switch to universum prelude

also don't keep adjusted maps around if not necessary

2 files changed, 15 insertions, 19 deletions

diff --git a/src/Main.hs b/src/Main.hs
index beee091..d2546f5 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -6,18 +6,15 @@
 
 module Main where
 
-import           Control.Monad            (unless, when)
-import           Control.Monad.Identity   (Identity)
+import           Universum
+
 import           Data.Aeson               (eitherDecode, encode)
 import           Data.Aeson.Encode.Pretty (encodePretty)
 import           Data.Aeson.KeyMap        (coercionToHashMap)
 import qualified Data.ByteString.Lazy     as LB
-import           Data.Maybe               (fromMaybe)
 import qualified Data.Text.Encoding       as T
 import qualified Data.Text.IO             as T
-import           System.Exit              (ExitCode (..), exitWith)
-import           System.IO                (hPutStrLn, stderr)
-import           WithCli                  (Generic, HasArguments, withCli)
+import           WithCli                  (HasArguments, withCli)
 
 import           CheckDir                 (recursiveCheckDir, resultIsFatal)
 import           LintConfig               (LintConfig (..), patchConfig)
@@ -25,6 +22,7 @@ import           Types                    (Level (..))
 import           Util                     (printPretty)
 import           WriteRepo                (writeAdjustedRepository)
 
+import           System.Exit              (ExitCode (ExitFailure, ExitSuccess))
 import qualified Version                  as V (version)
 
 -- | the options this cli tool can take
@@ -58,7 +56,7 @@ run options = do
 
   when (version options) $ do
     putStrLn V.version
-    exitWith ExitSuccess
+    exitSuccess
 
   let repo = fromMaybe "." (repository options)
   let entry = fromMaybe "main.json" (entrypoint options)
@@ -68,7 +66,7 @@ run options = do
     Nothing -> error "Need a config file!"
     Just path -> LB.readFile path >>= \res ->
       case eitherDecode res :: Either String (LintConfig Identity) of
-        Left err   -> error $ "config file invalid: " <> err
+        Left err   -> error $ "config file invalid: " <> toText err
         Right file -> pure (patchConfig file (config options))
 
   lints <- recursiveCheckDir lintconfig repo entry
@@ -79,16 +77,14 @@ run options = do
     else printPretty (level, lints)
 
   case out options of
-    Nothing -> exitWith $ case resultIsFatal lintconfig lints of
-      False -> ExitSuccess
-      True  -> ExitFailure 1
+    Nothing -> exitWith $ if resultIsFatal lintconfig lints then ExitFailure 1 else ExitSuccess
     Just outpath -> do
       c <- writeAdjustedRepository lintconfig repo outpath lints
       unless (json options) $
         case c of
-          ExitFailure 1 -> putStrLn "\nMap failed linting!"
-          ExitFailure 2 -> putStrLn "\nOutpath already exists, not writing anything."
-          _ -> pure ()
+          ExitFailure 1 -> putTextLn "\nMap failed linting!"
+          ExitFailure 2 -> putTextLn "\nOutpath already exists, not writing anything."
+          _ -> pass
       exitWith c
 
 
@@ -107,10 +103,10 @@ printLB a = T.putStrLn $ T.decodeUtf8 $ LB.toStrict a
 aesonWarning :: IO ()
 aesonWarning = case coercionToHashMap of
   Just _ -> hPutStrLn stderr
-    "Warning: this program was compiled using an older version of the Aeson Library\n\
+    ("Warning: this program was compiled using an older version of the Aeson Library\n\
     \used for parsing JSON, which is susceptible to hash flooding attacks.\n\
     \n\
     \Recompiling with a newer version is recommended when handling untrusted inputs.\n\
     \n\
-    \See https://cs-syd.eu/posts/2021-09-11-json-vulnerability for details."
-  _ -> pure ()
+    \See https://cs-syd.eu/posts/2021-09-11-json-vulnerability for details." :: Text)
+  _ -> pass
diff --git a/src/Version.hs b/src/Version.hs
index c0f7edf..2ec1537 100644
--- a/src/Version.hs
+++ b/src/Version.hs
@@ -3,10 +3,10 @@
 
 module Version ( version ) where
 
-import           Control.Monad.Trans (liftIO)
+import           Universum
+
 import qualified Language.Haskell.TH as TH
 import           System.Process      (readProcess)
-import GHC.IO (catchAny)
 
 version :: String
 version = "walint rc3 2021 (" <>