Frankly I wouldn't be surprised if snapshots are dodgy, to be quite honest. As far as I'm aware, most people just build GHC HEAD themselves, from the git repository. And a snapshot build does not necessarily guarantee anything works in any case (there could be a million things wrong in the repository causing failures in a binary distribution you might not see in a developer build.) So, if you want to build GHC, you can. This can be done in well under an hour (or even 30 minutes) with a moderately powerful machine and paying attention to build settings. Check out the first section, 'Building GHC', here http://hackage.haskell.org/trac/ghc/wiki/Building And this page which has some good tricks for speeding up the build, like using 'mk/build.mk': http://hackage.haskell.org/trac/ghc/wiki/Building/Hacking On Mon, Jan 14, 2013 at 1:10 PM, Johannes Waldmann wrote:

Hi. I wanted to do some experiments with GHC Head but

* I cannot use the snapshot bindist:

./configure --prefix=/opt checking for path to top of build tree... ./configure: line 2138: utils/ghc-pwd/dist-install/build/tmp/ghc-pwd-bindist: No such file or directory

* I cannot compile snapshot from source (with ghc-7.6.1)

utils/haddock/src/Haddock/Convert.hs:201:42: Not in scope: data constructor `HsBang'

this is for ghc-7.7.20121213 (date Dec 21), which is the latest snapshot according to http://www.haskell.org/ghc/dist/current/dist/

what am I missing? - J.W.

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