ghc: fix build

langs/ghc/build

@@ -1,5 +1,7 @@
 #!/bin/sh -e
 
+export DESTDIR="$1"
+
 ./configure \
     --prefix="/usr" \
     --with-system-libffi \
@@ -8,10 +10,4 @@
 sed -e 's/unknown/pc/g' llvm-targets > _
 mv -f _ llvm-targets
 
-# FIXME: currently this package is broken, since we cannot specify
-# the DESTDIR. prefix here is meant to just be '/usr/' not
-# the hack we currently have.
-
-# I think that it should be possible to create a bindist, then copy
-# said bindist over to the appropriate directory
-./hadrian/build install --prefix="$1/usr" -j --flavour=quickest+no_profiled_libs --docs=none --skip-depends
+./hadrian/build install --prefix="/usr" -j --flavour=quickest+no_profiled_libs --docs=none --skip-depends