alex-3.1.5 breaks gtk2hs-buildtools

[cmaeder]

the upload of alex-3.1.5 http://hackage.haskell.org/package/alex broke our travis builds https://travis-ci.org/spechub/Hets/builds

Failed to install gtk2hs-buildtools-0.13.0.4
Last 10 lines of the build log (
/home/travis/.cabal/logs/gtk2hs-buildtools-0.13.0.4.log ):
[23 of 41] Compiling CAttrs           ( c2hs/c/CAttrs.hs,
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CAttrs.o )
[24 of 41] Compiling CBuiltin         ( c2hs/c/CBuiltin.hs,
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CBuiltin.o )
[25 of 41] Compiling CParserMonad     ( c2hs/c/CParserMonad.hs,
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CParserMonad.o )
[26 of 41] Compiling CLexer           (
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CLexer.hs,
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CLexer.o )
c2hs/c/CLexer.x:400:49:
    Not in scope: ‘ord’
    Perhaps you meant one of these:
      ‘odd’ (imported from Prelude), ‘or’ (imported from Prelude),
      ‘ord#’ (imported from GHC.Exts)
cabal: Error: some packages failed to install:
gtk2hs-buildtools-0.13.0.4 failed during the building phase. The exception
was:
ExitFailure 1

Unfortunately, we still rely on the glade package that does not work with ghc-7.10

[simonmar]

Can you tell me what the differences between the .hs file generated by 3.1.4 and 3.1.5 are? It looks like perhaps you need to import Data.Char in your .x file.

[cmaeder]

I'm not responsible for gtk2hs-buildtools and cannot change it.

[cmaeder]

Did alex-3.1.4 re-export Data.Char.ord and alex-3.1.5 no longer does?

[cmaeder]

The upload of alex-3.1.6 fixed this issue!

[cmaeder]

It seems more likely that the upload of gtk2hs-buildtools-0.13.0.5 fixed our issue. (just for the record) https://github.com/gtk2hs/gtk2hs/issues/146

[cmaeder]

I've actually checked it now: not alex-3.1.6 but gtk2hs-buildtools-0.13.0.5 fixed this issue