cache full cabal

.travis.yml

@@ -22,12 +22,5 @@ script:
 
 cache:
  directories:
- - $HOME/.cabal/packages
- - $HOME/.cabal/store
- - $HOME/.cabal/bin
- - $HOME/.stack/bin
- - $HOME/.stack/precompiled
- - $HOME/.stack/programs
- - $HOME/.stack/setup-exe-cache
- - $HOME/.stack/snapshots
+ - $HOME/.cabal