diff options
Diffstat (limited to 'src/Main.hs')
| -rw-r--r-- | src/Main.hs | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/src/Main.hs b/src/Main.hs index 4a38b8eb..a676d9a8 100644 --- a/src/Main.hs +++ b/src/Main.hs @@ -155,21 +155,7 @@ main = handleTopExceptions $ do if not (null fileArgs) then do - libDir <- case getGhcLibDir flags of - Just dir -> return dir - Nothing -> -#ifdef IN_GHC_TREE - do m <- getExecDir - case m of - Nothing -> error "No GhcLibDir found" -#ifdef NEW_GHC_LAYOUT - Just d -> return (d </> ".." </> "lib") -#else - Just d -> return (d </> "..") -#endif -#else - return libdir -- from GHC.Paths -#endif + libDir <- getGhcLibDir flags #if __GLASGOW_HASKELL__ >= 609 -- We have one global error handler for all GHC source errors. Other kinds @@ -415,11 +401,23 @@ startGhc libDir flags = do ------------------------------------------------------------------------------- -getGhcLibDir :: [Flag] -> Maybe String -getGhcLibDir flags = +getGhcLibDir :: [Flag] -> IO String +getGhcLibDir flags = do case [ dir | Flag_GhcLibDir dir <- flags ] of - [] -> Nothing - xs -> Just $ last xs + [] -> +#ifdef IN_GHC_TREE + do m <- getExecDir + case m of + Nothing -> error "No GhcLibDir found" +#ifdef NEW_GHC_LAYOUT + Just d -> return (d </> ".." </> "lib") +#else + Just d -> return (d </> "..") +#endif +#else + return libdir -- from GHC.Paths +#endif + xs -> return $ last xs getVerbosity :: Monad m => [Flag] -> m Verbosity |