JakubOboza/gist:2309766

Created April 5, 2012 10:23

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Installing GHC 7.4.1 on 10.7 Lion

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GHC 7.4.1 on 10.7 Lion

While wait for Haskell platform i wanted to play with GHC 7.4.1 mainly because Aeson lib requires things that were added in GHC 7.2 and Haskell Platform is fixed on 7.0.4

Step one

Get haskell platform from http://hackage.haskell.org/platform/mac.html pick up 64bit version and Install it. (this will install cabal 0.8 and loads of useful tools).

Step two

Go to /Library/Frameworks/GHC.framework/Versions/Current/Tools and run sudo ./Uninstaller

Step three

Download from here http://www.haskell.org/ghc/download_ghc_7_4_1#macosx_x86_64 GHC package and install it

Profit :)

ghc -v ->

Glasgow Haskell Compiler, Version 7.4.1, stage 2 booted by GHC version 7.0.4

Good job :)

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