nixpkgs/pkgs/development/haskell-modules/generic-builder.nix
Artturin e0464e4788 treewide: replace stdenv.is with stdenv.hostPlatform.is
In preparation for the deprecation of `stdenv.isX`.

These shorthands are not conducive to cross-compilation because they
hide the platforms.

Darwin might get cross-compilation for which the continued usage of `stdenv.isDarwin` will get in the way

One example of why this is bad and especially affects compiler packages
https://www.github.com/NixOS/nixpkgs/pull/343059

There are too many files to go through manually but a treewide should
get users thinking when they see a `hostPlatform.isX` in a place where it
doesn't make sense.

```
fd --type f "\.nix" | xargs sd --fixed-strings "stdenv.is" "stdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "stdenv'.is" "stdenv'.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "clangStdenv.is" "clangStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "gccStdenv.is" "gccStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "stdenvNoCC.is" "stdenvNoCC.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "inherit (stdenv) is" "inherit (stdenv.hostPlatform) is"
fd --type f "\.nix" | xargs sd --fixed-strings "buildStdenv.is" "buildStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "effectiveStdenv.is" "effectiveStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "originalStdenv.is" "originalStdenv.hostPlatform.is"
```
2024-09-25 00:04:37 +03:00

869 lines
36 KiB
Nix

{ lib, stdenv, buildPackages, buildHaskellPackages, ghc
, jailbreak-cabal, hscolour, cpphs, runCommandCC
, ghcWithHoogle, ghcWithPackages
, nodejs
}:
let
isCross = stdenv.buildPlatform != stdenv.hostPlatform;
# Note that ghc.isGhcjs != stdenv.hostPlatform.isGhcjs.
# ghc.isGhcjs implies that we are using ghcjs, a project separate from GHC.
# (mere) stdenv.hostPlatform.isGhcjs means that we are using GHC's JavaScript
# backend. The latter is a normal cross compilation backend and needs little
# special accommodation.
outputsJS = ghc.isGhcjs or false || stdenv.hostPlatform.isGhcjs;
# Pass the "wrong" C compiler rather than none at all so packages that just
# use the C preproccessor still work, see
# https://github.com/haskell/cabal/issues/6466 for details.
cc =
if stdenv.hasCC then "$CC"
else if stdenv.hostPlatform.isGhcjs then "${emscripten}/bin/emcc"
else "$CC_FOR_BUILD";
inherit (buildPackages)
fetchurl removeReferencesTo
pkg-config coreutils gnugrep glibcLocales
emscripten;
in
{ pname
, dontStrip ? outputsJS
, version, revision ? null
, sha256 ? null
, src ? fetchurl { url = "mirror://hackage/${pname}-${version}.tar.gz"; inherit sha256; }
, buildDepends ? [], setupHaskellDepends ? [], libraryHaskellDepends ? [], executableHaskellDepends ? []
, buildTarget ? ""
, buildTools ? [], libraryToolDepends ? [], executableToolDepends ? [], testToolDepends ? [], benchmarkToolDepends ? []
, configureFlags ? []
, buildFlags ? []
, haddockFlags ? []
, description ? null
, doCheck ? !isCross
, doBenchmark ? false
, doHoogle ? true
, doHaddockQuickjump ? doHoogle
, doInstallIntermediates ? false
, editedCabalFile ? null
, enableLibraryProfiling ? !outputsJS
, enableExecutableProfiling ? false
, profilingDetail ? "exported-functions"
# TODO enable shared libs for cross-compiling
, enableSharedExecutables ? false
, enableSharedLibraries ? !stdenv.hostPlatform.isStatic && (ghc.enableShared or false)
, enableDeadCodeElimination ? (!stdenv.hostPlatform.isDarwin) # TODO: use -dead_strip for darwin
# Disabling this for ghcjs prevents this crash: https://gitlab.haskell.org/ghc/ghc/-/issues/23235
, enableStaticLibraries ? !(stdenv.hostPlatform.isWindows || stdenv.hostPlatform.isWasm || stdenv.hostPlatform.isGhcjs)
, enableHsc2hsViaAsm ? stdenv.hostPlatform.isWindows
, extraLibraries ? [], librarySystemDepends ? [], executableSystemDepends ? []
# On macOS, statically linking against system frameworks is not supported;
# see https://developer.apple.com/library/content/qa/qa1118/_index.html
# They must be propagated to the environment of any executable linking with the library
, libraryFrameworkDepends ? [], executableFrameworkDepends ? []
, homepage ? "https://hackage.haskell.org/package/${pname}"
, platforms ? with lib.platforms; all # GHC can cross-compile
, badPlatforms ? lib.platforms.none
, hydraPlatforms ? null
, hyperlinkSource ? true
, isExecutable ? false, isLibrary ? !isExecutable
, jailbreak ? false
, license
, enableParallelBuilding ? true
, maintainers ? null
, changelog ? null
, mainProgram ? null
, doCoverage ? false
, doHaddock ? !(ghc.isHaLVM or false) && (ghc.hasHaddock or true)
, doHaddockInterfaces ? doHaddock && lib.versionAtLeast ghc.version "9.0.1"
, passthru ? {}
, pkg-configDepends ? [], libraryPkgconfigDepends ? [], executablePkgconfigDepends ? [], testPkgconfigDepends ? [], benchmarkPkgconfigDepends ? []
, testDepends ? [], testHaskellDepends ? [], testSystemDepends ? [], testFrameworkDepends ? []
, benchmarkDepends ? [], benchmarkHaskellDepends ? [], benchmarkSystemDepends ? [], benchmarkFrameworkDepends ? []
, testTarget ? "", testFlags ? []
, broken ? false
, preCompileBuildDriver ? null, postCompileBuildDriver ? null
, preUnpack ? null, postUnpack ? null
, patches ? null, patchPhase ? null, prePatch ? "", postPatch ? ""
, preConfigure ? null, postConfigure ? null
, preBuild ? null, postBuild ? null
, preHaddock ? null, postHaddock ? null
, installPhase ? null, preInstall ? null, postInstall ? null
, checkPhase ? null, preCheck ? null, postCheck ? null
, preFixup ? null, postFixup ? null
, shellHook ? ""
, coreSetup ? false # Use only core packages to build Setup.hs.
, useCpphs ? false
, hardeningDisable ? null
, enableSeparateBinOutput ? false
, enableSeparateDataOutput ? false
, enableSeparateDocOutput ? doHaddock
, enableSeparateIntermediatesOutput ? false
, # Don't fail at configure time if there are multiple versions of the
# same package in the (recursive) dependencies of the package being
# built. Will delay failures, if any, to compile time.
allowInconsistentDependencies ? false
, maxBuildCores ? 16 # more cores usually don't improve performance: https://ghc.haskell.org/trac/ghc/ticket/9221
, # If set to true, this builds a pre-linked .o file for this Haskell library.
# This can make it slightly faster to load this library into GHCi, but takes
# extra disk space and compile time.
enableLibraryForGhci ? false
# Set this to a previous build of this same package to reuse the intermediate
# build products from that prior build as a starting point for accelerating
# this build
, previousIntermediates ? null
# References to these store paths are forbidden in the produced output.
, disallowedRequisites ? []
# Whether to allow the produced output to refer to `ghc`.
#
# This is used by `haskell.lib.justStaticExecutables` to help prevent static
# Haskell binaries from having erroneous dependencies on GHC.
#
# See https://nixos.org/manual/nixpkgs/unstable/#haskell-packaging-helpers
# or its source doc/languages-frameworks/haskell.section.md
, disallowGhcReference ? false
, # Cabal 3.8 which is shipped by default for GHC >= 9.3 always calls
# `pkg-config --libs --static` as part of the configure step. This requires
# Requires.private dependencies of pkg-config dependencies to be present in
# PKG_CONFIG_PATH which is normally not the case in nixpkgs (except in pkgsStatic).
# Since there is no patch or upstream patch yet, we replicate the automatic
# propagation of dependencies in pkgsStatic for allPkgConfigDepends for
# GHC >= 9.3 by default. This option allows overriding this behavior manually
# if mismatching Cabal and GHC versions are used.
# See also <https://github.com/haskell/cabal/issues/8455>.
__propagatePkgConfigDepends ? lib.versionAtLeast ghc.version "9.3"
, # Propagation can easily lead to the argv limit being exceeded in linker or C
# compiler invocations. To work around this we can only propagate derivations
# that are known to provide pkg-config modules, as indicated by the presence
# of `meta.pkgConfigModules`. This option defaults to false for now, since
# this metadata is far from complete in nixpkgs.
__onlyPropagateKnownPkgConfigModules ? false
} @ args:
assert editedCabalFile != null -> revision != null;
# --enable-static does not work on windows. This is a bug in GHC.
# --enable-static will pass -staticlib to ghc, which only works for mach-o and elf.
assert stdenv.hostPlatform.isWindows -> enableStaticLibraries == false;
assert stdenv.hostPlatform.isWasm -> enableStaticLibraries == false;
let
inherit (lib) optional optionals optionalString versionAtLeast
concatStringsSep enableFeature optionalAttrs;
isGhcjs = ghc.isGhcjs or false;
isHaLVM = ghc.isHaLVM or false;
# GHC used for building Setup.hs
#
# Same as our GHC, unless we're cross, in which case it is native GHC with the
# same version, or ghcjs, in which case its the ghc used to build ghcjs.
nativeGhc = buildHaskellPackages.ghc;
# the target dir for haddock documentation
docdir = docoutput: docoutput + "/share/doc/" + pname + "-" + version;
binDir = if enableSeparateBinOutput then "$bin/bin" else "$out/bin";
newCabalFileUrl = "mirror://hackage/${pname}-${version}/revision/${revision}.cabal";
newCabalFile = fetchurl {
url = newCabalFileUrl;
sha256 = editedCabalFile;
name = "${pname}-${version}-r${revision}.cabal";
};
defaultSetupHs = builtins.toFile "Setup.hs" ''
import Distribution.Simple
main = defaultMain
'';
# This awk expression transforms a package conf file like
#
# author: John Doe <john-doe@example.com>
# description:
# The purpose of this library is to do
# foo and bar among other things
#
# into a more easily processeable form:
#
# author: John Doe <john-doe@example.com>
# description: The purpose of this library is to do foo and bar among other things
unprettyConf = builtins.toFile "unpretty-cabal-conf.awk" ''
/^[^ ]+:/ {
# When the line starts with a new field, terminate the previous one with a newline
if (started == 1) print ""
# to strip leading spaces
$1=$1
printf "%s", $0
started=1
}
/^ +/ {
# to strip leading spaces
$1=$1
printf " %s", $0
}
# Terminate the final field with a newline
END { print "" }
'';
crossCabalFlags = [
"--with-ghc=${ghcCommand}"
"--with-ghc-pkg=${ghc.targetPrefix}ghc-pkg"
"--with-gcc=${cc}"
] ++ optionals stdenv.hasCC [
"--with-ld=${stdenv.cc.bintools.targetPrefix}ld"
"--with-ar=${stdenv.cc.bintools.targetPrefix}ar"
# use the one that comes with the cross compiler.
"--with-hsc2hs=${ghc.targetPrefix}hsc2hs"
"--with-strip=${stdenv.cc.bintools.targetPrefix}strip"
] ++ optionals (!isHaLVM) [
"--hsc2hs-option=--cross-compile"
(optionalString enableHsc2hsViaAsm "--hsc2hs-option=--via-asm")
] ++ optional (allPkgconfigDepends != [])
"--with-pkg-config=${pkg-config.targetPrefix}pkg-config";
makeGhcOptions = opts: lib.concatStringsSep " " (map (opt: "--ghc-option=${opt}") opts);
buildFlagsString = optionalString (buildFlags != []) (" " + concatStringsSep " " buildFlags);
defaultConfigureFlags = [
"--verbose"
"--prefix=$out"
# Note: This must be kept in sync manually with mkGhcLibdir
("--libdir=\\$prefix/lib/\\$compiler" + lib.optionalString (ghc ? hadrian) "/lib")
"--libsubdir=\\$abi/\\$libname"
(optionalString enableSeparateDataOutput "--datadir=$data/share/${ghcNameWithPrefix}")
(optionalString enableSeparateDocOutput "--docdir=${docdir "$doc"}")
] ++ optionals stdenv.hasCC [
"--with-gcc=$CC" # Clang won't work without that extra information.
] ++ [
"--package-db=$packageConfDir"
(optionalString (enableSharedExecutables && stdenv.hostPlatform.isLinux) "--ghc-option=-optl=-Wl,-rpath=$out/${ghcLibdir}/${pname}-${version}")
(optionalString (enableSharedExecutables && stdenv.hostPlatform.isDarwin) "--ghc-option=-optl=-Wl,-headerpad_max_install_names")
(optionalString enableParallelBuilding (makeGhcOptions [ "-j$NIX_BUILD_CORES" "+RTS" "-A64M" "-RTS" ]))
(optionalString useCpphs ("--with-cpphs=${cpphs}/bin/cpphs " + (makeGhcOptions [ "-cpp" "-pgmP${cpphs}/bin/cpphs" "-optP--cpp" ])))
(enableFeature enableLibraryProfiling "library-profiling")
(optionalString (enableExecutableProfiling || enableLibraryProfiling) "--profiling-detail=${profilingDetail}")
(enableFeature enableExecutableProfiling "profiling")
(enableFeature enableSharedLibraries "shared")
(enableFeature doCoverage "coverage")
(enableFeature enableStaticLibraries "static")
(enableFeature enableSharedExecutables "executable-dynamic")
(enableFeature doCheck "tests")
(enableFeature doBenchmark "benchmarks")
"--enable-library-vanilla" # TODO: Should this be configurable?
(enableFeature enableLibraryForGhci "library-for-ghci")
(enableFeature enableDeadCodeElimination "split-sections")
(enableFeature (!dontStrip) "library-stripping")
(enableFeature (!dontStrip) "executable-stripping")
] ++ optionals isGhcjs [
"--ghcjs"
] ++ optionals isCross ([
"--configure-option=--host=${stdenv.hostPlatform.config}"
] ++ crossCabalFlags
) ++ optionals enableSeparateBinOutput [
"--bindir=${binDir}"
] ++ optionals (doHaddockInterfaces && isLibrary) [
"--ghc-option=-haddock"
];
postPhases = optional doInstallIntermediates "installIntermediatesPhase";
setupCompileFlags = [
(optionalString (!coreSetup) "-package-db=$setupPackageConfDir")
"-threaded" # https://github.com/haskell/cabal/issues/2398
];
isHaskellPkg = x: x ? isHaskellLibrary;
# Work around a Cabal bug requiring pkg-config --static --libs to work even
# when linking dynamically, affecting Cabal 3.8 and 3.9.
# https://github.com/haskell/cabal/issues/8455
#
# For this, we treat the runtime system/pkg-config dependencies of a Haskell
# derivation as if they were propagated from their dependencies which allows
# pkg-config --static to work in most cases.
allPkgconfigDepends =
let
# If __onlyPropagateKnownPkgConfigModules is set, packages without
# meta.pkgConfigModules will be filtered out, otherwise all packages in
# buildInputs and propagatePlainBuildInputs are propagated.
propagateValue = drv:
lib.isDerivation drv
&& (__onlyPropagateKnownPkgConfigModules -> drv ? meta.pkgConfigModules);
# Take list of derivations and return list of the transitive dependency
# closure, only taking into account buildInputs. Loosely based on
# closePropagationFast.
propagatePlainBuildInputs = drvs:
builtins.map (i: i.val) (
builtins.genericClosure {
startSet = builtins.map (drv:
{ key = drv.outPath; val = drv; }
) (builtins.filter propagateValue drvs);
operator = { val, ... }:
builtins.concatMap (drv:
if propagateValue drv
then [ { key = drv.outPath; val = drv; } ]
else [ ]
) (val.buildInputs or [ ] ++ val.propagatedBuildInputs or [ ]);
}
);
in
if __propagatePkgConfigDepends
then propagatePlainBuildInputs allPkgconfigDepends'
else allPkgconfigDepends';
allPkgconfigDepends' =
pkg-configDepends ++ libraryPkgconfigDepends ++ executablePkgconfigDepends ++
optionals doCheck testPkgconfigDepends ++ optionals doBenchmark benchmarkPkgconfigDepends;
depsBuildBuild = [ nativeGhc ]
# CC_FOR_BUILD may be necessary if we have no C preprocessor for the host
# platform. See crossCabalFlags above for more details.
++ lib.optionals (!stdenv.hasCC) [ buildPackages.stdenv.cc ];
collectedToolDepends =
buildTools ++ libraryToolDepends ++ executableToolDepends ++
optionals doCheck testToolDepends ++
optionals doBenchmark benchmarkToolDepends;
nativeBuildInputs =
[ ghc removeReferencesTo ] ++ optional (allPkgconfigDepends != []) (assert pkg-config != null; pkg-config) ++
setupHaskellDepends ++ collectedToolDepends ++ optional stdenv.hostPlatform.isGhcjs nodejs;
propagatedBuildInputs = buildDepends ++ libraryHaskellDepends ++ executableHaskellDepends ++ libraryFrameworkDepends;
otherBuildInputsHaskell =
optionals doCheck (testDepends ++ testHaskellDepends) ++
optionals doBenchmark (benchmarkDepends ++ benchmarkHaskellDepends);
otherBuildInputsSystem =
extraLibraries ++ librarySystemDepends ++ executableSystemDepends ++ executableFrameworkDepends ++
allPkgconfigDepends ++
optionals doCheck (testSystemDepends ++ testFrameworkDepends) ++
optionals doBenchmark (benchmarkSystemDepends ++ benchmarkFrameworkDepends);
# TODO next rebuild just define as `otherBuildInputsHaskell ++ otherBuildInputsSystem`
otherBuildInputs =
extraLibraries ++ librarySystemDepends ++ executableSystemDepends ++ executableFrameworkDepends ++
allPkgconfigDepends ++
optionals doCheck (testDepends ++ testHaskellDepends ++ testSystemDepends ++ testFrameworkDepends) ++
optionals doBenchmark (benchmarkDepends ++ benchmarkHaskellDepends ++ benchmarkSystemDepends ++ benchmarkFrameworkDepends);
setupCommand = "./Setup";
ghcCommand' = if isGhcjs then "ghcjs" else "ghc";
ghcCommand = "${ghc.targetPrefix}${ghcCommand'}";
ghcNameWithPrefix = "${ghc.targetPrefix}${ghc.haskellCompilerName}";
mkGhcLibdir = ghc: "lib/${ghc.targetPrefix}${ghc.haskellCompilerName}"
+ lib.optionalString (ghc ? hadrian) "/lib";
ghcLibdir = mkGhcLibdir ghc;
nativeGhcCommand = "${nativeGhc.targetPrefix}ghc";
buildPkgDb = thisGhc: packageConfDir: ''
# If this dependency has a package database, then copy the contents of it,
# unless it is one of our GHCs. These can appear in our dependencies when
# we are doing native builds, and they have package databases in them, but
# we do not want to copy them over.
#
# We don't need to, since those packages will be provided by the GHC when
# we compile with it, and doing so can result in having multiple copies of
# e.g. Cabal in the database with the same name and version, which is
# ambiguous.
if [ -d "$p/${mkGhcLibdir thisGhc}/package.conf.d" ] && [ "$p" != "${ghc}" ] && [ "$p" != "${nativeGhc}" ]; then
cp -f "$p/${mkGhcLibdir thisGhc}/package.conf.d/"*.conf ${packageConfDir}/
continue
fi
'';
intermediatesDir = "share/haskell/${ghc.version}/${pname}-${version}/dist";
# This is a script suitable for --test-wrapper of Setup.hs' test command
# (https://cabal.readthedocs.io/en/3.12/setup-commands.html#cmdoption-runhaskell-Setup.hs-test-test-wrapper).
# We use it to set some environment variables that the test suite may need,
# e.g. GHC_PACKAGE_PATH to invoke GHC(i) at runtime with build dependencies
# available. See the comment accompanying checkPhase below on how to customize
# this behavior. We need to use a wrapper script since Cabal forbids setting
# certain environment variables since they can alter GHC's behavior (e.g.
# GHC_PACKAGE_PATH) and cause failures. While building, Cabal will set
# GHC_ENVIRONMENT to make the packages picked at configure time available to
# GHC, but unfortunately not at test time. The test wrapper script will be
# executed after such environment checks, so we can take some liberties which
# is unproblematic since we know our synthetic package db matches what Cabal
# will see at configure time exactly. See also
# <https://github.com/haskell/cabal/issues/7792>.
testWrapperScript = buildPackages.writeShellScript
"haskell-generic-builder-test-wrapper.sh"
''
set -eu
# We expect this to be either empty or set by checkPhase
if [[ -n "''${NIX_GHC_PACKAGE_PATH_FOR_TEST}" ]]; then
export GHC_PACKAGE_PATH="''${NIX_GHC_PACKAGE_PATH_FOR_TEST}"
fi
exec "$@"
'';
in lib.fix (drv:
stdenv.mkDerivation ({
inherit pname version;
outputs = [ "out" ]
++ (optional enableSeparateDataOutput "data")
++ (optional enableSeparateDocOutput "doc")
++ (optional enableSeparateBinOutput "bin")
++ (optional enableSeparateIntermediatesOutput "intermediates");
setOutputFlags = false;
pos = builtins.unsafeGetAttrPos "pname" args;
prePhases = ["setupCompilerEnvironmentPhase"];
preConfigurePhases = ["compileBuildDriverPhase"];
preInstallPhases = ["haddockPhase"];
inherit src;
inherit depsBuildBuild nativeBuildInputs;
buildInputs = otherBuildInputs ++ optionals (!isLibrary) propagatedBuildInputs
# For patchShebangsAuto in fixupPhase
++ optionals stdenv.hostPlatform.isGhcjs [ nodejs ];
propagatedBuildInputs = optionals isLibrary propagatedBuildInputs;
LANG = "en_US.UTF-8"; # GHC needs the locale configured during the Haddock phase.
prePatch = optionalString (editedCabalFile != null) ''
echo "Replace Cabal file with edited version from ${newCabalFileUrl}."
cp ${newCabalFile} ${pname}.cabal
'' + prePatch;
postPatch = optionalString jailbreak ''
echo "Run jailbreak-cabal to lift version restrictions on build inputs."
${jailbreak-cabal}/bin/jailbreak-cabal ${pname}.cabal
'' + postPatch;
setupCompilerEnvironmentPhase = ''
NIX_BUILD_CORES=$(( NIX_BUILD_CORES < ${toString maxBuildCores} ? NIX_BUILD_CORES : ${toString maxBuildCores} ))
runHook preSetupCompilerEnvironment
echo "Build with ${ghc}."
${optionalString (isLibrary && hyperlinkSource) "export PATH=${hscolour}/bin:$PATH"}
builddir="$(mktemp -d)"
setupPackageConfDir="$builddir/setup-package.conf.d"
mkdir -p $setupPackageConfDir
packageConfDir="$builddir/package.conf.d"
mkdir -p $packageConfDir
setupCompileFlags="${concatStringsSep " " setupCompileFlags}"
configureFlags="${concatStringsSep " " defaultConfigureFlags} $configureFlags"
''
# We build the Setup.hs on the *build* machine, and as such should only add
# dependencies for the build machine.
#
# pkgs* arrays defined in stdenv/setup.hs
+ ''
for p in "''${pkgsBuildBuild[@]}" "''${pkgsBuildHost[@]}" "''${pkgsBuildTarget[@]}"; do
${buildPkgDb nativeGhc "$setupPackageConfDir"}
done
${nativeGhcCommand}-pkg --package-db="$setupPackageConfDir" recache
''
# For normal components
+ ''
for p in "''${pkgsHostHost[@]}" "''${pkgsHostTarget[@]}"; do
${buildPkgDb ghc "$packageConfDir"}
if [ -d "$p/include" ]; then
configureFlags+=" --extra-include-dirs=$p/include"
fi
if [ -d "$p/lib" ]; then
configureFlags+=" --extra-lib-dirs=$p/lib"
fi
if [[ -d "$p/Library/Frameworks" ]]; then
configureFlags+=" --extra-framework-dirs=$p/Library/Frameworks"
fi
'' + ''
done
''
+ (optionalString stdenv.hostPlatform.isGhcjs ''
export EM_CACHE="$(realpath "$(mktemp -d emcache.XXXXXXXXXX)")"
cp -Lr ${emscripten}/share/emscripten/cache/* "$EM_CACHE/"
chmod u+rwX -R "$EM_CACHE"
'')
# only use the links hack if we're actually building dylibs. otherwise, the
# "dynamic-library-dirs" point to nonexistent paths, and the ln command becomes
# "ln -s $out/lib/links", which tries to recreate the links dir and fails
#
# Note: We need to disable this work-around when using intermediate build
# products from a prior build because otherwise Nix will change permissions on
# the `$out/lib/links` directory to read-only when the build is done after the
# dist directory has already been exported, which triggers an unnecessary
# rebuild of modules included in the exported dist directory.
+ (optionalString (stdenv.hostPlatform.isDarwin && (enableSharedLibraries || enableSharedExecutables) && !enableSeparateIntermediatesOutput) ''
# Work around a limit in the macOS Sierra linker on the number of paths
# referenced by any one dynamic library:
#
# Create a local directory with symlinks of the *.dylib (macOS shared
# libraries) from all the dependencies.
local dynamicLinksDir="$out/lib/links"
mkdir -p $dynamicLinksDir
# Unprettify all package conf files before reading/writing them
for d in "$packageConfDir/"*; do
# gawk -i inplace seems to strip the last newline
gawk -f ${unprettyConf} "$d" > tmp
mv tmp "$d"
done
for d in $(grep '^dynamic-library-dirs:' "$packageConfDir"/* | cut -d' ' -f2- | tr ' ' '\n' | sort -u); do
for lib in "$d/"*.{dylib,so}; do
# Allow overwriting because C libs can be pulled in multiple times.
ln -sf "$lib" "$dynamicLinksDir"
done
done
# Edit the local package DB to reference the links directory.
for f in "$packageConfDir/"*.conf; do
sed -i "s,dynamic-library-dirs: .*,dynamic-library-dirs: $dynamicLinksDir," "$f"
done
'') + ''
${ghcCommand}-pkg --package-db="$packageConfDir" recache
runHook postSetupCompilerEnvironment
'';
compileBuildDriverPhase = ''
runHook preCompileBuildDriver
for i in Setup.hs Setup.lhs ${defaultSetupHs}; do
test -f $i && break
done
echo setupCompileFlags: $setupCompileFlags
${nativeGhcCommand} $setupCompileFlags --make -o Setup -odir $builddir -hidir $builddir $i
runHook postCompileBuildDriver
'';
# Cabal takes flags like `--configure-option=--host=...` instead
configurePlatforms = [];
inherit configureFlags;
# Note: the options here must be always added, regardless of whether the
# package specifies `hardeningDisable`.
hardeningDisable = lib.optionals (args ? hardeningDisable) hardeningDisable
++ lib.optional (ghc.isHaLVM or false) "all"
# Static libraries (ie. all of pkgsStatic.haskellPackages) fail to build
# because by default Nix adds `-pie` to the linker flags: this
# conflicts with the `-r` and `-no-pie` flags added by GHC (see
# https://gitlab.haskell.org/ghc/ghc/-/issues/19580). hardeningDisable
# changes the default Nix behavior regarding adding "hardening" flags.
++ lib.optional enableStaticLibraries "pie";
configurePhase = ''
runHook preConfigure
echo configureFlags: $configureFlags
${setupCommand} configure $configureFlags 2>&1 | ${coreutils}/bin/tee "$NIX_BUILD_TOP/cabal-configure.log"
${lib.optionalString (!allowInconsistentDependencies) ''
if ${gnugrep}/bin/egrep -q -z 'Warning:.*depends on multiple versions' "$NIX_BUILD_TOP/cabal-configure.log"; then
echo >&2 "*** abort because of serious configure-time warning from Cabal"
exit 1
fi
''}
runHook postConfigure
'';
buildPhase =
''
runHook preBuild
''
+ lib.optionalString (previousIntermediates != null)
''
mkdir -p dist;
rm -r dist/build
cp -r ${previousIntermediates}/${intermediatesDir}/build dist/build
find dist/build -exec chmod u+w {} +
find dist/build -exec touch -d '1970-01-01T00:00:00Z' {} +
''
+ ''
${setupCommand} build ${buildTarget}${buildFlagsString}
runHook postBuild
'';
inherit doCheck;
# Run test suite(s) and pass `checkFlags` as well as `checkFlagsArray`.
# `testFlags` are added to `checkFlagsArray` each prefixed with
# `--test-option`, so Cabal passes it to the underlying test suite binary.
#
# We also take care of setting GHC_PACKAGE_PATH during test suite execution,
# so it can run GHC(i) with build dependencies available:
# - If NIX_GHC_PACKAGE_PATH_FOR_TEST is set, it become the value of GHC_PACKAGE_PATH
# while the test suite is executed.
# - If it is empty, it'll be unset during test suite execution.
# - Otherwise GHC_PACKAGE_PATH will have the package db used for configuring
# plus GHC's core packages.
checkPhase = ''
runHook preCheck
checkFlagsArray+=(
"--show-details=streaming"
"--test-wrapper=${testWrapperScript}"
${lib.escapeShellArgs (builtins.map (opt: "--test-option=${opt}") testFlags)}
)
export NIX_GHC_PACKAGE_PATH_FOR_TEST="''${NIX_GHC_PACKAGE_PATH_FOR_TEST:-$packageConfDir:}"
${setupCommand} test ${testTarget} $checkFlags ''${checkFlagsArray:+"''${checkFlagsArray[@]}"}
runHook postCheck
'';
haddockPhase = ''
runHook preHaddock
${optionalString (doHaddock && isLibrary) ''
${setupCommand} haddock --html \
${optionalString doHoogle "--hoogle"} \
${optionalString doHaddockQuickjump "--quickjump"} \
${optionalString (isLibrary && hyperlinkSource) "--hyperlink-source"} \
${lib.concatStringsSep " " haddockFlags}
''}
runHook postHaddock
'';
installPhase = ''
runHook preInstall
${if !isLibrary && buildTarget == "" then "${setupCommand} install"
# ^^ if the project is not a library, and no build target is specified, we can just use "install".
else if !isLibrary then "${setupCommand} copy ${buildTarget}"
# ^^ if the project is not a library, and we have a build target, then use "copy" to install
# just the target specified; "install" will error here, since not all targets have been built.
else ''
${setupCommand} copy ${buildTarget}
local packageConfDir="$out/${ghcLibdir}/package.conf.d"
local packageConfFile="$packageConfDir/${pname}-${version}.conf"
mkdir -p "$packageConfDir"
${setupCommand} register --gen-pkg-config=$packageConfFile
if [ -d "$packageConfFile" ]; then
mv "$packageConfFile/"* "$packageConfDir"
rmdir "$packageConfFile"
fi
for packageConfFile in "$packageConfDir/"*; do
local pkgId=$(gawk -f ${unprettyConf} "$packageConfFile" \
| grep '^id:' | cut -d' ' -f2)
mv "$packageConfFile" "$packageConfDir/$pkgId.conf"
done
# delete confdir if there are no libraries
find $packageConfDir -maxdepth 0 -empty -delete;
''}
${optionalString isGhcjs ''
for exeDir in "${binDir}/"*.jsexe; do
exe="''${exeDir%.jsexe}"
printWords '#!${nodejs}/bin/node' > "$exe"
echo >> "$exe"
cat "$exeDir/all.js" >> "$exe"
chmod +x "$exe"
done
''}
${optionalString doCoverage "mkdir -p $out/share && cp -r dist/hpc $out/share"}
${optionalString enableSeparateDocOutput ''
for x in ${docdir "$doc"}"/html/src/"*.html; do
remove-references-to -t $out $x
done
mkdir -p $doc
''}
${optionalString enableSeparateDataOutput "mkdir -p $data"}
runHook postInstall
'';
${if doInstallIntermediates then "installIntermediatesPhase" else null} = ''
runHook preInstallIntermediates
intermediatesOutput=${if enableSeparateIntermediatesOutput then "$intermediates" else "$out"}
installIntermediatesDir="$intermediatesOutput/${intermediatesDir}"
mkdir -p "$installIntermediatesDir"
cp -r dist/build "$installIntermediatesDir"
runHook postInstallIntermediates
'';
passthru = passthru // rec {
inherit pname version disallowGhcReference;
compiler = ghc;
# All this information is intended just for `shellFor`. It should be
# considered unstable and indeed we knew how to keep it private we would.
getCabalDeps = {
inherit
buildDepends
buildTools
executableFrameworkDepends
executableHaskellDepends
executablePkgconfigDepends
executableSystemDepends
executableToolDepends
extraLibraries
libraryFrameworkDepends
libraryHaskellDepends
libraryPkgconfigDepends
librarySystemDepends
libraryToolDepends
pkg-configDepends
setupHaskellDepends
;
} // lib.optionalAttrs doCheck {
inherit
testDepends
testFrameworkDepends
testHaskellDepends
testPkgconfigDepends
testSystemDepends
testToolDepends
;
} // lib.optionalAttrs doBenchmark {
inherit
benchmarkDepends
benchmarkFrameworkDepends
benchmarkHaskellDepends
benchmarkPkgconfigDepends
benchmarkSystemDepends
benchmarkToolDepends
;
};
# Attributes for the old definition of `shellFor`. Should be removed but
# this predates the warning at the top of `getCabalDeps`.
getBuildInputs = rec {
inherit propagatedBuildInputs otherBuildInputs allPkgconfigDepends;
haskellBuildInputs = isHaskellPartition.right;
systemBuildInputs = isHaskellPartition.wrong;
isHaskellPartition = lib.partition
isHaskellPkg
(propagatedBuildInputs ++ otherBuildInputs ++ depsBuildBuild ++ nativeBuildInputs);
};
isHaskellLibrary = isLibrary;
# TODO: ask why the split outputs are configurable at all?
# TODO: include tests for split if possible
# Given the haskell package, returns
# the directory containing the haddock documentation.
# `null' if no haddock documentation was built.
# TODO: fetch the self from the fixpoint instead
haddockDir = self: if doHaddock then "${docdir self.doc}/html" else null;
# Creates a derivation containing all of the necessary dependencies for building the
# parent derivation. The attribute set that it takes as input can be viewed as:
#
# { withHoogle }
#
# The derivation that it builds contains no outpaths because it is meant for use
# as an environment
#
# # Example use
# # Creates a shell with all of the dependencies required to build the "hello" package,
# # and with python:
#
# > nix-shell -E 'with (import <nixpkgs> {}); \
# > haskell.packages.ghc865.hello.envFunc { buildInputs = [ python ]; }'
envFunc = { withHoogle ? false }:
let
name = "ghc-shell-for-${drv.name}";
withPackages = if withHoogle then ghcWithHoogle else ghcWithPackages;
# We use the `ghcWithPackages` function from `buildHaskellPackages` if we
# want a shell for the sake of cross compiling a package. In the native case
# we don't use this at all, and instead put the setupDepends in the main
# `ghcWithPackages`. This way we don't have two wrapper scripts called `ghc`
# shadowing each other on the PATH.
ghcEnvForBuild =
assert isCross;
buildHaskellPackages.ghcWithPackages (_: setupHaskellDepends);
ghcEnv = withPackages (_:
otherBuildInputsHaskell ++
propagatedBuildInputs ++
lib.optionals (!isCross) setupHaskellDepends);
ghcCommandCaps = lib.toUpper ghcCommand';
in runCommandCC name {
inherit shellHook;
depsBuildBuild = lib.optional isCross ghcEnvForBuild;
nativeBuildInputs =
[ ghcEnv ] ++ optional (allPkgconfigDepends != []) pkg-config ++
collectedToolDepends;
buildInputs =
otherBuildInputsSystem;
LANG = "en_US.UTF-8";
LOCALE_ARCHIVE = lib.optionalString (stdenv.hostPlatform.libc == "glibc") "${buildPackages.glibcLocales}/lib/locale/locale-archive";
"NIX_${ghcCommandCaps}" = "${ghcEnv}/bin/${ghcCommand}";
"NIX_${ghcCommandCaps}PKG" = "${ghcEnv}/bin/${ghcCommand}-pkg";
# TODO: is this still valid?
"NIX_${ghcCommandCaps}_DOCDIR" = "${ghcEnv}/share/doc/ghc/html";
"NIX_${ghcCommandCaps}_LIBDIR" = if ghc.isHaLVM or false
then "${ghcEnv}/lib/HaLVM-${ghc.version}"
else "${ghcEnv}/${ghcLibdir}";
} "echo $nativeBuildInputs $buildInputs > $out";
env = envFunc { };
};
meta = { inherit homepage license platforms; }
// optionalAttrs (args ? broken) { inherit broken; }
// optionalAttrs (args ? description) { inherit description; }
// optionalAttrs (args ? maintainers) { inherit maintainers; }
// optionalAttrs (args ? hydraPlatforms) { inherit hydraPlatforms; }
// optionalAttrs (args ? badPlatforms) { inherit badPlatforms; }
// optionalAttrs (args ? changelog) { inherit changelog; }
// optionalAttrs (args ? mainProgram) { inherit mainProgram; }
;
}
// optionalAttrs (args ? preCompileBuildDriver) { inherit preCompileBuildDriver; }
// optionalAttrs (args ? postCompileBuildDriver) { inherit postCompileBuildDriver; }
// optionalAttrs (args ? preUnpack) { inherit preUnpack; }
// optionalAttrs (args ? postUnpack) { inherit postUnpack; }
// optionalAttrs (args ? patches) { inherit patches; }
// optionalAttrs (args ? patchPhase) { inherit patchPhase; }
// optionalAttrs (args ? preConfigure) { inherit preConfigure; }
// optionalAttrs (args ? postConfigure) { inherit postConfigure; }
// optionalAttrs (args ? preBuild) { inherit preBuild; }
// optionalAttrs (args ? postBuild) { inherit postBuild; }
// optionalAttrs (args ? doBenchmark) { inherit doBenchmark; }
// optionalAttrs (args ? checkPhase) { inherit checkPhase; }
// optionalAttrs (args ? preCheck) { inherit preCheck; }
// optionalAttrs (args ? postCheck) { inherit postCheck; }
// optionalAttrs (args ? preHaddock) { inherit preHaddock; }
// optionalAttrs (args ? postHaddock) { inherit postHaddock; }
// optionalAttrs (args ? preInstall) { inherit preInstall; }
// optionalAttrs (args ? installPhase) { inherit installPhase; }
// optionalAttrs (args ? postInstall) { inherit postInstall; }
// optionalAttrs (args ? preFixup) { inherit preFixup; }
// optionalAttrs (args ? postFixup) { inherit postFixup; }
// optionalAttrs (args ? dontStrip) { inherit dontStrip; }
// optionalAttrs (postPhases != []) { inherit postPhases; }
// optionalAttrs (stdenv.buildPlatform.libc == "glibc"){ LOCALE_ARCHIVE = "${glibcLocales}/lib/locale/locale-archive"; }
// optionalAttrs (disallowedRequisites != [] || disallowGhcReference) {
disallowedRequisites =
disallowedRequisites
++ (
if disallowGhcReference
then [ghc]
else []
);
}
# Implicit pointer to integer conversions are errors by default since clang 15.
# Works around https://gitlab.haskell.org/ghc/ghc/-/issues/23456.
// optionalAttrs (stdenv.hasCC && stdenv.cc.isClang) {
NIX_CFLAGS_COMPILE = "-Wno-error=int-conversion";
}
)
)