X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fmain%2FPackageConfig.hs;h=a3fd027bb6f7d5e0f7a0672090c4362ff1ab9014;hb=527f52a72acf214994921ad36de92f934e9632da;hp=1602429f64d6b79f44b30a9fcd2c314b38cebbb9;hpb=c7c65e17b956aedbdb47b0976c8dcaa284a97945;p=ghc-hetmet.git

diff --git a/compiler/main/PackageConfig.hs b/compiler/main/PackageConfig.hs
index 1602429..a3fd027 100644
--- a/compiler/main/PackageConfig.hs
+++ b/compiler/main/PackageConfig.hs
@@ -21,7 +21,7 @@ module PackageConfig (
 
 #include "HsVersions.h"
 
-import Data.Maybe
+import Maybes
 import Module
 import Distribution.InstalledPackageInfo
 import Distribution.ModuleName
@@ -80,7 +80,7 @@ packageConfigToInstalledPackageInfo
         pkgconf{ exposedModules = map convert e,
                  hiddenModules  = map convert h }
     where convert :: Module.ModuleName -> Distribution.ModuleName.ModuleName
-          convert = fromJust . simpleParse . moduleNameString
+          convert = (expectJust "packageConfigToInstalledPackageInfo") . simpleParse . moduleNameString
 
 -- | Turn an 'InstalledPackageInfo', which contains Cabal 'Distribution.ModuleName.ModuleName's
 -- into a GHC specific 'PackageConfig' which contains GHC 'Module.ModuleName's