Directory package no longer needs special treatment

hadrian.cabal

@@ -89,7 +89,6 @@ executable hadrian
                        , Settings.Flavours.Quickest
                        , Settings.Packages.Base
                        , Settings.Packages.Compiler
-                       , Settings.Packages.Directory
                        , Settings.Packages.Ghc
                        , Settings.Packages.GhcCabal
                        , Settings.Packages.GhcPrim

src/Settings/Default.hs

@@ -29,7 +29,6 @@ import Settings.Builders.Make
 import Settings.Builders.Tar
 import Settings.Packages.Base
 import Settings.Packages.Compiler
-import Settings.Packages.Directory
 import Settings.Packages.Ghc
 import Settings.Packages.GhcCabal
 import Settings.Packages.GhcPrim
@@ -194,7 +193,6 @@ defaultPackageArgs :: Args
 defaultPackageArgs = mconcat
     [ basePackageArgs
     , compilerPackageArgs
-    , directoryPackageArgs
     , ghcPackageArgs
     , ghcCabalPackageArgs
     , ghcPrimPackageArgs

src/Settings/Packages/Directory.hs

-module Settings.Packages.Directory (directoryPackageArgs) where
-
-import GHC
-import Predicate
-
--- TODO: I had to define symbol __GLASGOW_HASKELL__ as otherwise directory.c is
--- effectively empty. I presume it was expected that GHC will be used for
--- compiling all C files, but I don't know why. It seems that directory.c is the
--- only file which requires special treatment when using GCC.
-directoryPackageArgs :: Args
-directoryPackageArgs = package directory ?
-    builder Cc ? arg "-D__GLASGOW_HASKELL__"