stop using Shellmet in Git.hs

parser-typechecker/src/Unison/Codebase/Editor/Git.hs

@@ -24,7 +24,6 @@ import Control.Monad.Except (MonadError, throwError)
 import qualified Data.ByteString.Base16 as ByteString
 import qualified Data.Char as Char
 import qualified Data.Text as Text
-import Shellmet (($?), ($^), ($|))
 import System.Exit (ExitCode (ExitSuccess))
 import System.FilePath ((</>))
 import System.IO.Unsafe (unsafePerformIO)
@@ -307,3 +306,38 @@ gitTextIn :: MonadIO m => GitRepo -> [Text] -> m Text
 gitTextIn localPath args = do
   when debugGit $ traceM (Text.unpack . Text.unwords $ ["$ git"] <> setupGitDir localPath <> args)
   liftIO $ "git" $| setupGitDir localPath <> args
+
+-- copying the Shellmet API for now; we can rename or change it up later
+
+{- | This operator runs shell command with given options but doesn't print the
+command itself.
+>>> "echo" $^ ["Foo", "Bar"]
+Foo Bar
+-}
+infix 5 $^
+($^) :: MonadIO m => FilePath -> [Text] -> m ()
+cmd $^ args = UnliftIO.callProcess cmd (map Text.unpack args)
+
+{- | Run shell command with given options and return stripped stdout of the
+executed command.
+>>> "echo" $| ["Foo", "Bar"]
+"Foo Bar"
+-}
+infix 5 $|
+($|) :: MonadIO m => FilePath -> [Text] -> m Text
+cmd $| args = post <$> UnliftIO.readProcess cmd (map Text.unpack args) stdin
+  where
+    stdin = ""
+    post = Text.strip . Text.pack
+
+{- | Do some IO actions when process failed with 'IOError'.
+>>> "exit" ["0"] $? putStrLn "Command failed"
+⚙  exit 0
+>>> "exit" ["1"] $? putStrLn "Command failed"
+⚙  exit 1
+Command failed
+-}
+infixl 4 $?
+($?) :: IO a -> IO a -> IO a
+action $? handler = action `UnliftIO.catch` \(_ :: IOError) -> handler
+{-# INLINE ($?) #-}