travis: install transformers

haskell · Jan 2, 2015 · b69456a · b69456a
1 parent 4a9c4e5
commit b69456a
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -23,6 +23,7 @@ before_install:
 
 install:
  - travis_retry cabal update
+ - cabal install --only-dependencies # needed for older GHCs for transformers
 
 script:
  - cabal configure -v2