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make_travis_yml.hs
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/
make_travis_yml.hs
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#!/usr/bin/env runghc
-- NB: This code deliberately avoids relying on non-standard packages
import Control.Monad
import Data.List
import Data.Version
import System.Environment
import System.Exit
import System.IO
import Distribution.PackageDescription.Parse (readPackageDescription)
import Distribution.PackageDescription (packageDescription, testedWith)
import Distribution.Compiler (CompilerFlavor(..))
import Distribution.Version
import Distribution.Text
putStrLnErr :: String -> IO ()
putStrLnErr m = hPutStrLn stderr ("*ERROR* " ++ m) >> exitFailure
putStrLnWarn :: String -> IO ()
putStrLnWarn m = hPutStrLn stderr ("*WARNING* " ++ m)
putStrLnInfo :: String -> IO ()
putStrLnInfo m = hPutStrLn stderr ("*INFO* " ++ m)
main :: IO ()
main = do
args <- getArgs
case args of
(cabfn:xpkgs) -> do genTravisFromCabalFile cabfn xpkgs
_ -> putStrLnErr (unlines $ [ "expected .cabal file as command-line argument"
, "Usage: make_travis_yml.hs <cabal-file> <extra-apt-packages...>"
, ""
, "Example: make_travis_yml.hs someProject.cabal alex-3.1.4 liblzma-dev > .travis.yml"
])
genTravisFromCabalFile :: FilePath -> [String] -> IO ()
genTravisFromCabalFile fn xpkgs = do
gpd <- readPackageDescription maxBound fn
let compilers = testedWith $ packageDescription $ gpd
let unknownComps = nub [ c | (c,_) <- compilers, c /= GHC ]
ghcVerConstrs = [ vc | (GHC,vc) <- compilers ]
ghcVerConstrs' = simplifyVersionRange $ foldr unionVersionRanges noVersion ghcVerConstrs
when (null compilers) $ do
putStrLnErr "empty or missing 'tested-with:' definition in .cabal file"
unless (null unknownComps) $ do
putStrLnWarn $ "ignoring unsupported compilers mentioned in tested-with: " ++ show unknownComps
when (null ghcVerConstrs) $ do
putStrLnErr "'tested-with:' doesn't mention any 'GHC' version"
when (isNoVersion ghcVerConstrs') $ do
putStrLnErr "'tested-with:' describes an empty version range for 'GHC'"
when (isAnyVersion ghcVerConstrs') $ do
putStrLnErr "'tested-with:' allows /any/ 'GHC' version"
let testedGhcVersions = filter (`withinRange` ghcVerConstrs') knownGhcVersions
when (null testedGhcVersions) $ do
putStrLnErr "no known GHC version is allowed by the 'tested-with' specification"
putStrLnInfo $ "Generating Travis-CI config for testing for GHC versions: " ++ (unwords $ map disp' $ testedGhcVersions)
----------------------------------------------------------------------------
-- travis.yml generation starts here
putStrLn "# This file has been generated -- see https://github.com/hvr/multi-ghc-travis"
putStrLn "language: c"
putStrLn "sudo: false"
putStrLn ""
putStrLn "cache:"
putStrLn " directories:"
putStrLn " - $HOME/.cabsnap"
putStrLn " - $HOME/.cabal/packages"
putStrLn ""
putStrLn "before_cache:"
putStrLn " - rm -fv $HOME/.cabal/packages/hackage.haskell.org/build-reports.log"
putStrLn " - rm -fv $HOME/.cabal/packages/hackage.haskell.org/00-index.tar"
putStrLn ""
putStrLn "matrix:"
putStrLn " include:"
forM_ testedGhcVersions $ \gv -> do
let cvs = disp' (lookupCabVer gv)
gvs = disp' gv
ghcopts = if gv >= Version [7,10,0] []
then ""
else "-Werror"
xpkgs' = concatMap (',':) xpkgs
putStrLn $ concat [ " - env: CABALVER=", cvs, " GHCVER=", gvs,
" GHCOPTS=", ghcopts]
putStrLn $ concat [ " compiler: \": #GHC ", gvs, "\"" ]
putStrLn $ concat [ " addons: {apt: {packages: [cabal-install-", cvs, ",ghc-", gvs, xpkgs'
, "], sources: [hvr-ghc]}}" ]
return ()
let headGhcVers = filter isHead testedGhcVersions
unless (null headGhcVers) $ do
putStrLn ""
putStrLn " allow_failures:"
forM_ headGhcVers $ \gv -> do
let cvs = disp' (lookupCabVer gv)
gvs = disp' gv
putStrLn $ concat [ " - env: CABALVER=", cvs, " GHCVER=", gvs ]
putStrLn ""
putStrLn "before_install:"
putStrLn " - unset CC"
putStrLn " - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH"
putStrLn ""
putStr $ unlines
[ "install:"
, " - 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 --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 $HOME/.cabsnap/;"
, " fi"
, ""
, "# Here starts the actual work to be performed for the package under test;"
, "# any command which exits with a non-zero exit code causes the build to fail."
, "script:"
, " - if [ -f configure.ac ]; then autoreconf -i; fi"
, " - cabal configure --enable-tests --enable-benchmarks -v2 # -v2 provides useful information for debugging"
, " - cabal build --ghc-options=$GHCOPTS # this builds all libraries and executables (including tests/benchmarks)"
, " - cabal test"
, " - cabal check"
, "# Test that a source-distribution can be generated"
, "# (with cabal >= 1.18 'cabal sdist' would work too):"
, " - ./dist/setup/setup sdist"
, ""
, "# 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\")"
, ""
, "# EOF"
]
return ()
where
knownGhcVersions :: [Version]
knownGhcVersions = fmap (`Version` [])
[ [7,0,1], [7,0,2], [7,0,3], [7,0,4]
, [7,2,1], [7,2,2]
, [7,4,1], [7,4,2]
, [7,6,1], [7,6,2], [7,6,3]
, [7,8,1], [7,8,2], [7,8,3], [7,8,4]
, [7,10,1], [7,10,2]
, [7,11] -- HEAD
]
lookupCabVer :: Version -> Version
lookupCabVer (Version (x:y:_) _) = maybe (error "internal error") id $ lookup (x,y) cabalVerMap
where
cabalVerMap = fmap (fmap (`Version` []))
[ ((7, 0), [1,16])
, ((7, 2), [1,16])
, ((7, 4), [1,16])
, ((7, 6), [1,16])
, ((7, 8), [1,18])
, ((7,10), [1,22])
, ((7,11), [1,23]) -- HEAD
]
isHead (Version (_:y:_) _) = odd (y :: Int)
disp' v | isHead v = "head"
| otherwise = display v