d64917ad17
* There now is full support for building Haskell packages as shared libraries
for GHC versions 7.4.2 or later. The Cabal builder recognizes the following
attributes:
- enableSharedLibraries configures Cabal to build of shared libraries in
addition to static ones. This option requires that all dependencies of
the package have been compiled for use in shared libraries, too.
- enableSharedExecutables configures Cabal to prefer shared libraries when
linking executables.
The default values for these attributes are arguments to the haskellPackages
expression.
* Haskell builds now run in a LANG="en_US.UTF-8" environment to avoid plenty
of build and test suite errors. Without this setting, GHC seems unable to
deal with the UTF-8 character encoding that's generally considered standard
in the Haskell world.
* The Cabal builder supports a new attribute 'testTarget' to specify the exact
set of tests to be run during the check phase.
* The ghc-wrapper attribute ghcVersion has been removed. Instead, we use the
ghc.version attribute, which exists in unwrapped GHC derivations, too.
235 lines
10 KiB
Nix
235 lines
10 KiB
Nix
# generic builder for Cabal packages
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{ stdenv, fetchurl, lib, pkgconfig, ghc, Cabal, jailbreakCabal, glibcLocales
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, enableLibraryProfiling ? false
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, enableSharedLibraries ? false
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, enableSharedExecutables ? false
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, enableCheckPhase ? stdenv.lib.versionOlder "7.4" ghc.version
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}:
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let
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enableFeature = stdenv.lib.enableFeature;
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versionOlder = stdenv.lib.versionOlder;
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optional = stdenv.lib.optional;
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optionals = stdenv.lib.optionals;
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optionalString = stdenv.lib.optionalString;
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filter = stdenv.lib.filter;
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in
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# Cabal shipped with GHC 6.12.4 or earlier doesn't know the "--enable-tests configure" flag.
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assert enableCheckPhase -> versionOlder "7" ghc.version;
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# GHC prior to 7.4.x doesn't know the "--enable-executable-dynamic" flag.
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assert enableSharedExecutables -> versionOlder "7.4" ghc.version;
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# Our GHC 6.10.x builds do not provide sharable versions of their core libraries.
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assert enableSharedLibraries -> versionOlder "6.12" ghc.version;
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{
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mkDerivation =
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args : # arguments for the individual package, can modify the defaults
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let # These attributes are removed in the end. This is in order not to spoil the build
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# environment overly, but also to keep hash-backwards-compatible with the old cabal.nix.
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internalAttrs = [
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"internalAttrs" "buildDepends" "buildTools" "extraLibraries" "pkgconfigDepends"
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"isLibrary" "isExecutable" "testDepends"
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];
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# Stuff happening after the user preferences have been processed. We remove
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# internal attributes and strip null elements from the dependency lists, all
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# in the interest of keeping hashes stable.
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postprocess =
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x : (removeAttrs x internalAttrs) // {
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buildInputs = filter (y : ! (y == null)) x.buildInputs;
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propagatedBuildInputs = filter (y : ! (y == null)) x.propagatedBuildInputs;
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doCheck = enableCheckPhase && x.doCheck;
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};
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defaults =
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self : { # self is the final version of the attribute set
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# pname should be defined by the client to be the package basename
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# version should be defined by the client to be the package version
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# fname is the internal full name of the package
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fname = "${self.pname}-${self.version}";
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# name is the external full name of the package; usually we prefix
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# all packages with haskell- to avoid name clashes for libraries;
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# if that is not desired (for applications), name can be set to
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# fname.
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name = if self.isLibrary then
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if enableLibraryProfiling && self.enableSharedLibraries then
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"haskell-${self.pname}-ghc${ghc.ghc.version}-${self.version}-profiling-shared"
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else if enableLibraryProfiling && !self.enableSharedLibraries then
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"haskell-${self.pname}-ghc${ghc.ghc.version}-${self.version}-profiling"
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else if !enableLibraryProfiling && self.enableSharedLibraries then
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"haskell-${self.pname}-ghc${ghc.ghc.version}-${self.version}-shared"
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else
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"haskell-${self.pname}-ghc${ghc.ghc.version}-${self.version}"
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else
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"${self.pname}-${self.version}";
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# the default download location for Cabal packages is Hackage,
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# you still have to specify the checksum
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src = fetchurl {
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# cannot use mirrors system because of subtly different directory structures
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urls = ["http://hackage.haskell.org/packages/archive/${self.pname}/${self.version}/${self.fname}.tar.gz"
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"http://hdiff.luite.com/packages/archive/${self.pname}/${self.fname}.tar.gz"];
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inherit (self) sha256;
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};
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# default buildInputs are just ghc, if more buildInputs are required
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# buildInputs can be extended by the client by using extraBuildInputs,
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# but often propagatedBuildInputs is preferable anyway
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buildInputs = [ghc Cabal] ++ self.extraBuildInputs;
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extraBuildInputs = self.buildTools ++
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(optionals self.doCheck self.testDepends) ++
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(if self.pkgconfigDepends == [] then [] else [pkgconfig]) ++
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(if self.isLibrary then [] else self.buildDepends ++ self.extraLibraries ++ self.pkgconfigDepends);
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# we make sure that propagatedBuildInputs is defined, so that we don't
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# have to check for its existence
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propagatedBuildInputs = if self.isLibrary then self.buildDepends ++ self.extraLibraries ++ self.pkgconfigDepends else [];
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# library directories that have to be added to the Cabal files
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extraLibDirs = [];
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# build-depends Cabal field
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buildDepends = [];
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# build-depends Cabal fields stated in test-suite stanzas
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testDepends = [];
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# target(s) passed to the cabal test phase as an argument
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testTarget = "";
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# build-tools Cabal field
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buildTools = [];
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# extra-libraries Cabal field
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extraLibraries = [];
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# pkgconfig-depends Cabal field
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pkgconfigDepends = [];
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isLibrary = ! self.isExecutable;
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isExecutable = false;
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# ignore version restrictions on the build inputs that the cabal file might specify
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jailbreak = false;
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# pass the '--enable-split-objs' flag to cabal in the configure stage
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enableSplitObjs = !( stdenv.isDarwin # http://hackage.haskell.org/trac/ghc/ticket/4013
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|| versionOlder "7.6.99" ghc.version # -fsplit-ojbs is broken in 7.7 snapshot
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);
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# pass the '--enable-tests' flag to cabal in the configure stage
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# and run any regression test suites the package might have
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doCheck = enableCheckPhase;
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# pass the '--enable-shared' flag to cabal in the configure
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# stage to enable building shared libraries
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inherit enableSharedLibraries;
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# pass the '--enable-executable-dynamic' flag to cabal in
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# the configure stage to enable linking shared libraries
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inherit enableSharedExecutables;
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extraConfigureFlags = [
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(enableFeature self.enableSplitObjs "split-objs")
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(enableFeature enableLibraryProfiling "library-profiling")
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(enableFeature self.enableSharedLibraries "shared")
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(optional (versionOlder "7.4" ghc.version) (enableFeature self.enableSharedExecutables "executable-dynamic"))
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(optional (versionOlder "7" ghc.version) (enableFeature self.doCheck "tests"))
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];
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# GHC needs the locale configured during the Haddock phase.
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LANG = "en_US.UTF-8";
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LOCALE_ARCHIVE = optionalString stdenv.isLinux "${glibcLocales}/lib/locale/locale-archive";
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# compiles Setup and configures
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configurePhase = ''
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eval "$preConfigure"
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${optionalString self.jailbreak "${jailbreakCabal}/bin/jailbreak-cabal ${self.pname}.cabal"}
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for i in Setup.hs Setup.lhs; do
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test -f $i && ghc --make $i
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done
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for p in $extraBuildInputs $propagatedNativeBuildInputs; do
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if [ -d "$p/lib/ghc-${ghc.ghc.version}/package.conf.d" ]; then
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# Haskell packages don't need any extra configuration.
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continue;
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fi
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if [ -d "$p/include" ]; then
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extraConfigureFlags+=" --extra-include-dirs=$p/include"
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fi
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for d in lib{,64}; do
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if [ -d "$p/$d" ]; then
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extraConfigureFlags+=" --extra-lib-dirs=$p/$d"
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fi
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done
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done
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echo "configure flags: $extraConfigureFlags $configureFlags"
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./Setup configure --verbose --prefix="$out" --libdir='$prefix/lib/$compiler' --libsubdir='$pkgid' $extraConfigureFlags $configureFlags
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eval "$postConfigure"
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'';
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# builds via Cabal
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buildPhase = ''
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eval "$preBuild"
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./Setup build
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export GHC_PACKAGE_PATH=$(${ghc.GHCPackages})
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test -n "$noHaddock" || ./Setup haddock
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eval "$postBuild"
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'';
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checkPhase = optional self.doCheck ''
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eval "$preCheck"
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./Setup test ${self.testTarget}
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eval "$postCheck"
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'';
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# installs via Cabal; creates a registration file for nix-support
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# so that the package can be used in other Haskell-builds; also
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# adds all propagated build inputs to the user environment packages
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installPhase = ''
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eval "$preInstall"
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./Setup copy
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ensureDir $out/bin # necessary to get it added to PATH
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local confDir=$out/lib/ghc-${ghc.ghc.version}/package.conf.d
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local installedPkgConf=$confDir/${self.fname}.installedconf
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local pkgConf=$confDir/${self.fname}.conf
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ensureDir $confDir
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./Setup register --gen-pkg-config=$pkgConf
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if test -f $pkgConf; then
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echo '[]' > $installedPkgConf
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GHC_PACKAGE_PATH=$installedPkgConf ghc-pkg --global register $pkgConf --force
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fi
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if test -f $out/nix-support/propagated-native-build-inputs; then
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ln -s $out/nix-support/propagated-native-build-inputs $out/nix-support/propagated-user-env-packages
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fi
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eval "$postInstall"
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'';
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# We inherit stdenv and ghc so that they can be used
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# in Cabal derivations.
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inherit stdenv ghc;
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};
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in stdenv.mkDerivation (postprocess ((rec { f = defaults f // args f; }).f)) ;
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}
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