# This file has been generated -- see https://github.com/hvr/multi-ghc-travis
language: c
sudo: false

cache:
  directories:
    - $HOME/.cabsnap
    - $HOME/.cabal/packages

before_cache:
  - rm -fv $HOME/.cabal/packages/hackage.haskell.org/build-reports.log
  - rm -fv $HOME/.cabal/packages/hackage.haskell.org/00-index.tar

matrix:
  include:
    - env: CABALVER=1.16 GHCVER=7.4.2
      compiler: ": #GHC 7.4.2"
      addons: {apt: {packages: [cabal-install-1.16,ghc-7.4.2,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}
    - env: CABALVER=1.16 GHCVER=7.6.3
      compiler: ": #GHC 7.6.3"
      addons: {apt: {packages: [cabal-install-1.16,ghc-7.6.3,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}
    - env: CABALVER=1.18 GHCVER=7.8.4
      compiler: ": #GHC 7.8.4"
      addons: {apt: {packages: [cabal-install-1.18,ghc-7.8.4,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}
    - env: CABALVER=1.22 GHCVER=7.10.1
      compiler: ": #GHC 7.10.1"
      addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.1,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}

before_install:
 - unset CC
 - export HAPPYVER=1.19.5
 - export ALEXVER=3.1.4
 - export PATH=~/.cabal/bin:/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:/opt/happy/$HAPPYVER/bin:/opt/alex/$ALEXVER/bin:$PATH

install:
# build reflection HEAD until reflection 2.1 is on hackage
 - git clone https://github.com/ekmett/reflection.git

 - cabal --version
 - echo "$(ghc --version) [$(ghc --print-project-git-commit-id 2> /dev/null || echo '?')]"
 - if [ -f $HOME/.cabal/packages/hackage.haskell.org/00-index.tar.gz ];
   then
     zcat $HOME/.cabal/packages/hackage.haskell.org/00-index.tar.gz >
          $HOME/.cabal/packages/hackage.haskell.org/00-index.tar;
   fi
 - travis_retry cabal update
 - "sed -i  's/^jobs:.*$/jobs: 2/' $HOME/.cabal/config"
 - cabal install --only-dependencies --enable-tests --dry -v lens.cabal reflection/ > installplan.txt
 - sed -i -e '1,/^Resolving /d' installplan.txt; cat installplan.txt

# check whether current requested install-plan matches cached package-db snapshot
 - if diff -u installplan.txt $HOME/.cabsnap/installplan.txt;
   then
     echo "cabal build-cache HIT";
     rm -rfv .ghc;
     cp -a $HOME/.cabsnap/ghc $HOME/.ghc;
     cp -a $HOME/.cabsnap/lib $HOME/.cabsnap/share $HOME/.cabsnap/bin $HOME/.cabal/;
   else
     echo "cabal build-cache MISS";
     rm -rf $HOME/.cabsnap;
     mkdir -p $HOME/.ghc $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin;
     cabal install --only-dependencies --enable-tests lens.cabal reflection/;
     if [ "$GHCVER" = "7.10.1" ]; then cabal install Cabal-1.22.4.0; fi;
   fi

# snapshot package-db on cache miss
 - if [ ! -d $HOME/.cabsnap ];
   then
      echo "snapshotting package-db to build-cache";
      mkdir $HOME/.cabsnap;
      cp -a $HOME/.ghc $HOME/.cabsnap/ghc;
      cp -a $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin installplan.txt $HOME/.cabsnap/;
   fi

# NB: we don't want reflection/ to be included in the cache
 - cabal install reflection/

# 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 configure --enable-tests -v2  # -v2 provides useful information for debugging
 - cabal build   # this builds all libraries and executables (including tests)
 - cabal test
 - cabal sdist   # tests that a source-distribution can be generated

# Check that the resulting source distribution can be built & installed.
# If there are no other `.tar.gz` files in `dist`, this can be even simpler:
# `cabal install --force-reinstalls dist/*-*.tar.gz`
 - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz &&
   (cd dist && cabal install --force-reinstalls "$SRC_TGZ")

notifications:
  irc:
    channels:
      - "irc.freenode.org#haskell-lens"
    skip_join: true
    template:
      - "\x0313lens\x0f/\x0306%{branch}\x0f \x0314%{commit}\x0f %{message} \x0302\x1f%{build_url}\x0f"
# EOF