Installing GHC 7.2.2 and diagrams on OS X Lion

README.md

Installing GHC 7.2.2 and diagrams on OS X Lion

Install prerequisites

GHC 7.2.2 64-bit

Make sure you have the 64-bit version of GHC. If you installed GHC using brew install haskell-platform, you are using the 32-bit version which wont work with the instructions below. To install the 64-bit version

• Follow instructions in this gist. However, note that the patch for cabal-install that they point to is not available anymore. There is a similar patch in this gist, which worked for me. Read this comment for more info on how to apply the patch.

• You could try brew install --devel --64-bit haskell-platform, and report back here if it works for you. I have not tried it myself.

Install dependencies

• cabal install gtk2hs-buildtools
• brew install cairo gtk gettext fontconfig
• brew link cairo gettext fontconfig
• download libfreetype, unpack libfreetype, and then run ./configure ; make ; make install.
• cabal install gtk

Install Diagrams

cabal install diagrams

Test installation

Create a file called example.hs

{-# LANGUAGE NoMonomorphismRestriction #-}
import Diagrams.Prelude
import Diagrams.Backend.Cairo.CmdLine

main = defaultMain (circle 1)

On the commandline run ghc --make example.hs, and verify that the build steps succeed.