pretty-show-1.6.10 build failure with GHC 7.10.2 and happy-1.18.9

yav / pretty-show

Tools for working with derived Show instances in Haskell.

MIT License

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pretty-show-1.6.10 build failure with GHC 7.10.2 and happy-1.18.9 #19

Closed peti closed 8 years ago

peti commented 8 years ago

I tried to compile a project of mine on Travis-CI with GHC 7.10.2 and the build ended up failing during the build of pretty-show: https://travis-ci.org/NixOS/cabal2nix/jobs/137826448#L1012. I'm not sure what to make of this, especially since other compiler versions don't seem to have this issue. Do you have any idea what might cause this error?

danr commented 8 years ago

The happy version used is too old. I don't know exactly what version is needed, but the one that's used in the build is not aware of unboxed booleans, https://ghc.haskell.org/trac/ghc/ticket/6135

peti commented 8 years ago

OK, thanks for the quick response!