GHC 6.12.1

GHC is a state-of-the-art open source compiler and interactive environment for the
functional language Haskell.

This formula uses the official GHC binary package for Mac OS X.

Signed Off By: Max Howell <max@methylblue.com>

I adapted the system calls to use full paths to tools.

FileUtils is included into Formula, so I neatened that stuff up too.

1 files changed, 46 insertions, 0 deletions

diff --git a/Library/Formula/ghc.rb b/Library/Formula/ghc.rb
new file mode 100644
index 000000000..a6f9aadff
--- /dev/null
+++ b/Library/Formula/ghc.rb
@@ -0,0 +1,46 @@
+require 'formula'
+
+class PkgCurlDownloadStrategy <CurlDownloadStrategy
+  def stage
+    safe_system '/usr/sbin/pkgutil', '--expand', @tarball_path, File.basename(@url)
+    chdir
+  end
+end
+
+# Remember to update the formula for Cabal when updating this formula
+class Ghc <Formula
+  homepage 'http://haskell.org/ghc/'
+  version '6.12.1'
+  url "http://haskell.org/ghc/dist/6.12.1/GHC-#{version}-i386.pkg"
+  md5 '7f50698a6f34b978027a43fd836443e7'
+
+  skip_clean :bin #http://hackage.haskell.org/trac/ghc/ticket/2458
+
+  def download_strategy
+    # Extract files from .pkg while caching the .pkg
+    PkgCurlDownloadStrategy
+  end
+
+  def replace_all foo, bar
+    # Find all text files containing foo and replace it with bar
+    files = `/usr/bin/grep -lsIR #{foo} .`.split
+    inreplace files, foo, bar
+  end
+
+  def install
+    # Extract files from .pax.gz
+    system '/bin/pax -f ghc.pkg/Payload -p p -rz'
+    cd 'GHC.framework/Versions/612/usr'
+
+    # Fix paths
+    replace_all '/Library/Frameworks/GHC.framework/Versions/612/usr/lib/ghc-6.12.1', "#{lib}/ghc"
+    replace_all '/Library/Frameworks/GHC.framework/Versions/612/usr', prefix
+    mv 'lib/ghc-6.12.1', 'lib/ghc'
+
+    prefix.install ['bin', 'lib', 'share']
+
+    # Regenerate GHC package cache
+    rm "#{lib}/ghc/package.conf.d/package.cache"
+    system "#{bin}/ghc-pkg", 'recache', '--package-conf', "#{lib}/ghc/package.conf.d"
+  end
+end