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I have the latest Haskell Platform (2012.2.0.0) 64bit OSX. But.. I have run into an issue with the 64bit compiler on Mac, which means that yesod devel crashes as soon as it starts.
I can’t swap to the 32 bit version because of completely different issues with getting GTK+ to work.
I see the issue with GHC is fixed in 7.6.1 but the latest HP comes with 7.4. So, can I install GHC 7.6 on top of my working HP installation, or is that going to screw everything up?
Yes just install it in a separate directory and remember to change your path each time you wanna use it with the different versions, or change the name of the simulink in your bin like how mac ports does i.e. for instance in my bin i have
ghc,ghc-7.4.1andghc-7.4.2which are all different versions.so in your case i would create two simulinks in /bin
ghc-32andghc-64for each of the two separate versionsAlso it is important not to forget to CHANGE YOUR INSTALL PREFIX each build, usually denoted by
--prefixwhen compiling GHC