Clean of PackageConfig

compiler/main/PackageConfig.hs

+-- |
+-- Package configuration information: essentially the interface to Cabal, with
+-- some utilities
 --
 -- (c) The University of Glasgow, 2004
 --
+module PackageConfig (
+        -- $package_naming
 
--- | Package configuration information: essentially the interface to Cabal, with some utilities
-
-{-# OPTIONS -fno-warn-tabs #-}
--- The above warning supression flag is a temporary kludge.
--- While working on this module you are encouraged to remove it and
--- detab the module (please do the detabbing in a separate patch). See
---     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
--- for details
+        -- * PackageId
+        mkPackageId, packageConfigId,
 
-module PackageConfig (
-    -- $package_naming
-    
-	-- * PackageId
-	mkPackageId, packageConfigId,
-	
-	-- * The PackageConfig type: information about a package
-	PackageConfig,
-	InstalledPackageInfo_(..), display,
-	Version(..),
-	PackageIdentifier(..),
-	defaultPackageConfig,
+        -- * The PackageConfig type: information about a package
+        PackageConfig,
+        InstalledPackageInfo_(..), display,
+        Version(..),
+        PackageIdentifier(..),
+        defaultPackageConfig,
         packageConfigToInstalledPackageInfo,
-        installedPackageInfoToPackageConfig,
-  ) where
+        installedPackageInfoToPackageConfig
+    ) where
 
 #include "HsVersions.h"
 
-import Maybes
-import Module
 import Distribution.InstalledPackageInfo
 import Distribution.ModuleName
 import Distribution.Package hiding (PackageId)
 import Distribution.Text
 import Distribution.Version
 
+import Maybes
+import Module
+
 -- -----------------------------------------------------------------------------
--- Our PackageConfig type is just InstalledPackageInfo from Cabal.  Later we
+-- Our PackageConfig type is just InstalledPackageInfo from Cabal. Later we
 -- might need to extend it with some GHC-specific stuff, but for now it's fine.
 
 type PackageConfig = InstalledPackageInfo_ Module.ModuleName
+
 defaultPackageConfig :: PackageConfig
 defaultPackageConfig = emptyInstalledPackageInfo
 
@@ -51,9 +46,9 @@ defaultPackageConfig = emptyInstalledPackageInfo
 -- $package_naming
 -- #package_naming#
 -- Mostly the compiler deals in terms of 'PackageName's, which don't
--- have the version suffix.  This is so that we don't need to know the
+-- have the version suffix. This is so that we don't need to know the
 -- version for the @-package-name@ flag, or know the versions of
--- wired-in packages like @base@ & @rts@.  Versions are confined to the
+-- wired-in packages like @base@ & @rts@. Versions are confined to the
 -- package sub-system.
 --
 -- This means that in theory you could have multiple base packages installed
@@ -88,3 +83,4 @@ installedPackageInfoToPackageConfig
                                      hiddenModules = h })) =
         pkgconf{ exposedModules = map mkModuleName e,
                  hiddenModules  = map mkModuleName h }
+