ["#." structure]
+   ["#." reference]
+   ["#." case]
+   ["#." loop]
+   ["#." function]
+   ["/#" // #_
+    ["#." reference]
+    ["/#" // #_
+     ["#." extension]
+     ["/#" // #_
+      [analysis (#+)]
+      ["#." synthesis]
+      ["//#" /// #_
+       ["#." phase ("#\." monad)]
+       [reference (#+)
+        [variable (#+)]]]]]]])
+
+(def: #export (generate archive synthesis)
+  Phase
+  (case synthesis
+    (^template [<tag> <generator>]
+      [(^ (<tag> value))
+       (//////phase\wrap (<generator> value))])
+    ([////synthesis.bit  /primitive.bit]
+     [////synthesis.i64  /primitive.i64]
+     [////synthesis.f64  /primitive.f64]
+     [////synthesis.text /primitive.text])
+
+    (#////synthesis.Reference value)
+    (//reference.reference /reference.system archive value)
+
+    (^template [<tag> <generator>]
+      [(^ (<tag> value))
+       (<generator> generate archive value)])
+    ([////synthesis.variant /structure.variant]
+     [////synthesis.tuple /structure.tuple]
+     [////synthesis.branch/let /case.let]
+     [////synthesis.branch/if /case.if]
+     [////synthesis.branch/get /case.get]
+     [////synthesis.function/apply /function.apply]
+
+     [////synthesis.branch/case /case.case]
+     [////synthesis.loop/scope /loop.scope]
+     [////synthesis.loop/recur /loop.recur]
+     [////synthesis.function/abstraction /function.function])
+
+    (#////synthesis.Extension extension)
+    (///extension.apply archive generate extension)
+    ))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/case.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/case.lux
new file mode 100644
index 000000000..fe4e4a7c2
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/case.lux
@@ -0,0 +1,239 @@
+(.module:
+  [lux (#- case let if)
+   [abstract
+    ["." monad (#+ do)]]
+   [data
+    ["." product]
+    ["." text
+     ["%" format (#+ format)]]
+    [collection
+     ["." list ("#\." functor fold)]
+     ["." set]]]
+   [macro
+    ["." template]]
+   [math
+    [number
+     ["i" int]]]
+   [target
+    ["_" r (#+ Expression SVar)]]]
+  ["." // #_
+   ["#." runtime (#+ Operation Phase Generator)]
+   ["#." reference]
+   ["#." primitive]
+   ["/#" // #_
+    ["#." reference]
+    ["/#" // #_
+     ["#." synthesis #_
+      ["#/." case]]
+     ["/#" // #_
+      ["#." synthesis (#+ Member Synthesis Path)]
+      ["#." generation]
+      ["//#" /// #_
+       [reference
+        ["#." variable (#+ Register)]]
+       ["#." phase ("#\." monad)]
+       [meta
+        [archive (#+ Archive)]]]]]]])
+
+(def: #export register
+  (-> Register SVar)
+  (|>> (///reference.local //reference.system) :assume))
+
+(def: #export capture
+  (-> Register SVar)
+  (|>> (///reference.foreign //reference.system) :assume))
+
+(def: #export (let expression archive [valueS register bodyS])
+  (Generator [Synthesis Register Synthesis])
+  (do ///////phase.monad
+    [valueO (expression archive valueS)
+     bodyO (expression archive bodyS)]
+    (wrap (_.block
+           ($_ _.then
+               (_.set! (..register register) valueO)
+               bodyO)))))
+
+(def: #export (if expression archive [testS thenS elseS])
+  (Generator [Synthesis Synthesis Synthesis])
+  (do ///////phase.monad
+    [testO (expression archive testS)
+     thenO (expression archive thenS)
+     elseO (expression archive elseS)]
+    (wrap (_.if testO thenO elseO))))
+
+(def: #export (get expression archive [pathP valueS])
+  (Generator [(List Member) Synthesis])
+  (do ///////phase.monad
+    [valueO (expression archive valueS)]
+    (wrap (list\fold (function (_ side source)
+                       (.let [method (.case side
+                                       (^template [<side> <accessor>]
+                                         [(<side> lefts)
+                                          (<accessor> (_.int (.int lefts)))])
+                                       ([#.Left  //runtime.tuple::left]
+                                        [#.Right //runtime.tuple::right]))]
+                         (method source)))
+                     valueO
+                     (list.reverse pathP)))))
+
+(def: $savepoint (_.var "lux_pm_cursor_savepoint"))
+(def: $cursor (_.var "lux_pm_cursor"))
+(def: $temp (_.var "lux_pm_temp"))
+(def: $alt_error (_.var "alt_error"))
+
+(def: top
+  _.length)
+
+(def: next
+  (|>> _.length (_.+ (_.int +1))))
+
+(def: (push! value var)
+  (-> Expression SVar Expression)
+  (_.set_nth! (next var) value var))
+
+(def: (pop! var)
+  (-> SVar Expression)
+  (_.set_nth! (top var) _.null var))
+
+(def: (push_cursor! value)
+  (-> Expression Expression)
+  (push! value $cursor))
+
+(def: save_cursor!
+  Expression
+  (push! (_.slice (_.float +1.0) (_.length $cursor) $cursor)
+         $savepoint))
+
+(def: restore_cursor!
+  Expression
+  (_.set! $cursor (_.nth (top $savepoint) $savepoint)))
+
+(def: peek
+  Expression
+  (|> $cursor (_.nth (top $cursor))))
+
+(def: pop_cursor!
+  Expression
+  (pop! $cursor))
+
+(def: error
+  (_.string (template.with_locals [error]
+              (template.text [error]))))
+
+(def: fail!
+  (_.stop ..error))
+
+(def: (catch handler)
+  (-> Expression Expression)
+  (_.function (list $alt_error)
+    (_.if (|> $alt_error (_.= ..error))
+      handler
+      (_.stop $alt_error))))
+
+(def: (pattern_matching' expression archive)
+  (Generator Path)
+  (function (recur pathP)
+    (.case pathP
+      (#/////synthesis.Then bodyS)
+      (expression archive bodyS)
+
+      #/////synthesis.Pop
+      (///////phase\wrap ..pop_cursor!)
+
+      (#/////synthesis.Bind register)
+      (///////phase\wrap (_.set! (..register register) ..peek))
+
+      (#/////synthesis.Bit_Fork when thenP elseP)
+      (do {! ///////phase.monad}
+        [then! (recur thenP)
+         else! (.case elseP
+                 (#.Some elseP)
+                 (recur elseP)
+
+                 #.None
+                 (wrap ..fail!))]
+        (wrap (.if when
+                (_.if ..peek
+                  then!
+                  else!)
+                (_.if ..peek
+                  else!
+                  then!))))
+
+      (^template [<tag> <format> <=>]
+        [(<tag> cons)
+         (do {! ///////phase.monad}
+           [clauses (monad.map ! (function (_ [match then])
+                                   (do !
+                                     [then! (recur then)]
+                                     (wrap [(<=> (|> match <format>)
+                                                 ..peek)
+                                            then!])))
+                               (#.Cons cons))]
+           (wrap (list\fold (function (_ [when then] else)
+                              (_.if when then else))
+                            ..fail!
+                            clauses)))])
+      ([#/////synthesis.I64_Fork //primitive.i64 //runtime.i64::=]
+       [#/////synthesis.F64_Fork //primitive.f64 _.=]
+       [#/////synthesis.Text_Fork //primitive.text _.=])
+
+      (^template [<pm> <flag> <prep>]
+        [(^ (<pm> idx))
+         (///////phase\wrap ($_ _.then
+                                (_.set! $temp (|> idx <prep> .int _.int (//runtime.sum::get ..peek (//runtime.flag <flag>))))
+                                (_.if (_.= _.null $temp)
+                                  ..fail!
+                                  (..push_cursor! $temp))))])
+      ([/////synthesis.side/left  false (<|)]
+       [/////synthesis.side/right true  inc])
+
+      (^ (/////synthesis.member/left 0))
+      (///////phase\wrap (_.nth (_.int +1) ..peek))
+
+      (^template [<pm> <getter>]
+        [(^ (<pm> lefts))
+         (///////phase\wrap (|> ..peek (<getter> (_.int (.int lefts))) ..push_cursor!))])
+      ([/////synthesis.member/left  //runtime.tuple::left]
+       [/////synthesis.member/right //runtime.tuple::right])
+
+      (^ (/////synthesis.path/seq leftP rightP))
+      (do ///////phase.monad
+        [leftO (recur leftP)
+         rightO (recur rightP)]
+        (wrap ($_ _.then
+                  leftO
+                  rightO)))
+
+      (^ (/////synthesis.path/alt leftP rightP))
+      (do {! ///////phase.monad}
+        [leftO (recur leftP)
+         rightO (recur rightP)]
+        (wrap (_.try ($_ _.then
+                         ..save_cursor!
+                         leftO)
+                     #.None
+                     (#.Some (..catch ($_ _.then
+                                          ..restore_cursor!
+                                          rightO)))
+                     #.None)))
+      )))
+
+(def: (pattern_matching expression archive pathP)
+  (Generator Path)
+  (do ///////phase.monad
+    [pattern_matching! (pattern_matching' expression archive pathP)]
+    (wrap (_.try pattern_matching!
+                 #.None
+                 (#.Some (..catch (_.stop (_.string "Invalid expression for pattern-matching."))))
+                 #.None))))
+
+(def: #export (case expression archive [valueS pathP])
+  (Generator [Synthesis Path])
+  (do {! ///////phase.monad}
+    [valueO (expression archive valueS)]
+    (<| (\ ! map (|>> ($_ _.then
+                          (_.set! $cursor (_.list (list valueO)))
+                          (_.set! $savepoint (_.list (list))))
+                      _.block))
+        (pattern_matching expression archive pathP))))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/function.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/function.lux
new file mode 100644
index 000000000..c89ffaf0a
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/function.lux
@@ -0,0 +1,116 @@
+(.module:
+  [lux (#- function)
+   [abstract
+    ["." monad (#+ do)]]
+   [control
+    pipe]
+   [data
+    ["." product]
+    ["." text
+     ["%" format (#+ format)]]
+    [collection
+     ["." list ("#\." functor fold)]]]
+   [target
+    ["_" r (#+ Expression SVar)]]]
+  ["." // #_
+   ["#." runtime (#+ Operation Phase Generator)]
+   ["#." reference]
+   ["#." case]
+   ["/#" // #_
+    ["#." reference]
+    ["//#" /// #_
+     [analysis (#+ Variant Tuple Abstraction Application Analysis)]
+     [synthesis (#+ Synthesis)]
+     ["#." generation (#+ Context)]
+     ["//#" /// #_
+      [arity (#+ Arity)]
+      ["#." phase ("#\." monad)]
+      [reference
+       [variable (#+ Register Variable)]]
+      [meta
+       [archive
+        ["." artifact]]]]]]])
+
+(def: #export (apply expression archive [functionS argsS+])
+  (Generator (Application Synthesis))
+  (do {! ///////phase.monad}
+    [functionO (expression archive functionS)
+     argsO+ (monad.map ! (expression archive) argsS+)]
+    (wrap (_.apply argsO+ functionO))))
+
+(def: (with_closure function_id $function inits function_definition)
+  (-> artifact.ID SVar (List Expression) Expression (Operation Expression))
+  (case inits
+    #.Nil
+    (do ///////phase.monad
+      [_ (/////generation.execute! function_definition)
+       _ (/////generation.save! (%.nat function_id)
+                                function_definition)]
+      (wrap $function))
+
+    _
+    (do ///////phase.monad
+      [#let [closure_definition (_.set! $function
+                                        (_.function (|> inits
+                                                        list.size
+                                                        list.indices
+                                                        (list\map //case.capture))
+                                          ($_ _.then
+                                              function_definition
+                                              $function)))]
+       _ (/////generation.execute! closure_definition)
+       _ (/////generation.save! (%.nat function_id) closure_definition)]
+      (wrap (_.apply inits $function)))))
+
+(def: $curried (_.var "curried"))
+(def: $missing (_.var "missing"))
+
+(def: (input_declaration register)
+  (-> Register Expression)
+  (_.set! (|> register inc //case.register)
+          (|> $curried (_.nth (|> register inc .int _.int)))))
+
+(def: #export (function expression archive [environment arity bodyS])
+  (Generator (Abstraction Synthesis))
+  (do {! ///////phase.monad}
+    [[[function_module function_artifact] bodyO] (/////generation.with_new_context archive
+                                                   (do !
+                                                     [$self (\ ! map (|>> ///reference.artifact _.var)
+                                                               (/////generation.context archive))]
+                                                     (/////generation.with_anchor $self
+                                                       (expression archive bodyS))))
+     closureO+ (monad.map ! (expression archive) environment)
+     #let [arityO (|> arity .int _.int)
+           $num_args (_.var "num_args")
+           $self (_.var (///reference.artifact [function_module function_artifact]))
+           apply_poly (.function (_ args func)
+                        (_.apply (list func args) (_.var "do.call")))]]
+    (with_closure function_artifact $self closureO+
+      (_.set! $self (_.function (list _.var_args)
+                      ($_ _.then
+                          (_.set! $curried (_.list (list _.var_args)))
+                          (_.set! $num_args (_.length $curried))
+                          (_.cond (list [(|> $num_args (_.= arityO))
+                                         ($_ _.then
+                                             (_.set! (//case.register 0) $self)
+                                             (|> arity
+                                                 list.indices
+                                                 (list\map input_declaration)
+                                                 (list\fold _.then bodyO)))]
+                                        [(|> $num_args (_.> arityO))
+                                         (let [arity_args (_.slice (_.int +1) arityO $curried)
+                                               output_func_args (_.slice (|> arityO (_.+ (_.int +1)))
+                                                                         $num_args
+                                                                         $curried)]
+                                           (|> $self
+                                               (apply_poly arity_args)
+                                               (apply_poly output_func_args)))])
+                                  ## (|> $num_args (_.< arityO))
+                                  (let [$missing (_.var "missing")]
+                                    (_.function (list _.var_args)
+                                      ($_ _.then
+                                          (_.set! $missing (_.list (list _.var_args)))
+                                          (|> $self
+                                              (apply_poly (_.apply (list $curried $missing)
+                                                                   (_.var "append"))))))))))))
+    ))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/loop.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/loop.lux
new file mode 100644
index 000000000..c8f8bd1d5
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/loop.lux
@@ -0,0 +1,64 @@
+(.module:
+  [lux (#- Scope)
+   [abstract
+    ["." monad (#+ do)]]
+   [data
+    ["." product]
+    ["." text
+     ["%" format (#+ format)]]
+    [collection
+     ["." list ("#\." functor fold)]
+     ["." set (#+ Set)]]]
+   [math
+    [number
+     ["n" nat]]]
+   [target
+    ["_" r]]]
+  ["." // #_
+   [runtime (#+ Operation Phase Generator)]
+   ["#." case]
+   ["/#" // #_
+    ["#." reference]
+    ["/#" // #_
+     [synthesis
+      ["." case]]
+     ["/#" // #_
+      ["."synthesis (#+ Scope Synthesis)]
+      ["#." generation]
+      ["//#" /// #_
+       ["#." phase]
+       [meta
+        [archive (#+ Archive)]]
+       [reference
+        [variable (#+ Register)]]]]]]])
+
+(def: #export (scope expression archive [offset initsS+ bodyS])
+  (Generator (Scope Synthesis))
+  (case initsS+
+    ## function/false/non-independent loop
+    #.Nil
+    (expression archive bodyS)
+
+    ## true loop
+    _
+    (do {! ///////phase.monad}
+      [$scope (\ ! map _.var (/////generation.gensym "loop_scope"))
+       initsO+ (monad.map ! (expression archive) initsS+)
+       bodyO (/////generation.with_anchor $scope
+               (expression archive bodyS))]
+      (wrap (_.block
+             ($_ _.then
+                 (_.set! $scope
+                         (_.function (|> initsS+
+                                         list.size
+                                         list.indices
+                                         (list\map (|>> (n.+ offset) //case.register)))
+                           bodyO))
+                 (_.apply initsO+ $scope)))))))
+
+(def: #export (recur expression archive argsS+)
+  (Generator (List Synthesis))
+  (do {! ///////phase.monad}
+    [$scope /////generation.anchor
+     argsO+ (monad.map ! (expression archive) argsS+)]
+    (wrap (_.apply argsO+ $scope))))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/primitive.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/primitive.lux
new file mode 100644
index 000000000..efbd569f4
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/primitive.lux
@@ -0,0 +1,17 @@
+(.module:
+  [lux (#- i64)
+   [target
+    ["_" r (#+ Expression)]]]
+  ["." // #_
+   ["#." runtime]])
+
+(template [<name> <type> <code>]
+  [(def: #export <name>
+     (-> <type> Expression)
+     <code>)]
+
+  [bit  Bit       _.bool]
+  [i64  (I64 Any) (|>> .int //runtime.i64)]
+  [f64  Frac      _.float]
+  [text Text      _.string]
+  )
diff --git a/lux-r/source/luxc/lang/translation/r/procedure/common.jvm.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/procedure/common.lux
index 85ccd90dc..85ccd90dc 100644
--- a/lux-r/source/luxc/lang/translation/r/procedure/common.jvm.lux
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/procedure/common.lux
diff --git a/lux-r/source/luxc/lang/translation/r/procedure/host.jvm.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/procedure/host.lux
index 3bd33955f..3bd33955f 100644
--- a/lux-r/source/luxc/lang/translation/r/procedure/host.jvm.lux
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/procedure/host.lux
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/reference.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/reference.lux
new file mode 100644
index 000000000..c3f2e8289
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/reference.lux
@@ -0,0 +1,12 @@
+(.module:
+  [lux #*
+   [target
+    ["_" r (#+ Expression)]]]
+  [///
+   [reference (#+ System)]])
+
+(structure: #export system
+  (System Expression)
+
+  (def: constant _.var)
+  (def: variable _.var))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/runtime.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/runtime.lux
new file mode 100644
index 000000000..1b7119378
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/runtime.lux
@@ -0,0 +1,848 @@
+(.module:
+  [lux (#- Location inc i64)
+   ["." meta]
+   [abstract
+    ["." monad (#+ do)]]
+   [control
+    ["." function]
+    ["<>" parser
+     ["<.>" code]]]
+   [data
+    ["." product]
+    ["." text ("#\." hash)
+     ["%" format (#+ format)]
+     [encoding
+      ["." utf8]]]
+    [collection
+     ["." list ("#\." functor)]
+     ["." row]]]
+   ["." macro
+    [syntax (#+ syntax:)]
+    ["." code]]
+   [math
+    [number (#+ hex)
+     ["n" nat]
+     ["i" int ("#\." interval)]
+     ["." i64]]]
+   ["@" target
+    ["_" r (#+ SVar Expression)]]]
+  ["." /// #_
+   ["#." reference]
+   ["//#" /// #_
+    [analysis (#+ Variant)]
+    ["#." synthesis (#+ Synthesis)]
+    ["#." generation]
+    ["//#" ///
+     ["#." phase]
+     [reference
+      [variable (#+ Register)]]
+     [meta
+      [archive (#+ Output Archive)
+       ["." artifact (#+ Registry)]]]]]])
+
+(def: module_id
+  0)
+
+(template [<name> <base>]
+  [(type: #export <name>
+     (<base> _.SVar _.Expression _.Expression))]
+
+  [Operation /////generation.Operation]
+  [Phase /////generation.Phase]
+  [Handler /////generation.Handler]
+  [Bundle /////generation.Bundle]
+  )
+
+(type: #export (Generator i)
+  (-> Phase Archive i (Operation Expression)))
+
+(def: #export unit
+  Expression
+  (_.string /////synthesis.unit))
+
+(def: full_32 (hex "FFFFFFFF"))
+(def: half_32 (hex "7FFFFFFF"))
+(def: post_32 (hex "100000000"))
+
+(def: (cap_32 input)
+  (-> Nat Int)
+  (cond (n.> full_32 input)
+        (|> input (i64.and full_32) cap_32)
+        
+        (n.> half_32 input)
+        (|> post_32 (n.- input) .int (i.* -1))
+        
+        ## else
+        (.int input)))
+
+(def: high_32
+  (-> Nat Nat)
+  (i64.right_shift 32))
+
+(def: low_32
+  (-> Nat Nat)
+  (|>> (i64.and (hex "FFFFFFFF"))))
+
+(def: #export i64_high_field "luxIH")
+(def: #export i64_low_field "luxIL")
+
+(def: #export (i64 value)
+  (-> Int Expression)
+  (let [value (.nat value)
+        high (|> value ..high_32 ..cap_32)
+        low (|> value ..low_32 ..cap_32)]
+    (_.named_list (list [..i64_high_field (_.int high)]
+                        [..i64_low_field (_.int low)]))))
+
+(def: #export variant_tag_field "luxVT")
+(def: #export variant_flag_field "luxVF")
+(def: #export variant_value_field "luxVV")
+
+(def: #export (flag value)
+  (-> Bit Expression)
+  (if value
+    (_.string "")
+    _.null))
+
+(def: (variant' tag last? value)
+  (-> Expression Expression Expression Expression)
+  (_.named_list (list [..variant_tag_field tag]
+                      [..variant_flag_field last?]
+                      [..variant_value_field value])))
+
+(def: #export (variant tag last? value)
+  (-> Nat Bit Expression Expression)
+  (variant' (_.int (.int tag))
+            (flag last?)
+            value))
+
+(def: #export none
+  Expression
+  (variant 0 #0 ..unit))
+
+(def: #export some
+  (-> Expression Expression)
+  (variant 1 #1))
+
+(def: #export left
+  (-> Expression Expression)
+  (variant 0 #0))
+
+(def: #export right
+  (-> Expression Expression)
+  (variant 1 #1))
+
+(syntax: #export (with_vars {vars (<code>.tuple (<>.some <code>.local_identifier))}
+                   body)
+  (do {! meta.monad}
+    [ids (monad.seq ! (list.repeat (list.size vars) meta.count))]
+    (wrap (list (` (let [(~+ (|> vars
+                                 (list.zip/2 ids)
+                                 (list\map (function (_ [id var])
+                                             (list (code.local_identifier var)
+                                                   (` (_.var (~ (code.text (format "v" (%.nat id)))))))))
+                                 list.concat))]
+                     (~ body)))))))
+
+(syntax: (runtime: {declaration (<>.or <code>.local_identifier
+                                       (<code>.form (<>.and <code>.local_identifier
+                                                            (<>.some <code>.local_identifier))))}
+           code)
+  (do meta.monad
+    [runtime_id meta.count]
+    (macro.with_gensyms [g!_]
+      (let [runtime (code.local_identifier (///reference.artifact [..module_id runtime_id]))
+            runtime_name (` (_.var (~ (code.text (%.code runtime)))))]
+        (case declaration
+          (#.Left name)
+          (let [g!name (code.local_identifier name)]
+            (wrap (list (` (def: #export (~ g!name)
+                             _.SVar
+                             (~ runtime_name)))
+                        
+                        (` (def: (~ (code.local_identifier (format "@" name)))
+                             _.Expression
+                             (_.set! (~ runtime_name) (~ code)))))))
+          
+          (#.Right [name inputs])
+          (let [g!name (code.local_identifier name)
+                inputsC (list\map code.local_identifier inputs)
+                inputs_typesC (list\map (function.constant (` _.Expression))
+                                        inputs)]
+            (wrap (list (` (def: #export ((~ g!name) (~+ inputsC))
+                             (-> (~+ inputs_typesC) _.Expression)
+                             (_.apply (list (~+ inputsC)) (~ runtime_name))))
+
+                        (` (def: (~ (code.local_identifier (format "@" name)))
+                             _.Expression
+                             (..with_vars [(~+ inputsC)]
+                               (_.set! (~ runtime_name)
+                                       (_.function (list (~+ inputsC))
+                                         (~ code))))))))))))))
+
+(def: high_shift (_.bit_shl (_.int +32)))
+
+(runtime: f2^32 (|> (_.int +2) (_.** (_.int +32))))
+(runtime: f2^63 (|> (_.int +2) (_.** (_.int +63))))
+
+(def: (as_double value)
+  (-> Expression Expression)
+  (_.apply (list value) (_.var "as.double")))
+
+(def: (as_integer value)
+  (-> Expression Expression)
+  (_.apply (list value) (_.var "as.integer")))
+
+(runtime: (i64::unsigned_low input)
+  (with_vars [low]
+    ($_ _.then
+        (_.set! low (|> input (_.nth (_.string ..i64_low_field))))
+        (_.if (|> low (_.>= (_.int +0)))
+          low
+          (|> low (_.+ f2^32))))))
+
+(runtime: (i64::to_float input)
+  (let [high (|> input
+                 (_.nth (_.string ..i64_high_field))
+                 high_shift)
+        low (|> input
+                i64::unsigned_low)]
+    (|> high (_.+ low) as_double)))
+
+(runtime: (i64::new high low)
+  (_.named_list (list [..i64_high_field (as_integer high)]
+                      [..i64_low_field (as_integer low)])))
+
+(template [<name> <value>]
+  [(runtime: <name>
+     (..i64 <value>))]
+
+  [i64::zero +0]
+  [i64::one +1]
+  [i64::min i\bottom]
+  [i64::max i\top]
+  )
+
+(def: #export i64_high (_.nth (_.string ..i64_high_field)))
+(def: #export i64_low (_.nth (_.string ..i64_low_field)))
+
+(runtime: (i64::not input)
+  (i64::new (|> input i64_high _.bit_not)
+            (|> input i64_low _.bit_not)))
+
+(runtime: (i64::+ param subject)
+  (with_vars [sH sL pH pL
+              x00 x16 x32 x48]
+    ($_ _.then
+        (_.set! sH (|> subject i64_high))
+        (_.set! sL (|> subject i64_low))
+        (_.set! pH (|> param i64_high))
+        (_.set! pL (|> param i64_low))
+        (let [bits16 (_.manual "0xFFFF")
+              move_top_16 (_.bit_shl (_.int +16))
+              top_16 (_.bit_ushr (_.int +16))
+              bottom_16 (_.bit_and bits16)
+              split_16 (function (_ source)
+                         [(|> source top_16)
+                          (|> source bottom_16)])
+              split_int (function (_ high low)
+                          [(split_16 high)
+                           (split_16 low)])
+              
+              [[s48 s32] [s16 s00]] (split_int sH sL)
+              [[p48 p32] [p16 p00]] (split_int pH pL)
+              new_half (function (_ top bottom)
+                         (|> top bottom_16 move_top_16
+                             (_.bit_or (bottom_16 bottom))))]
+          ($_ _.then
+              (_.set! x00 (|> s00 (_.+ p00)))
+              (_.set! x16 (|> x00 top_16 (_.+ s16) (_.+ p16)))
+              (_.set! x32 (|> x16 top_16 (_.+ s32) (_.+ p32)))
+              (_.set! x48 (|> x32 top_16 (_.+ s48) (_.+ p48)))
+              (i64::new (new_half x48 x32)
+                        (new_half x16 x00)))))))
+
+(runtime: (i64::= reference sample)
+  (let [n/a? (function (_ value)
+               (_.apply (list value) (_.var "is.na")))
+        isTRUE? (function (_ value)
+                  (_.apply (list value) (_.var "isTRUE")))
+        comparison (: (-> (-> Expression Expression) Expression)
+                      (function (_ field)
+                        (|> (|> (field sample) (_.= (field reference)))
+                            (_.or (|> (n/a? (field sample))
+                                      (_.and (n/a? (field reference))))))))]
+    (|> (comparison i64_high)
+        (_.and (comparison i64_low))
+        isTRUE?)))
+
+(runtime: (i64::negate input)
+  (_.if (|> input (i64::= i64::min))
+    i64::min
+    (|> input i64::not (i64::+ i64::one))))
+
+(runtime: i64::-one
+  (i64::negate i64::one))
+
+(runtime: (i64::- param subject)
+  (i64::+ (i64::negate param) subject))
+
+(runtime: (i64::< reference sample)
+  (with_vars [r_? s_?]
+    ($_ _.then
+        (_.set! s_? (|> sample i64_high (_.< (_.int +0))))
+        (_.set! r_? (|> reference i64_high (_.< (_.int +0))))
+        (|> (|> s_? (_.and (_.not r_?)))
+            (_.or (|> (_.not s_?) (_.and r_?) _.not))
+            (_.or (|> sample
+                      (i64::- reference)
+                      i64_high
+                      (_.< (_.int +0))))))))
+
+(runtime: (i64::from_float input)
+  (_.cond (list [(_.apply (list input) (_.var "is.nan"))
+                 i64::zero]
+                [(|> input (_.<= (_.negate f2^63)))
+                 i64::min]
+                [(|> input (_.+ (_.float +1.0)) (_.>= f2^63))
+                 i64::max]
+                [(|> input (_.< (_.float +0.0)))
+                 (|> input _.negate i64::from_float i64::negate)])
+          (i64::new (|> input (_./ f2^32))
+                    (|> input (_.%% f2^32)))))
+
+(runtime: (i64::* param subject)
+  (with_vars [sH sL pH pL
+              x00 x16 x32 x48]
+    ($_ _.then
+        (_.set! sH (|> subject i64_high))
+        (_.set! pH (|> param i64_high))
+        (let [negative_subject? (|> sH (_.< (_.int +0)))
+              negative_param? (|> pH (_.< (_.int +0)))]
+          (_.cond (list [negative_subject?
+                         (_.if negative_param?
+                           (i64::* (i64::negate param)
+                                   (i64::negate subject))
+                           (i64::negate (i64::* param
+                                                (i64::negate subject))))]
+
+                        [negative_param?
+                         (i64::negate (i64::* (i64::negate param)
+                                              subject))])
+                  ($_ _.then
+                      (_.set! sL (|> subject i64_low))
+                      (_.set! pL (|> param i64_low))
+                      (let [bits16 (_.manual "0xFFFF")
+                            move_top_16 (_.bit_shl (_.int +16))
+                            top_16 (_.bit_ushr (_.int +16))
+                            bottom_16 (_.bit_and bits16)
+                            split_16 (function (_ source)
+                                       [(|> source top_16)
+                                        (|> source bottom_16)])
+                            split_int (function (_ high low)
+                                        [(split_16 high)
+                                         (split_16 low)])
+                            new_half (function (_ top bottom)
+                                       (|> top bottom_16 move_top_16
+                                           (_.bit_or (bottom_16 bottom))))
+                            x16_top (|> x16 top_16)
+                            x32_top (|> x32 top_16)]
+                        (with_vars [s48 s32 s16 s00
+                                    p48 p32 p16 p00]
+                          (let [[[_s48 _s32] [_s16 _s00]] (split_int sH sL)
+                                [[_p48 _p32] [_p16 _p00]] (split_int pH pL)
+                                set_subject_chunks! ($_ _.then (_.set! s48 _s48) (_.set! s32 _s32) (_.set! s16 _s16) (_.set! s00 _s00))
+                                set_param_chunks! ($_ _.then (_.set! p48 _p48) (_.set! p32 _p32) (_.set! p16 _p16) (_.set! p00 _p00))]
+                            ($_ _.then
+                                set_subject_chunks!
+                                set_param_chunks!
+                                (_.set! x00 (|> s00 (_.* p00)))
+                                (_.set! x16 (|> x00 top_16 (_.+ (|> s16 (_.* p00)))))
+                                (_.set! x32 x16_top)
+                                (_.set! x16 (|> x16 bottom_16 (_.+ (|> s00 (_.* p16)))))
+                                (_.set! x32 (|> x32 (_.+ x16_top) (_.+ (|> s32 (_.* p00)))))
+                                (_.set! x48 x32_top)
+                                (_.set! x32 (|> x32 bottom_16 (_.+ (|> s16 (_.* p16)))))
+                                (_.set! x48 (|> x48 (_.+ x32_top)))
+                                (_.set! x32 (|> x32 bottom_16 (_.+ (|> s00 (_.* p32)))))
+                                (_.set! x48 (|> x48 (_.+ x32_top)
+                                                (_.+ (|> s48 (_.* p00)))
+                                                (_.+ (|> s32 (_.* p16)))
+                                                (_.+ (|> s16 (_.* p32)))
+                                                (_.+ (|> s00 (_.* p48)))))
+                                (i64::new (new_half x48 x32)
+                                          (new_half x16 x00)))))
+                        )))))))
+
+(def: (limit_shift! shift)
+  (-> SVar Expression)
+  (_.set! shift (|> shift (_.bit_and (_.int +63)))))
+
+(def: (no_shift_clause shift input)
+  (-> SVar SVar [Expression Expression])
+  [(|> shift (_.= (_.int +0)))
+   input])
+
+(runtime: (i64::left_shift shift input)
+  ($_ _.then
+      (limit_shift! shift)
+      (_.cond (list (no_shift_clause shift input)
+                    [(|> shift (_.< (_.int +32)))
+                     (let [mid (|> (i64_low input) (_.bit_ushr (|> (_.int +32) (_.- shift))))
+                           high (|> (i64_high input)
+                                    (_.bit_shl shift)
+                                    (_.bit_or mid))
+                           low (|> (i64_low input)
+                                   (_.bit_shl shift))]
+                       (i64::new high low))])
+              (let [high (|> (i64_high input)
+                             (_.bit_shl (|> shift (_.- (_.int +32)))))]
+                (i64::new high (_.int +0))))))
+
+(runtime: (i64::arithmetic_right_shift_32 shift input)
+  (let [top_bit (|> input (_.bit_and (_.int (hex "+80000000"))))]
+    (|> input
+        (_.bit_ushr shift)
+        (_.bit_or top_bit))))
+
+(runtime: (i64::arithmetic_right_shift shift input)
+  ($_ _.then
+      (limit_shift! shift)
+      (_.cond (list (no_shift_clause shift input)
+                    [(|> shift (_.< (_.int +32)))
+                     (let [mid (|> (i64_high input) (_.bit_shl (|> (_.int +32) (_.- shift))))
+                           high (|> (i64_high input)
+                                    (i64::arithmetic_right_shift_32 shift))
+                           low (|> (i64_low input)
+                                   (_.bit_ushr shift)
+                                   (_.bit_or mid))]
+                       (i64::new high low))])
+              (let [low (|> (i64_high input)
+                            (i64::arithmetic_right_shift_32 (|> shift (_.- (_.int +32)))))
+                    high (_.if (|> (i64_high input) (_.>= (_.int +0)))
+                           (_.int +0)
+                           (_.int -1))]
+                (i64::new high low)))))
+
+(runtime: (i64::/ param subject)
+  (let [negative? (|>> (i64::< i64::zero))
+        valid_division_check [(|> param (i64::= i64::zero))
+                              (_.stop (_.string "Cannot divide by zero!"))]
+        short_circuit_check [(|> subject (i64::= i64::zero))
+                             i64::zero]]
+    (_.cond (list valid_division_check
+                  short_circuit_check
+
+                  [(|> subject (i64::= i64::min))
+                   (_.cond (list [(|> (|> param (i64::= i64::one))
+                                      (_.or (|> param (i64::= i64::-one))))
+                                  i64::min]
+                                 [(|> param (i64::= i64::min))
+                                  i64::one])
+                           (with_vars [approximation]
+                             ($_ _.then
+                                 (_.set! approximation
+                                         (|> subject
+                                             (i64::arithmetic_right_shift (_.int +1))
+                                             (i64::/ param)
+                                             (i64::left_shift (_.int +1))))
+                                 (_.if (|> approximation (i64::= i64::zero))
+                                   (_.if (negative? param)
+                                     i64::one
+                                     i64::-one)
+                                   (let [remainder (i64::- (i64::* param approximation)
+                                                           subject)]
+                                     (|> remainder
+                                         (i64::/ param)
+                                         (i64::+ approximation)))))))]
+                  [(|> param (i64::= i64::min))
+                   i64::zero]
+
+                  [(negative? subject)
+                   (_.if (negative? param)
+                     (|> (i64::negate subject)
+                         (i64::/ (i64::negate param)))
+                     (|> (i64::negate subject)
+                         (i64::/ param)
+                         i64::negate))]
+
+                  [(negative? param)
+                   (|> param
+                       i64::negate
+                       (i64::/ subject)
+                       i64::negate)])
+            (with_vars [result remainder approximate approximate_result log2 approximate_remainder]
+              ($_ _.then
+                  (_.set! result i64::zero)
+                  (_.set! remainder subject)
+                  (_.while (|> (|> remainder (i64::< param))
+                               (_.or (|> remainder (i64::= param))))
+                           (let [calc_rough_estimate (_.apply (list (|> (i64::to_float remainder) (_./ (i64::to_float param))))
+                                                              (_.var "floor"))
+                                 calc_approximate_result (i64::from_float approximate)
+                                 calc_approximate_remainder (|> approximate_result (i64::* param))
+                                 delta (_.if (|> (_.float +48.0) (_.<= log2))
+                                         (_.float +1.0)
+                                         (_.** (|> log2 (_.- (_.float +48.0)))
+                                               (_.float +2.0)))]
+                             ($_ _.then
+                                 (_.set! approximate (_.apply (list (_.float +1.0) calc_rough_estimate)
+                                                              (_.var "max")))
+                                 (_.set! log2 (let [log (function (_ input)
+                                                          (_.apply (list input) (_.var "log")))]
+                                                (_.apply (list (|> (log (_.int +2))
+                                                                   (_./ (log approximate))))
+                                                         (_.var "ceil"))))
+                                 (_.set! approximate_result calc_approximate_result)
+                                 (_.set! approximate_remainder calc_approximate_remainder)
+                                 (_.while (|> (negative? approximate_remainder)
+                                              (_.or (|> approximate_remainder (i64::< remainder))))
+                                          ($_ _.then
+                                              (_.set! approximate (|> delta (_.- approximate)))
+                                              (_.set! approximate_result calc_approximate_result)
+                                              (_.set! approximate_remainder calc_approximate_remainder)))
+                                 (_.set! result (|> (_.if (|> approximate_result (i64::= i64::zero))
+                                                      i64::one
+                                                      approximate_result)
+                                                    (i64::+ result)))
+                                 (_.set! remainder (|> remainder (i64::- approximate_remainder))))))
+                  result))
+            )))
+
+(runtime: (i64::% param subject)
+  (let [flat (|> subject (i64::/ param) (i64::* param))]
+    (|> subject (i64::- flat))))
+
+(runtime: (lux::try op)
+  (with_vars [error value]
+    (_.try ($_ _.then
+               (_.set! value (_.apply (list ..unit) op))
+               (..right value))
+           #.None
+           (#.Some (_.function (list error)
+                     (..left (_.nth (_.string "message")
+                                    error))))
+           #.None)))
+
+(runtime: (lux::program_args program_args)
+  (with_vars [inputs value]
+    ($_ _.then
+        (_.set! inputs ..none)
+        (<| (_.for_in value program_args)
+            (_.set! inputs (..some (_.list (list value inputs)))))
+        inputs)))
+
+(def: runtime::lux
+  Expression
+  ($_ _.then
+      @lux::try
+      @lux::program_args
+      ))
+
+(def: current_time_float
+  Expression
+  (let [raw_time (_.apply (list) (_.var "Sys.time"))]
+    (_.apply (list raw_time) (_.var "as.numeric"))))
+
+(runtime: (io::current_time! _)
+  (|> current_time_float
+      (_.* (_.float +1,000.0))
+      i64::from_float))
+
+(def: runtime::io
+  Expression
+  ($_ _.then
+      @io::current_time!
+      ))
+
+(def: minimum_index_length
+  (-> SVar Expression)
+  (|>> (_.+ (_.int +1))))
+
+(def: (product_element product index)
+  (-> Expression Expression Expression)
+  (|> product (_.nth (|> index (_.+ (_.int +1))))))
+
+(def: (product_tail product)
+  (-> SVar Expression)
+  (|> product (_.nth (_.length product))))
+
+(def: (updated_index min_length product)
+  (-> Expression Expression Expression)
+  (|> min_length (_.- (_.length product))))
+
+(runtime: (tuple::left index product)
+  (let [$index_min_length (_.var "index_min_length")]
+    ($_ _.then
+        (_.set! $index_min_length (minimum_index_length index))
+        (_.if (|> (_.length product) (_.> $index_min_length))
+          ## No need for recursion
+          (product_element product index)
+          ## Needs recursion
+          (tuple::left (updated_index $index_min_length product)
+                       (product_tail product))))))
+
+(runtime: (tuple::right index product)
+  (let [$index_min_length (_.var "index_min_length")]
+    ($_ _.then
+        (_.set! $index_min_length (minimum_index_length index))
+        (_.cond (list [## Last element.
+                       (|> (_.length product) (_.= $index_min_length))
+                       (product_element product index)]
+                      [## Needs recursion
+                       (|> (_.length product) (_.< $index_min_length))
+                       (tuple::right (updated_index $index_min_length product)
+                                     (product_tail product))])
+                ## Must slice
+                (|> product (_.slice_from index))))))
+
+(runtime: (sum::get sum wants_last? wanted_tag)
+  (let [no_match _.null
+        sum_tag (|> sum (_.nth (_.string ..variant_tag_field)))
+        sum_flag (|> sum (_.nth (_.string ..variant_flag_field)))
+        sum_value (|> sum (_.nth (_.string ..variant_value_field)))
+        is_last? (|> sum_flag (_.= (_.string "")))
+        test_recursion (_.if is_last?
+                         ## Must recurse.
+                         (|> wanted_tag
+                             (_.- sum_tag)
+                             (sum::get sum_value wants_last?))
+                         no_match)]
+    (_.cond (list [(_.= sum_tag wanted_tag)
+                   (_.if (_.= wants_last? sum_flag)
+                     sum_value
+                     test_recursion)]
+
+                  [(|> wanted_tag (_.> sum_tag))
+                   test_recursion]
+
+                  [(|> (|> wants_last? (_.= (_.string "")))
+                       (_.and (|> wanted_tag (_.< sum_tag))))
+                   (variant' (|> sum_tag (_.- wanted_tag)) sum_flag sum_value)])
+
+            no_match)))
+
+(def: runtime::adt
+  Expression
+  ($_ _.then
+      @tuple::left
+      @tuple::right
+      @sum::get
+      ))
+
+(template [<name> <op>]
+  [(runtime: (<name> mask input)
+     (i64::new (<op> (i64_high mask)
+                     (i64_high input))
+               (<op> (i64_low mask)
+                     (i64_low input))))]
+
+  [i64::and _.bit_and]
+  [i64::or  _.bit_or]
+  [i64::xor _.bit_xor]
+  )
+
+(runtime: (i64::right_shift shift input)
+  ($_ _.then
+      (limit_shift! shift)
+      (_.cond (list (no_shift_clause shift input)
+                    [(|> shift (_.< (_.int +32)))
+                     (with_vars [$mid]
+                       (let [mid (|> (i64_high input) (_.bit_shl (|> (_.int +32) (_.- shift))))
+                             high (|> (i64_high input) (_.bit_ushr shift))
+                             low (|> (i64_low input)
+                                     (_.bit_ushr shift)
+                                     (_.bit_or (_.if (_.apply (list $mid) (_.var "is.na"))
+                                                 (_.int +0)
+                                                 $mid)))]
+                         ($_ _.then
+                             (_.set! $mid mid)
+                             (i64::new high low))))]
+                    [(|> shift (_.= (_.int +32)))
+                     (let [high (i64_high input)]
+                       (i64::new (_.int +0) high))])
+              (let [low (|> (i64_high input) (_.bit_ushr (|> shift (_.- (_.int +32)))))]
+                (i64::new (_.int +0) low)))))
+
+(def: runtime::i64
+  Expression
+  ($_ _.then
+      @i64::zero
+      @i64::one
+      @i64::min
+      @i64::max
+      @i64::=
+      @i64::<
+      @i64::+
+      @i64::-
+      @i64::negate
+      @i64::-one
+      @i64::unsigned_low
+      @i64::to_float
+      @i64::*
+      @i64::/
+      @i64::%
+
+      @i64::and
+      @i64::or
+      @i64::xor
+      @i64::not
+      @i64::left_shift
+      @i64::arithmetic_right_shift_32
+      @i64::arithmetic_right_shift
+      @i64::right_shift
+      ))
+
+(runtime: (frac::decode input)
+  (with_vars [output]
+    ($_ _.then
+        (_.set! output (_.apply (list input) (_.var "as.numeric")))
+        (_.if (|> output (_.= _.n/a))
+          ..none
+          (..some output)))))
+
+(def: runtime::frac
+  Expression
+  ($_ _.then
+      @frac::decode
+      ))
+
+(def: inc
+  (-> Expression Expression)
+  (|>> (_.+ (_.int +1))))
+
+(template [<name> <top_cmp>]
+  [(def: (<name> top value)
+     (-> Expression Expression Expression)
+     (|> (|> value (_.>= (_.int +0)))
+         (_.and (|> value (<top_cmp> top)))))]
+
+  [within? _.<]
+  [up_to?  _.<=]
+  )
+
+(def: (text_clip start end text)
+  (-> Expression Expression Expression Expression)
+  (_.apply (list text start end)
+           (_.var "substr")))
+
+(def: (text_length text)
+  (-> Expression Expression)
+  (_.apply (list text) (_.var "nchar")))
+
+(runtime: (text::index subject param start)
+  (with_vars [idx startF subjectL]
+    ($_ _.then
+        (_.set! startF (i64::to_float start))
+        (_.set! subjectL (text_length subject))
+        (_.if (|> startF (within? subjectL))
+          ($_ _.then
+              (_.set! idx (|> (_.apply_kw (list param (_.if (|> startF (_.= (_.int +0)))
+                                                        subject
+                                                        (text_clip (inc startF)
+                                                                   (inc subjectL)
+                                                                   subject)))
+                                          (list ["fixed" (_.bool #1)])
+                                          (_.var "regexpr"))
+                              (_.nth (_.int +1))))
+              (_.if (|> idx (_.= (_.int -1)))
+                ..none
+                (..some (i64::from_float (|> idx (_.+ startF))))))
+          ..none))))
+
+(runtime: (text::clip text from to)
+  (with_vars [length]
+    ($_ _.then
+        (_.set! length (_.length text))
+        (_.if ($_ _.and
+                  (|> to (within? length))
+                  (|> from (up_to? to)))
+          (..some (text_clip (inc from) (inc to) text))
+          ..none))))
+
+(def: (char_at idx text)
+  (-> Expression Expression Expression)
+  (_.apply (list (text_clip idx idx text))
+           (_.var "utf8ToInt")))
+
+(runtime: (text::char text idx)
+  (_.if (|> idx (within? (_.length text)))
+    ($_ _.then
+        (_.set! idx (inc idx))
+        (..some (i64::from_float (char_at idx text))))
+    ..none))
+
+(def: runtime::text
+  Expression
+  ($_ _.then
+      @text::index
+      @text::clip
+      @text::char
+      ))
+
+(def: (check_index_out_of_bounds array idx body)
+  (-> Expression Expression Expression Expression)
+  (_.if (|> idx (_.<= (_.length array)))
+    body
+    (_.stop (_.string "Array index out of bounds!"))))
+
+(runtime: (array::new size)
+  (with_vars [output]
+    ($_ _.then
+        (_.set! output (_.list (list)))
+        (_.set_nth! (|> size (_.+ (_.int +1)))
+                    _.null
+                    output)
+        output)))
+
+(runtime: (array::get array idx)
+  (with_vars [temp]
+    (<| (check_index_out_of_bounds array idx)
+        ($_ _.then
+            (_.set! temp (|> array (_.nth (_.+ (_.int +1) idx))))
+            (_.if (|> temp (_.= _.null))
+              ..none
+              (..some temp))))))
+
+(runtime: (array::put array idx value)
+  (<| (check_index_out_of_bounds array idx)
+      ($_ _.then
+          (_.set_nth! (_.+ (_.int +1) idx) value array)
+          array)))
+
+(def: runtime::array
+  Expression
+  ($_ _.then
+      @array::new
+      @array::get
+      @array::put
+      ))
+
+(def: runtime
+  Expression
+  ($_ _.then
+      runtime::lux
+      @f2^32
+      @f2^63
+      @i64::new
+      @i64::from_float
+      runtime::i64
+      runtime::adt
+      runtime::frac
+      runtime::text
+      runtime::array
+      runtime::io
+      ))
+
+(def: #export generate
+  (Operation [Registry Output])
+  (do ///////phase.monad
+    [_ (/////generation.execute! ..runtime)
+     _ (/////generation.save! (%.nat ..module_id) ..runtime)]
+    (wrap [(|> artifact.empty
+               artifact.resource
+               product.right)
+           (row.row [(%.nat ..module_id)
+                     (|> ..runtime
+                         _.code
+                         (\ utf8.codec encode))])])))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/structure.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/structure.lux
new file mode 100644
index 000000000..5f4703836
--- /dev/null
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/r/structure.lux
@@ -0,0 +1,39 @@
+(.module:
+  [lux #*
+   [abstract
+    ["." monad (#+ do)]]
+   [data
+    [collection
+     ["." list]]]
+   [target
+    ["_" r (#+ Expression)]]]
+  ["." // #_
+   ["#." runtime (#+ Operation Phase Generator)]
+   ["#." primitive]
+   ["///#" //// #_
+    [analysis (#+ Variant Tuple)]
+    ["#." synthesis (#+ Synthesis)]
+    ["//#" /// #_
+     ["#." phase ("#\." monad)]]]])
+
+(def: #export (tuple expression archive elemsS+)
+  (Generator (Tuple Synthesis))
+  (case elemsS+
+    #.Nil
+    (///////phase\wrap (//primitive.text /////synthesis.unit))
+
+    (#.Cons singletonS #.Nil)
+    (expression archive singletonS)
+
+    _
+    (|> elemsS+
+        (monad.map ///////phase.monad (expression archive))
+        (///////phase\map _.list))))
+
+(def: #export (variant expression archive [lefts right? valueS])
+  (Generator (Variant Synthesis))
+  (let [tag (if right?
+              (inc lefts)
+              lefts)]
+    (///////phase\map (|>> (//runtime.variant tag right?))
+                      (expression archive valueS))))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme.lux
index be476cf74..1a36df4e0 100644
--- a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme.lux
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme.lux
@@ -2,8 +2,6 @@
   [lux #*
    [abstract
     [monad (#+ do)]]
-   [control
-    ["." exception (#+ exception:)]]
    [target
     ["_" scheme]]]
   ["." / #_
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/function.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/function.lux
index 380352c5b..65c674ded 100644
--- a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/function.lux
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/function.lux
@@ -89,8 +89,7 @@
                                                      output_func_args (//runtime.slice arityO
                                                                                        (|> @num_args (_.-/2 arityO))
                                                                                        @curried)]
-                                                 (_.begin (list ## (_.display/1 (_.string (format "!!! PRE [slice]" text.new_line)))
-                                                                (|> @self
+                                                 (_.begin (list (|> @self
                                                                     (apply_poly arity_args)
                                                                     (apply_poly output_func_args))))))
                                              ## (|> @num_args (_.</2 arityO))
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/loop.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/loop.lux
index 633b0da5a..d4b964910 100644
--- a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/loop.lux
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/loop.lux
@@ -13,7 +13,7 @@
     [number
      ["n" nat]]]
    [target
-    ["_" scheme (#+ Computation Var)]]]
+    ["_" scheme]]]
   ["." // #_
    [runtime (#+ Operation Phase Generator)]
    ["#." case]
diff --git a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/runtime.lux b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/runtime.lux
index 612cb3153..7f55df9a9 100644
--- a/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/runtime.lux
+++ b/stdlib/source/lux/tool/compiler/language/lux/phase/generation/scheme/runtime.lux
@@ -11,7 +11,8 @@
     ["." product]
     ["." text ("#\." hash)
      ["%" format (#+ format)]
-     ["." encoding]]
+     [encoding
+      ["." utf8]]]
     [collection
      ["." list ("#\." functor)]
      ["." row]]]
@@ -365,4 +366,4 @@
            (row.row [(%.nat ..module_id)
                      (|> ..runtime
                          _.code
-                         (\ encoding.utf8 encode))])])))
+                         (\ utf8.codec encode))])])))
diff --git a/stdlib/source/lux/tool/compiler/meta/io/context.lux b/stdlib/source/lux/tool/compiler/meta/io/context.lux
index 6c44c026a..3bb388f5e 100644
--- a/stdlib/source/lux/tool/compiler/meta/io/context.lux
+++ b/stdlib/source/lux/tool/compiler/meta/io/context.lux
@@ -15,7 +15,8 @@
     [binary (#+ Binary)]
     ["." text ("#\." hash)
      ["%" format (#+ format)]
-     ["." encoding]]
+     [encoding
+      ["." utf8]]]
     [collection
      ["." dictionary (#+ Dictionary)]]]
    [world
@@ -127,7 +128,7 @@
       (Promise (Try Input)))
   (do (try.with promise.monad)
     [[path binary] (..find_any_source_file system import contexts partial_host_extension module)]
-    (case (\ encoding.utf8 decode binary)
+    (case (\ utf8.codec decode binary)
       (#try.Success code)
       (wrap {#////.module module
              #////.file path
diff --git a/stdlib/source/lux/tool/compiler/meta/packager/script.lux b/stdlib/source/lux/tool/compiler/meta/packager/script.lux
index e8685ce2b..c23688a9e 100644
--- a/stdlib/source/lux/tool/compiler/meta/packager/script.lux
+++ b/stdlib/source/lux/tool/compiler/meta/packager/script.lux
@@ -12,7 +12,8 @@
     ["." product]
     [text
      ["%" format (#+ format)]
-     ["." encoding]]
+     [encoding 
+      ["." utf8]]]
     [collection
      ["." row]
      ["." list ("#\." functor)]]]
@@ -49,7 +50,7 @@
       (monad.fold try.monad
                   (function (_ content so_far)
                     (|> content
-                        (\ encoding.utf8 decode)
+                        (\ utf8.codec decode)
                         (\ try.monad map
                            (function (_ content)
                              (sequence so_far
@@ -75,4 +76,4 @@
           (list\map (function (_ [module [module_id [descriptor document output]]])
                       [module_id output]))
           (monad.fold ! (..write_module sequence) header)
-          (\ ! map (|>> scope to_code (\ encoding.utf8 encode)))))))
+          (\ ! map (|>> scope to_code (\ utf8.codec encode)))))))