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    <p>I have two possible solutions, both of which are somewhat dangerous but should get you a working installation. I'm glad Simon's following this because it sounds like some sort of bug to me. To get a working installation, I would try the following first:</p> <pre><code>ghc-pkg unregister random </code></pre> <p>then do ghc-pkg list random to see what's installed. I would guess (but I'm not sure) that you'll still have the /Library/Frameworks version (from the Platform) but the newly-installed version will be gone. If this is the case, proceed to the next step. If it isn't you'll probably need to do a clean reinstall of the platform.</p> <p>Assuming the platform random is still present, do this:</p> <pre><code>cabal unpack random </code></pre> <p>cd to the directory it's unpacked into, and edit the .cabal file by bumping the version to 1.0.0.2.1 (add another field and increment it by one). Then cabal install from that directory and it should install the new random. Since this has a different version than the platform random, the two can safely co-exist.</p> <p>Rather than doing the ghc-pkg unregister, you can directly delete the registration file from </p> <blockquote> <p>/Users/yairc/.ghc/i386-darwin-6.12.1/package.conf.d</p> </blockquote> <p>the file name will have a hash appended to it, so you'll need to look at the directory contents to actually get the value. Just delete the file and ghc-pkg and cabal shouldn't see it from then on. This won't touch the platform installation (so it's safer in that sense), but the potential is still there to hose other installed packages. After this, you can re-install the random package by unpacking and incrementing the version as above.</p>
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    1. POmysterious cabal-install problems
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    1. COI tried something similar and at first it worked. I patched `random` and `haskell98` and the projects I'm currently working on worked fine. I decided to make a finer check that all is fine by `cabal install` ing `hlint`, `hoogle`, `darcs`, `HDBC-mysql`, `authenticate`, `hakyll` and repeating the process verifying that I reach a fixed point. In the end there was a problem with almost every single one of the packages that come with the GHC installer in the Haskell Platform.. my next attempt is disabling cabal's `user-install` option.
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    2. COa few iterations of work-around attempts after, I think that my setup finally works! I described my work-around in my answer below. Thanks!
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