cabal unpack --pristine

Without --pristine, cabal will update the package's cabal file if a newer
one is available in hackage. But that can break applying patches.
Especially since the new version from hackage can apparently have dos line
endings, while the version from the tarball doesn't.

standalone/android/install-haskell-packages

@@ -32,9 +32,9 @@ patched () {
 		ver="$(grep " $pkg " ../cabal.config | cut -d= -f 3 | sed 's/,$//')"
 	fi
 	if [ -z "$ver" ]; then
-		cabal unpack $pkg
+		cabal unpack --pristine $pkg
 	else
-		cabal unpack $pkg-$ver
+		cabal unpack --pristine $pkg-$ver
 	fi
 	cd $pkg*
 	git init

standalone/linux/install-haskell-packages

@@ -28,9 +28,9 @@ patched () {
                 ver="$(grep " $pkg " ../cabal.config | cut -d= -f 3 | sed 's/,$//')"
         fi
         if [ -z "$ver" ]; then
-                cabal unpack $pkg
+                cabal unpack --pristine $pkg
         else
-                cabal unpack $pkg-$ver
+                cabal unpack --pristine $pkg-$ver
         fi
 	cd $pkg*
 	git init