container travis

.travis.yml

@@ -1,12 +1,18 @@
-language: haskell
+language: c
 
-env:
-  - CABALVER=1.18 GHCVER=7.6.3
-  - CABALVER=1.18 GHCVER=7.8.4
-  - CABALVER=1.22 GHCVER=7.10.1
+sudo: false
+
+matrix:
+  include:
+    - env: CABALVER=1.18 GHCVER=7.6.3
+      addons: {apt: {packages: [cabal-install-1.18,ghc-7.6.3], sources: [hvr-ghc]}}
+    - env: CABALVER=1.18 GHCVER=7.8.4
+      addons: {apt: {packages: [cabal-install-1.18,ghc-7.8.4], sources: [hvr-ghc]}}
+    - env: CABALVER=1.22 GHCVER=7.10.2
+      addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.2], sources: [hvr-ghc]}}
 
 before_install:
- - travis_retry sudo add-apt-repository -y ppa:hvr/ghc
- - travis_retry sudo apt-get update
- - travis_retry sudo apt-get install cabal-install-$CABALVER ghc-$GHCVER
  - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH
+
+install: cabal update && cabal install --only-dependencies --enable-tests
+script: cabal configure --enable-tests && cabal build && cabal test