Travis-CI job: s/GHVER=7.8.1/GHCVER=7.8.2/g

...and exploit new `cabal-install-1.18` package installing into `/opt/cabal/1.18/bin`

.travis.yml

@@ -5,7 +5,7 @@ env:
  - GHCVER=7.0.4
  - GHCVER=7.4.2
  - GHCVER=7.6.3
- - GHCVER=7.8.1
+ - GHCVER=7.8.2
  - GHCVER=head
 
 # Note: the distinction between `before_install` and `install` is not important.
@@ -13,28 +13,28 @@ 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-1.18 ghc-$GHCVER-prof ghc-$GHCVER-dyn happy
- - export PATH=/opt/ghc/$GHCVER/bin:$PATH
+ - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/1.18/bin:$PATH
 
 install:
  - sudo /opt/ghc/$GHCVER/bin/ghc-pkg recache
  - /opt/ghc/$GHCVER/bin/ghc-pkg recache --user
- - cabal-1.18 update
+ - cabal update
  - cd Cabal
- - cabal-1.18 install --only-dependencies --enable-tests --enable-benchmarks
+ - cabal install --only-dependencies --enable-tests --enable-benchmarks
 
 # Here starts the actual work to be performed for the package under test; any command which exits with a non-zero exit code causes the build to fail.
 script:
- - cabal-1.18 configure --enable-tests --enable-benchmarks -v2  # -v2 provides useful information for debugging
- - cabal-1.18 build   # this builds all libraries and executables (including tests/benchmarks)
- - cabal-1.18 test
- - cabal-1.18 check
- - cabal-1.18 sdist   # tests that a source-distribution can be generated
+ - cabal configure --enable-tests --enable-benchmarks -v2  # -v2 provides useful information for debugging
+ - cabal build   # this builds all libraries and executables (including tests/benchmarks)
+ - cabal test
+ - cabal check
+ - cabal sdist   # tests that a source-distribution can be generated
 
 # The following scriptlet checks that the resulting source distribution can be built & installed
  - function install_from_tarball {
-   export SRC_TGZ=$(cabal-1.18 info . | awk '{print $2 ".tar.gz";exit}') ;
+   export SRC_TGZ=$(cabal info . | awk '{print $2 ".tar.gz";exit}') ;
    if [ -f "dist/$SRC_TGZ" ]; then
-      cabal-1.18 install "dist/$SRC_TGZ";
+      cabal install "dist/$SRC_TGZ";
    else
       echo "expected 'dist/$SRC_TGZ' not found";
       exit 1;
@@ -44,13 +44,13 @@ script:
 
 # Also build cabal-install.
  - cd ../cabal-install
- - cabal-1.18 sandbox init
- - cabal-1.18 sandbox add-source ../Cabal
- - cabal-1.18 install --dependencies-only
- - cabal-1.18 configure
- - cabal-1.18 build
- - cabal-1.18 check
- - cabal-1.18 sdist
+ - cabal sandbox init
+ - cabal sandbox add-source ../Cabal
+ - cabal install --dependencies-only
+ - cabal configure
+ - cabal build
+ - cabal check
+ - cabal sdist
  - install_from_tarball
 
 matrix: