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make_travis_yml_2.hs
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make_travis_yml_2.hs
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#!/usr/bin/env runghc
-- | New-style @.travis.yml@ script generator using cabal 1.24's nix-style
-- tech-preview facilities.
--
-- See also <https://github.com/hvr/multi-ghc-travis>
--
-- NB: This code deliberately avoids relying on non-standard packages
-- is expected to compile/work with at least GHC 7.0 through GHC 8.0
import Control.Monad
import Data.List
import System.Environment
import System.Exit
import System.IO
import Distribution.Compiler (CompilerFlavor(..))
import Distribution.PackageDescription (packageDescription, testedWith)
import Distribution.PackageDescription.Parse (readPackageDescription)
import Distribution.Text
import Distribution.Version
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_2.hs <cabal-file> <extra-apt-packages...>"
, ""
, "Example: make_travis_yml_2.hs someProject.cabal alex-3.1.7 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 by `make_travis_yml_2.hs`"
putStrLn "# see https://github.com/hvr/multi-ghc-travis for more information"
putStrLn "language: c"
putStrLn "sudo: false"
putStrLn ""
putStrLn "cache:"
putStrLn " directories:"
putStrLn " - $HOME/.cabal/packages"
putStrLn " - $HOME/.cabal/store"
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
xpkgs' = concatMap (',':) xpkgs
putStrLn $ concat [ " - env: CABALVER=", cvs, " GHCVER=", gvs ]
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"
, " - BENCH=${BENCH---enable-benchmarks}"
, " - TEST=${TEST---enable-tests}"
, " - 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 new-build ${TEST} ${BENCH} --dep"
, ""
, "# 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"
, " # this builds all libraries and executables (including tests/benchmarks)"
, " - cabal new-build ${TEST} ${BENCH} -v2 # -v2 provides useful information for debugging"
, ""
, " # there's no 'cabal new-test' yet, so let's emulate for now"
, " - TESTS=( $(awk 'tolower($0) ~ /^test-suite / { print $2 }' *.cabal) );"
, " RC=true; for T in ${TESTS[@]}; do echo \"== $T ==\";"
, " if dist-newstyle/build/*/build/$T/$T; then echo \"= $T OK =\";"
, " else echo \"= $T FAILED =\"; RC=false; fi; done; $RC"
, " - cabal sdist # test that a source-distribution can be generated"
, ""
, " # Check that the resulting source distribution can be built w/o and w tests"
, " - SRC_BASENAME=$(cabal info . | awk '{print $2;exit}')"
, " - tar -C dist/ -xf dist/$SRC_BASENAME.tar.gz"
, " - \"echo 'packages: *.cabal' > dist/$SRC_BASENAME/cabal.project\""
, " - cd dist/$SRC_BASENAME/"
, " - cabal new-build --disable-tests --disable-benchmarks"
, " - rm -rf ./dist-newstyle"
, " - cabal new-build ${TEST} ${BENCH}"
, ""
, "# 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], [7,10,3]
, [8,0,1]
, [8,1] -- HEAD
]
lookupCabVer :: Version -> Version
lookupCabVer (Version (x:y:_) _) = maybe (error "internal error") id $ lookup (x,y) cabalVerMap
where
cabalVerMap = fmap (fmap (`Version` []))
[ ((7, 0), [1,24])
, ((7, 2), [1,24])
, ((7, 4), [1,24])
, ((7, 6), [1,24])
, ((7, 8), [1,24])
, ((7,10), [1,24])
, ((8, 0), [1,24])
, ((8, 1), [1,25]) -- HEAD
]
isHead (Version (_:y:_) _) = odd (y :: Int)
disp' v | isHead v = "head"
| otherwise = display v