# see also 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:
# cabal 1.16's solver is too weak for GHC 7.4
    - env: CABALVER=1.22 GHCVER=7.4.2
      compiler: ": #GHC 7.4.2"
      addons: {apt: {packages: [cabal-install-1.22,ghc-7.4.2], 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], 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], sources: [hvr-ghc]}}
    - env: CABALVER=1.22 GHCVER=7.10.3
      compiler: ": #GHC 7.10.3"
      addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.3], sources: [hvr-ghc]}}
    - env: CABALVER=1.24 GHCVER=8.0.1
      compiler: ": #GHC 8.0.1"
      addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.1], sources: [hvr-ghc]}}

before_install:
 - unset CC
 - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH
 - TARGETS="hackage-security/ hackage-security-curl/ hackage-security-HTTP/ hackage-root-tool/ hackage-repo-tool/ example-client/ hackage-security-http-client/";

install:
# Compute install plan (which we use as a travis cache key)
 - 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 -v
 - sed -i 's/^jobs:/-- jobs:/' ${HOME}/.cabal/config
 - cabal install --constraint="directory installed" --constraint="bytestring installed" --only-dependencies --enable-tests --dry -v $TARGETS > 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 --constraint="directory installed" --constraint="bytestring installed" --only-dependencies --enable-tests $TARGETS;
   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

# 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:
 - cd hackage-security/
 - cabal configure --enable-tests -v2
 - cabal build
 - cabal sdist
 - cabal test
 - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz && (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
 - cd ..

 - cd hackage-security-curl/
 - cabal configure -v2
 - cabal build
 - cabal sdist
 - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz && (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
 - cd ..

 - cd hackage-security-HTTP/
 - cabal configure -v2
 - cabal build
 - cabal sdist
 - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz && (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
 - cd ..

 - cd hackage-root-tool/
 - cabal configure -v2
 - cabal build
 - cabal sdist
 - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz && (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
 - cd ..

 - cd hackage-repo-tool/
 - cabal configure -v2
 - cabal build
 - cabal sdist
 - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz && (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
 - cd ..

 - cd hackage-security-http-client/
 - cabal configure -v2
 - cabal build
 - cabal sdist
 - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz && (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
 - cd ..

 - cd example-client/
 - cabal configure -v2
 - cabal build
 - cabal sdist
 - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz && (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
 - cd ..

# EOF