ghc 7.8.20140130 (devel)

Closes Homebrew/homebrew#26459.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/ghc.rb

@@ -12,15 +12,36 @@ class Ghc < Formula
     sha1 '1569f19cdad2675cbff328c0e259d6b8573e9d11' => :lion
   end
 
+  option 'tests', 'Verify the build using the testsuite.'
+
+  devel do
+    # http://www.haskell.org/ghc/dist/7.8.1-rc1/README.osx.html
+    # This block should largely translate over for 7.8.1 when GM.
+    url 'http://www.haskell.org/ghc/dist/7.8.1-rc1/ghc-7.8.20140130-src.tar.bz2'
+    sha1 'b9c4d76ff71225fe58bdc4e53d7c659643463b5a'
+
+    # Upstream documentation says lion, but brew test-bot 10.7 fails.
+    depends_on :macos => :mountain_lion
+
+    resource 'binary' do
+      url 'http://www.haskell.org/ghc/dist/7.8.1-rc1/ghc-7.8.20140130-x86_64-apple-darwin-lion.tar.bz2'
+      sha1 '9026d889b160fbf56f97ec1e91576a20e5eec725'
+    end
+
+    resource 'testsuite' do
+      url 'http://www.haskell.org/ghc/dist/7.8.1-rc1/ghc-7.8.20140130-testsuite.tar.bz2'
+      sha1 '17b1d486c1111633bcfa940b9bf940194cf09bc9'
+    end
+  end
+
+  unless build.devel?
     env :std
 
     # http://hackage.haskell.org/trac/ghc/ticket/6009
     depends_on :macos => :snow_leopard
-
     depends_on 'apple-gcc42' if MacOS.version >= :mountain_lion
 
     option '32-bit'
-  option 'tests', 'Verify the build using the testsuite in Fast Mode, 5 min'
 
     # build is not available in the resource's context, so exploit the closure.
     build_32_bit = build.build_32_bit?
@@ -50,6 +71,7 @@ class Ghc < Formula
       # Fixes 7.6.3 compilation on 10.9
       DATA if MacOS.version >= :mavericks
     end
+  end
 
   def install
     # Move the main tarball contents into a subdirectory