8 files changed, 26 insertions, 17 deletions
diff --git a/stdlib/source/lux/cli.lux b/stdlib/source/lux/cli.lux
index 043519111..0ac9ff0bd 100644
--- a/stdlib/source/lux/cli.lux
+++ b/stdlib/source/lux/cli.lux
@@ -12,8 +12,9 @@
    [macro (#+ with-gensyms)
     ["." code]
     ["s" syntax (#+ syntax: Syntax)]]
-   [compiler
-    ["." host]]
+   [platform
+    [compiler
+     ["." host]]]
    ["." io]
    [concurrency
     ["." process]]])
@@ -28,7 +29,7 @@
   (All [a] (-> (List Text) (CLI a) (E.Error a)))
   (case (p.run inputs parser)
     (#E.Success [remaining output])
-    (case remaining
+    (case remaining 
       #.Nil
       (#E.Success output)
 
diff --git a/stdlib/source/lux/concurrency/atom.lux b/stdlib/source/lux/concurrency/atom.lux
index 2df357124..b1692b6e3 100644
--- a/stdlib/source/lux/concurrency/atom.lux
+++ b/stdlib/source/lux/concurrency/atom.lux
@@ -6,8 +6,9 @@
    ["." io (#- run)]
    [type
     abstract]
-   [compiler
-    ["." host]]
+   [platform
+    [compiler
+     ["." host]]]
    [host (#+ import:)]])
 
 (`` (for {(~~ (static host.jvm))
diff --git a/stdlib/source/lux/concurrency/process.lux b/stdlib/source/lux/concurrency/process.lux
index e63aba14d..c2b519fb4 100644
--- a/stdlib/source/lux/concurrency/process.lux
+++ b/stdlib/source/lux/concurrency/process.lux
@@ -6,8 +6,9 @@
    [data
     [collection
      ["." list]]]
-   [compiler
-    ["." host]]
+   [platform
+    [compiler
+     ["." host]]]
    ["." io (#+ IO io)]
    [host (#+ import: object)]]
   [//
diff --git a/stdlib/source/lux/concurrency/stm.lux b/stdlib/source/lux/concurrency/stm.lux
index 3c6691acc..648d86d95 100644
--- a/stdlib/source/lux/concurrency/stm.lux
+++ b/stdlib/source/lux/concurrency/stm.lux
@@ -17,10 +17,13 @@
    [type
     abstract]])
 
+(type: #export (Observer a)
+  (-> a (IO Any)))
+
 (abstract: #export (Var a)
   {#.doc "A mutable cell containing a value, and observers that will be alerted of any change to it."}
 
-  (Atom [a (List (-> a (IO Any)))])
+  (Atom [a (List (Observer a))])
 
   (def: #export (var value)
     {#.doc "Creates a new STM var, with a default value."}
diff --git a/stdlib/source/lux/control/thread.lux b/stdlib/source/lux/control/thread.lux
index f81877a2a..9aad8aca0 100644
--- a/stdlib/source/lux/control/thread.lux
+++ b/stdlib/source/lux/control/thread.lux
@@ -9,8 +9,9 @@
      ["." array (#+ Array)]]]
    [type (#+ :share)
     abstract]
-   [compiler
-    ["." host]]
+   [platform
+    [compiler
+     ["." host]]]
    [io (#+ IO)]])
 
 (type: #export (Thread ! a)
diff --git a/stdlib/source/lux/data/collection/array.lux b/stdlib/source/lux/data/collection/array.lux
index 339e4e7ca..c38ae1371 100644
--- a/stdlib/source/lux/data/collection/array.lux
+++ b/stdlib/source/lux/data/collection/array.lux
@@ -11,8 +11,9 @@
     ["." maybe]
     [collection
      ["." list ("list/." Fold<List>)]]]
-   [compiler
-    ["." host]]])
+   [platform
+    [compiler
+     ["." host]]]])
 
 (def: #export array-type-name "#Array")
 
diff --git a/stdlib/source/lux/data/text.lux b/stdlib/source/lux/data/text.lux
index 2cd6f7980..6c427f151 100644
--- a/stdlib/source/lux/data/text.lux
+++ b/stdlib/source/lux/data/text.lux
@@ -13,8 +13,9 @@
      ["." i64]]
     [collection
      ["." list ("list/." Fold<List>)]]]
-   [compiler
-    ["." host]]])
+   [platform
+    [compiler
+     ["." host]]]])
 
 (type: #export Char Nat)
 
diff --git a/stdlib/test/test/lux/data/color.lux b/stdlib/test/test/lux/data/color.lux
index 977ffcf01..5ff92e6cd 100644
--- a/stdlib/test/test/lux/data/color.lux
+++ b/stdlib/test/test/lux/data/color.lux
@@ -12,7 +12,7 @@
 (def: color
   (r.Random @.Color)
   (|> ($_ r.and r.nat r.nat r.nat)
-      (:: r.Monad<Random> map @.color)))
+      (:: r.Monad<Random> map @.from-rgb)))
 
 (def: scale
   (-> Nat Frac)
@@ -31,8 +31,8 @@
 
 (def: error-margin Frac +1.8)
 
-(def: black @.Color (@.color [0 0 0]))
-(def: white @.Color (@.color [255 255 255]))
+(def: black (@.from-rgb [0 0 0]))
+(def: white (@.from-rgb [255 255 255]))
 
 (do-template [<field>]
   [(def: (<field> color)