HEADS UP: New primops on the way

Jan Stolarek jan.stolarek at p.lodz.pl
Mon Sep 16 13:48:39 UTC 2013

There will be a major change in primops pushed into HEAD, hopefully with next 24 hours. This change breaks backwards compatibility for comparison primops and ONCE IT IS PUSHED will require you to:

1) Upgrade to latest versions of Alex and Happy (cabal update && cabal install alex happy). These versions are not yet available. When they are DO NOT INSTALL THEM UNTIL CHANGES ARE PUSHED INTO HEAD.

2) Blow away your build. Be sure to run ./configure to pick up new versions of Alex and Happy

3) Rebase your branches on top of HEAD, if these branches were in a repository affected by primop change. Repositories that will be affected: GHC, testsuite, array, base, dph, ghc-prim, integer-gmp, integer-simple, primitive, template-haskell.


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