Use make_travis_yml to generate .travis.yml

Author: svenpanne

.travis.yml

@@ -1,89 +1,101 @@
-# It seems that we can't use the CABALVER and GHCVER environment variables in a
-# toplevel addons.apt.packages section, so we have to duplicate things below.
+# 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=7.0.4
-     addons:
-       apt:
-         sources:
-          - hvr-ghc
-         packages:
-          - cabal-install-1.16
-          - ghc-7.0.4
-   - env: CABALVER=1.16 GHCVER=7.2.2
-     addons:
-       apt:
-         sources:
-          - hvr-ghc
-         packages:
-          - cabal-install-1.16
-          - ghc-7.2.2
-   - env: CABALVER=1.16 GHCVER=7.4.2
-     addons:
-       apt:
-         sources:
-          - hvr-ghc
-         packages:
-          - cabal-install-1.16
-          - ghc-7.4.2
-   - env: CABALVER=1.16 GHCVER=7.6.3
-     addons:
-       apt:
-         sources:
-          - hvr-ghc
-         packages:
-          - cabal-install-1.16
-          - ghc-7.6.3
-   - env: CABALVER=1.20 GHCVER=7.8.4
-     addons:
-       apt:
-         sources:
-          - hvr-ghc
-         packages:
-          - cabal-install-1.20
-          - ghc-7.8.4
-   - env: CABALVER=1.22 GHCVER=7.10.3
-     addons:
-       apt:
-         sources:
-          - hvr-ghc
-         packages:
-          - cabal-install-1.22
-          - ghc-7.10.3
-   - env: CABALVER=1.24 GHCVER=8.0.1
-     addons:
-       apt:
-         sources:
-          - hvr-ghc
-         packages:
-          - cabal-install-1.24
-          - ghc-8.0.1
-   - env: CABALVER=head GHCVER=head
-     addons:
-       apt:
-         sources:
-          - hvr-ghc
-         packages:
-          - cabal-install-head
-          - ghc-head
+    - env: CABALVER=1.16 GHCVER=7.0.4
+      compiler: ": #GHC 7.0.4"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.0.4], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.2.2
+      compiler: ": #GHC 7.2.2"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.2.2], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.4.2
+      compiler: ": #GHC 7.4.2"
+      addons: {apt: {packages: [cabal-install-1.16,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]}}
+    - env: CABALVER=head GHCVER=head
+      compiler: ": #GHC head"
+      addons: {apt: {packages: [cabal-install-head,ghc-head], sources: [hvr-ghc]}}
+
   allow_failures:
-   - env: CABALVER=head GHCVER=head
+    - env: CABALVER=head GHCVER=head
 
-sudo: false
+before_install:
+ - unset CC
+ - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH
 
-# The packages from the PPA don't put this into the PATH automatically.
 install:
- - export PATH="/opt/cabal/$CABALVER/bin:/opt/ghc/$GHCVER/bin:$PATH"
-
-before_script:
  - cabal --version
- - cabal update
- - ghc --version
- - ghc-pkg list
+ - echo "$(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 --only-dependencies --enable-tests --enable-benchmarks --dry -v > 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 --enable-benchmarks;
+   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 $HOME/.cabsnap/;
+   fi
+
+# Here starts the actual work to be performed for the package under test;
+# any command which exits with a non-zero exit code causes the build to fail.
 script:
- - cabal install --enable-documentation
- - cabal sdist
+ - if [ -f configure.ac ]; then autoreconf -i; fi
+ - cabal configure --enable-tests --enable-benchmarks --ghc-options=-Werror -v2  # -v2 provides useful information for debugging
+ - cabal build   # this builds all libraries and executables (including tests/benchmarks)
+ - cabal test
+ - cabal check
+ - cabal haddock # tests that documentation can be generated
+ - cabal sdist   # tests that a source-distribution can be generated
+
+# Check that the resulting source distribution can be built & installed.
+# If there are no other `.tar.gz` files in `dist`, this can be even simpler:
+# `cabal install --force-reinstalls dist/*-*.tar.gz`
+ - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz &&
+   (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
 
-after_script:
- - ghc-pkg list
+# EOF

StateVar.cabal

@@ -13,8 +13,19 @@ author: Sven Panne and Edward Kmett
 maintainer: Sven Panne <[email protected]>
 category: Data
 build-type: Simple
-cabal-version: >=1.10
-extra-source-files: README.md CHANGELOG.md
+cabal-version: >= 1.10
+tested-with:
+  GHC == 7.0.4
+  GHC == 7.2.2
+  GHC == 7.4.2
+  GHC == 7.6.3
+  GHC == 7.8.4
+  GHC == 7.10.3
+  GHC == 8.0.1
+  GHC == 8.1
+extra-source-files:
+  README.md
+  CHANGELOG.md
 
 library
   exposed-modules:
@@ -36,7 +47,8 @@ library
 
   hs-source-dirs: src
   ghc-options: -Wall
-
+  if impl(ghc > 8)
+    ghc-options: -Wcompat
   if impl(ghc>=7.4)
     -- other-extensions: DefaultSignatures
     cpp-options: -DUSE_DEFAULT_SIGNATURES=1