Ask Travis to use ghc 7.10 snapshots.

.travis.yml

@@ -1,14 +1,14 @@
 matrix:
   allow_failures:
-    - env: GHCVER=head
+    - env: CABALVER=head GHCVER=head
+    - env: CABALVER=1.22 GHCVER=7.10.1
     - env: HPVER=2013.2.0.0
 
 env:
- - GHCVER=7.6.3
- - GHCVER=7.8.1
- - GHCVER=7.8.2
- - GHCVER=7.8.3
- - GHCVER=head
+ - CABALVER=1.18 GHCVER=7.6.3
+ - CABALVER=1.20 GHCVER=7.8.3
+ - CABALVER=1.22 GHCVER=7.10.1
+ - CABALVER=head GHCVER=head
  - HPVER=2013.2.0.0
 
 before_install:
@@ -17,6 +17,7 @@ before_install:
 
     "2013.2.0.0")
       export GHCVER=7.6.3 ;
+      export CABALVER=1.18 ;
       echo "constraints:async==2.0.1.4,attoparsec==0.10.4.0,case-insensitive==1.0.0.1,cgi==3001.1.7.5,fgl==5.4.2.4,GLUT==2.4.0.0,GLURaw==1.3.0.0,haskell-src==1.0.1.5,hashable==1.1.2.5,html==1.0.1.2,HTTP==4000.2.8,HUnit==1.2.5.2,mtl==2.1.2,network==2.4.1.2,OpenGL==2.8.0.0,OpenGLRaw==1.3.0.0,parallel==3.2.0.3,parsec==3.1.3,QuickCheck==2.6,random==1.0.1.1,regex-base==0.93.2,regex-compat==0.95.1,regex-posix==0.95.2,split==0.2.2,stm==2.4.2,syb==0.4.0,text==0.11.3.1,transformers==0.3.0.0,unordered-containers==0.2.3.0,vector==0.10.0.1,xhtml==3000.2.1,zlib==0.5.4.1" > cabal.config ;;
 
     *)
@@ -30,19 +31,19 @@ before_install:
  - cp cabal.config yi
  - sudo add-apt-repository -y ppa:hvr/ghc
  - sudo apt-get update
- - sudo apt-get install cabal-install-1.20 ghc-$GHCVER libicu-dev
+ - sudo apt-get install cabal-install-$CABALVER ghc-$GHCVER libicu-dev
  - export PATH=/opt/ghc/$GHCVER/bin:$PATH
 
 install:
- - cabal-1.20 update
- - travis_retry cabal-1.20 install Cabal
- - travis_retry cabal-1.20 install -j2 alex happy
- - travis_retry cabal-1.20 install -j2 gtk2hs-buildtools
+ - cabal-$CABALVER update
+ - travis_retry cabal-$CABALVER install Cabal
+ - travis_retry cabal-$CABALVER install -j2 alex happy
+ - travis_retry cabal-$CABALVER install -j2 gtk2hs-buildtools
 
 script:
- - travis_retry cabal-1.20 install -j2 -fpango --enable-tests -ftesting --only-dependencies --reorder-goals --force-reinstalls
- - cabal-1.20 install -j1 -fpango --enable-tests -ftesting
- - cabal-1.20 test
+ - travis_retry cabal-$CABALVER install -j2 -fpango --enable-tests -ftesting --only-dependencies --reorder-goals --force-reinstalls
+ - cabal-$CABALVER install -j1 -fpango --enable-tests -ftesting
+ - cabal-$CABALVER test
  # - cd ../yi/example-configs
  # - for config in yi-*.hs;
  #   do