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Support for stack #1

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27 changes: 19 additions & 8 deletions src/Main.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ import Data.Tuple (swap)
import Data.Void
import GHC.Generics (Generic)
import Prelude hiding (takeWhile)
import System.IO (stderr, hPutStrLn)
import System.IO (stderr, hPutStrLn, hSetEncoding, utf8)

-- containers
import Data.Set (Set)
Expand Down Expand Up @@ -91,6 +91,7 @@ data Options = Options
{ overwrite :: Bool
, localModulesFromCurrentDir :: Bool
, reportProgress :: Bool
, useStack :: Bool
, filePaths :: [String]
}

Expand All @@ -117,6 +118,13 @@ options = do
& mconcat
& Options.switch

useStack <-
[ Options.long "use-stack"
, Options.help "Run with support for stack."
]
& mconcat
& Options.switch

filePaths <-
[ Options.metavar "FILES..."
, Options.help "The files whose imports will be grouped"
Expand Down Expand Up @@ -153,14 +161,15 @@ groupFileImports
, localModulesFromCurrentDir
, reportProgress
, filePaths
, useStack
} = do

when
reportProgress
(liftIO $ putStrLn $ "processing " ++ show (length filePaths) ++ " number of files.")

globalModulesFromAllGhcPackages <-
liftIO getPackageModulesFromGhcDump
liftIO (getPackageModulesFromGhcDump useStack)
<* when
reportProgress
(liftIO $ putStrLn "got all exposed modules from GHC package set")
Expand Down Expand Up @@ -781,12 +790,14 @@ parseCabalDependencies = do
)
) <?> "package name"

getPackageModulesFromGhcDump :: IO (MonoidalMap ModuleName (NESet PackageSource))
getPackageModulesFromGhcDump = do
(_, hOut, _, _) <-
runInteractiveCommand "ghc-pkg dump"
Text.hGetContents hOut
<&> parse parsePackageDump ""
getPackageModulesFromGhcDump :: Bool -> IO (MonoidalMap ModuleName (NESet PackageSource))
getPackageModulesFromGhcDump useStack' = do
(_hIn, hOut, _hErr, _) <-
runInteractiveCommand (if useStack'
then "stack exec ghc-pkg dump"
else "ghc-pkg dump")
hSetEncoding hOut utf8
Text.hGetContents hOut <&> parse parsePackageDump ""
>>= \case
Left e ->
putStrLn
Expand Down