Trying a different .travis.yml to see if that helps
Travis: Trying to install happy and alex explicitly
Trying .travis from haskell-src-exts
Fix compdata bounds
Use open-typerep (instead of a non-existing version of syntactic)
Removed testing on GHC 7.6
Removed everything to do with attribute grammars
Switched to compdata-0.9
Merge branch 'master' into sharing
Adapt Sharing.hs to compdata 0.9