{-# LANGUAGE NoImplicitPrelude #-}

module Stack.Options.GhcBuildParser where

import           Options.Applicative
import           Options.Applicative.Types
import           Stack.Options.Utils
import           Stack.Prelude
import           Stack.Types.CompilerBuild

-- | GHC build parser

ghcBuildParser :: Bool -> Parser CompilerBuild
ghcBuildParser :: Bool -> Parser CompilerBuild
ghcBuildParser Bool
hide =
    forall a. ReadM a -> Mod OptionFields a -> Parser a
option
        ReadM CompilerBuild
readGHCBuild
        (forall (f :: * -> *) a. HasName f => String -> Mod f a
long String
"ghc-build" forall a. Semigroup a => a -> a -> a
<> forall (f :: * -> *) a. HasMetavar f => String -> Mod f a
metavar String
"BUILD" forall a. Semigroup a => a -> a -> a
<>
         forall (f :: * -> *) a. HasCompleter f => [String] -> Mod f a
completeWith [ String
"standard"
                      , String
"gmp4"
                      , String
"nopie"
                      , String
"tinfo6"
                      , String
"tinfo6-nopie"
                      , String
"ncurses6"
                      , String
"int-native"
                      , String
"integersimple"] forall a. Semigroup a => a -> a -> a
<>
         forall (f :: * -> *) a. String -> Mod f a
help
             String
"Specialized GHC build, e.g. 'gmp4' or 'standard' (usually auto-detected)" forall a. Semigroup a => a -> a -> a
<>
         forall (f :: * -> *) a. Bool -> Mod f a
hideMods Bool
hide
        )
  where
    readGHCBuild :: ReadM CompilerBuild
readGHCBuild = do
        String
s <- ReadM String
readerAsk
        case forall (m :: * -> *). MonadThrow m => String -> m CompilerBuild
parseCompilerBuild String
s of
            Left SomeException
e -> forall a. String -> ReadM a
readerError (forall a. Show a => a -> String
show SomeException
e)
            Right CompilerBuild
v -> forall (m :: * -> *) a. Monad m => a -> m a
return CompilerBuild
v