{ version, rev ? null, sha256, url ? if rev != null then "https://gitlab.haskell.org/ghc/ghc.git" else "https://downloads.haskell.org/ghc/${version}/ghc-${version}-src.tar.xz", postFetch ? null, }: { lib, stdenv, stdenvNoCC, pkgsBuildTarget, pkgsHostTarget, buildPackages, targetPackages, fetchpatch, # build-tools bootPkgs, autoreconfHook, coreutils, fetchurl, fetchgit, perl, python3, sphinx, xattr, autoSignDarwinBinariesHook, bash, srcOnly, libiconv ? null, ncurses, # GHC can be built with system libffi or a bundled one. libffi ? null, useLLVM ? !(import ./common-have-ncg.nix { inherit lib stdenv version; }), # LLVM is conceptually a run-time-only dependency, but for # non-x86, we need LLVM to bootstrap later stages, so it becomes a # build-time dependency too. buildTargetLlvmPackages, llvmPackages, # If enabled, GHC will be built with the GPL-free but slightly slower native # bignum backend instead of the faster but GPLed gmp backend. enableNativeBignum ? !(lib.meta.availableOn stdenv.hostPlatform gmp && lib.meta.availableOn stdenv.targetPlatform gmp) || stdenv.targetPlatform.isGhcjs, gmp, # If enabled, use -fPIC when compiling static libs. enableRelocatedStaticLibs ? stdenv.targetPlatform != stdenv.hostPlatform && !stdenv.targetPlatform.isWindows, # Exceeds Hydra output limit (at the time of writing ~3GB) when cross compiled to riscv64. # A riscv64 cross-compiler fits into the limit comfortably. enableProfiledLibs ? !stdenv.hostPlatform.isRiscV64, # Whether to build dynamic libs for the standard library (on the target # platform). Static libs are always built. enableShared ? with stdenv.targetPlatform; !isWindows && !useiOSPrebuilt && !isStatic && !isGhcjs, # Whether to build terminfo. enableTerminfo ? !( stdenv.targetPlatform.isWindows || stdenv.targetPlatform.isGhcjs # Before , # we couldn't force hadrian to build terminfo for different triples. || ( lib.versionOlder version "9.15.20250808" && ( stdenv.buildPlatform.config != stdenv.hostPlatform.config || stdenv.hostPlatform.config != stdenv.targetPlatform.config ) ) ), # Libdw.c only supports x86_64, i686 and s390x as of 2022-08-04 enableDwarf ? (stdenv.targetPlatform.isx86 || (stdenv.targetPlatform.isS390 && stdenv.targetPlatform.is64bit)) && lib.meta.availableOn stdenv.hostPlatform elfutils && lib.meta.availableOn stdenv.targetPlatform elfutils && # HACK: elfutils is marked as broken on static platforms # which availableOn can't tell. !stdenv.targetPlatform.isStatic && !stdenv.hostPlatform.isStatic, elfutils, # Enable NUMA support in RTS enableNuma ? lib.meta.availableOn stdenv.targetPlatform numactl, numactl, # What flavour to build. Flavour string may contain a flavour and flavour # transformers as accepted by hadrian. ghcFlavour ? let # TODO(@sternenseemann): does using the static flavour make sense? baseFlavour = "release"; # Note: in case hadrian's flavour transformers cease being expressive # enough for us, we'll need to resort to defining a "nixpkgs" flavour # in hadrianUserSettings and using that instead. transformers = lib.optionals useLLVM [ "llvm" ] ++ lib.optionals (!enableShared) [ "no_dynamic_libs" "no_dynamic_ghc" ] ++ lib.optionals (!enableProfiledLibs) [ "no_profiled_libs" ] # While split sections are now enabled by default in ghc 8.8 for windows, # they seem to lead to `too many sections` errors when building base for # profiling. ++ (if stdenv.targetPlatform.isWindows then [ "no_split_sections" ] else [ "split_sections" ]); in baseFlavour + lib.concatMapStrings (t: "+${t}") transformers, # Contents of the UserSettings.hs file to use when compiling hadrian. hadrianUserSettings ? '' module UserSettings ( userFlavours, userPackages, userDefaultFlavour, verboseCommand, buildProgressColour, successColour, finalStage ) where import Flavour.Type import Expression import {-# SOURCE #-} Settings.Default -- no way to set this via the command line finalStage :: Stage finalStage = ${ # N. B. hadrian ignores this setting if it doesn't agree it's possible, # i.e. when its cross-compiling setting is true. So while we could, in theory, # build Stage2 if hostPlatform.canExecute targetPlatform, hadrian won't play # ball (with make, Stage2 was built if hostPlatform.system == targetPlatform.system). if stdenv.hostPlatform == stdenv.targetPlatform then "Stage2" # native compiler else "Stage1" # cross compiler } userDefaultFlavour :: String userDefaultFlavour = "release" userFlavours :: [Flavour] userFlavours = [] -- Disable Colours buildProgressColour :: BuildProgressColour buildProgressColour = mkBuildProgressColour (Dull Reset) successColour :: SuccessColour successColour = mkSuccessColour (Dull Reset) -- taken from src/UserSettings.hs unchanged, need to be there userPackages :: [Package] userPackages = [] verboseCommand :: Predicate verboseCommand = do verbosity <- expr getVerbosity return $ verbosity >= Verbose '', ghcSrc ? srcOnly { name = "ghc-${version}"; # -source appended by srcOnly src = (if rev != null then fetchgit else fetchurl) ( { inherit url sha256; } // lib.optionalAttrs (rev != null) { inherit rev; } // lib.optionalAttrs (postFetch != null) { inherit postFetch; } ); patches = let enableHyperlinkedSource = # Disable haddock generating pretty source listings to stay under 3GB on aarch64-linux !(stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) # 9.8 and 9.10 don't run into this problem for some reason || (lib.versionAtLeast version "9.8" && lib.versionOlder version "9.11"); in lib.optionals (lib.versionOlder version "9.8") [ # Fix unlit being installed under a different name than is used in the # settings file: https://gitlab.haskell.org/ghc/ghc/-/issues/23317 krank:ignore-line (fetchpatch { name = "ghc-9.6-fix-unlit-path.patch"; url = "https://gitlab.haskell.org/ghc/ghc/-/commit/8fde4ac84ec7b1ead238cb158bbef48555d12af9.patch"; hash = "sha256-3+CyRBpebEZi8YpS22SsdGQHqi0drR7cCKPtKbR3zyE="; }) ] ++ lib.optionals (stdenv.targetPlatform.isDarwin && stdenv.targetPlatform.isAarch64) [ # Prevent the paths module from emitting symbols that we don't use # when building with separate outputs. # # These cause problems as they're not eliminated by GHC's dead code # elimination on aarch64-darwin. (see # https://github.com/NixOS/nixpkgs/issues/140774 for details). krank:ignore-line ( if lib.versionOlder version "9.10" then ./Cabal-at-least-3.6-paths-fix-cycle-aarch64-darwin.patch else if lib.versionOlder version "9.14" then ./Cabal-3.12-paths-fix-cycle-aarch64-darwin.patch else ./Cabal-3.16-paths-fix-cycle-aarch64-darwin.patch ) ] # Prevents passing --hyperlinked-source to haddock. Note that this can # be configured via a user defined flavour now. Unfortunately, it is # impossible to import an existing flavour in UserSettings, so patching # the defaults is actually simpler and less maintenance intensive # compared to keeping an entire flavour definition in sync with upstream # manually. # See also https://gitlab.haskell.org/ghc/ghc/-/issues/23625 krank:ignore-line ++ lib.optionals (!enableHyperlinkedSource) [ ( if lib.versionOlder version "9.8" then ../../tools/haskell/hadrian/disable-hyperlinked-source-pre-9.8.patch else ../../tools/haskell/hadrian/disable-hyperlinked-source-extra-args.patch ) ] ++ lib.optionals (lib.versionAtLeast version "9.8" && lib.versionOlder version "9.12") [ (fetchpatch { name = "enable-ignore-build-platform-mismatch.patch"; url = "https://gitlab.haskell.org/ghc/ghc/-/commit/4ee094d46effd06093090fcba70f0a80d2a57e6c.patch"; includes = [ "configure.ac" ]; hash = "sha256-L3FQvcm9QB59BOiR2g5/HACAufIG08HiT53EIOjj64g="; }) ] ++ lib.optionals (lib.versionOlder version "9.12.1") [ (fetchpatch { name = "ghc-ppc-support-elf-v2-on-powerpc64-big-endian.patch"; url = "https://gitlab.haskell.org/ghc/ghc/-/commit/ead75532c9dc915bfa9ebaef0ef5d148e793cc0a.patch"; # ghc-platform was split out of ghc-boot in ddcdd88c2c95445a87ee028f215d1e876939a4d9 postFetch = lib.optionalString (lib.versionOlder version "9.10.1") '' substituteInPlace $out \ --replace-fail 'libraries/ghc-platform/src/GHC' 'libraries/ghc-boot/GHC' ''; hash = if lib.versionOlder version "9.10.1" then "sha256-5SVSW1aYoItqHli5QjnudH4zGporYNLDeEo4gZksBZw=" else "sha256-vtjT+TL/7sYPu4rcVV3xCqJQ+uqkyBbf9l0KIi97j/0="; }) ] ++ lib.optionals ( (lib.versions.majorMinor version == "9.12" && lib.versionOlder version "9.12.3") || (lib.versions.majorMinor version != "9.12" && lib.versionOlder version "9.14.1") ) [ (fetchpatch { name = "ghc-rts-Fix-compile-on-powerpc64-elf-v1.patch"; url = "https://gitlab.haskell.org/ghc/ghc/-/commit/05e5785a3157c71e327a8e9bdc80fa7082918739.patch"; hash = "sha256-xP5v3cKhXeTRSFvRiKEn9hPxGXgVgykjTILKjh/pdDU="; }) ] # Fix build with gcc15 # https://gitlab.haskell.org/ghc/ghc/-/issues/25662 # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13863 ++ lib.optionals ( lib.versionOlder version "9.12.3" && !(lib.versionAtLeast version "9.10.2" && lib.versionOlder version "9.12") ) [ (fetchpatch { name = "ghc-hp2ps-c-gnu17.patch"; url = "https://src.fedoraproject.org/rpms/ghc/raw/9c26d7c3c3de73509a25806e5663b37bcf2e0b4e/f/hp2ps-C-gnu17.patch"; hash = "sha256-Vr5wkiSE1S5e+cJ8pWUvG9KFpxtmvQ8wAy08ElGNp5E="; }) ] # Fixes stack overrun in rts which crashes an process whenever # freeHaskellFunPtr is called with nixpkgs' hardening flags. # https://gitlab.haskell.org/ghc/ghc/-/issues/25485 krank:ignore-line # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13599 ++ lib.optionals (lib.versionOlder version "9.13") [ (fetchpatch { name = "ghc-rts-adjustor-fix-i386-stack-overrun.patch"; url = "https://gitlab.haskell.org/ghc/ghc/-/commit/39bb6e583d64738db51441a556d499aa93a4fc4a.patch"; sha256 = "0w5fx413z924bi2irsy1l4xapxxhrq158b5gn6jzrbsmhvmpirs0"; }) ] # Unreleased or still in-progress upstream cross fixes ++ lib.optionals (lib.versionAtLeast version "9.10.2" && lib.versionOlder version "9.15") [ # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13919 (fetchpatch { name = "include-modern-utimbuf.patch"; url = "https://gitlab.haskell.org/ghc/ghc/-/commit/7e75928ed0f1c4654de6ddd13d0b00bf4b5c6411.patch"; hash = "sha256-sb+AHdkGkCu8MW0xoQIpD5kEc0zYX8udAMDoC+TWc0Q="; }) # https://gitlab.haskell.org/ghc/ghc/-/issues/26290 krank:ignore-line ./export-heap-methods.patch ] ++ lib.optionals (lib.versionAtLeast version "9.10.3") [ # https://gitlab.haskell.org/ghc/ghc/-/issues/26518 krank:ignore-line ./ghc-define-undefined-elf-st-visibility.patch ] # Fix docs build with Sphinx >= 9 https://gitlab.haskell.org/ghc/ghc/-/issues/26810 ++ [ ./ghc-9.6-or-later-docs-sphinx-9.patch ] ++ (import ./common-llvm-patches.nix { inherit lib version fetchpatch; }); stdenv = stdenvNoCC; }, # GHC's build system hadrian built from the GHC-to-build's source tree # using our bootstrap GHC. hadrian ? import ../../tools/haskell/hadrian/make-hadrian.nix { inherit bootPkgs lib; } { inherit ghcSrc; ghcVersion = version; userSettings = hadrianUserSettings; }, # Whether to build sphinx documentation. # TODO(@sternenseemann): Hadrian ignores the --docs flag if finalStage = Stage1 enableDocs ? ( # Docs disabled if we are building on musl because it's a large task to keep # all `sphinx` dependencies building in this environment. !stdenv.buildPlatform.isMusl ), # Whether to disable the large address space allocator # necessary fix for iOS: https://www.reddit.com/r/haskell/comments/4ttdz1/building_an_osxi386_to_iosarm64_cross_compiler/d5qvd67/ disableLargeAddressSpace ? stdenv.targetPlatform.isiOS, # Whether to build an unregisterised version of GHC. # GHC will normally auto-detect whether it can do a registered build, but this # option will force it to do an unregistered build when set to true. # See https://gitlab.haskell.org/ghc/ghc/-/wikis/building/unregisterised enableUnregisterised ? false, }: assert !enableNativeBignum -> gmp != null; # GHC does not support building when all 3 platforms are different. assert stdenv.buildPlatform == stdenv.hostPlatform || stdenv.hostPlatform == stdenv.targetPlatform; # It is currently impossible to cross-compile GHC with Hadrian. assert lib.assertMsg (stdenv.buildPlatform == stdenv.hostPlatform) "GHC >= 9.6 can't be cross-compiled. If you meant to build a GHC cross-compiler, use `buildPackages`."; let inherit (stdenv) buildPlatform hostPlatform targetPlatform; # TODO(@Ericson2314) Make unconditional targetPrefix = lib.optionalString ( targetPlatform.config != hostPlatform.config ) "${targetPlatform.config}-"; # TODO(@sternenseemann): there's no stage0:exe:haddock target by default, # so haddock isn't available for GHC cross-compilers. Can we fix that? hasHaddock = stdenv.hostPlatform == stdenv.targetPlatform; hadrianSettings = # -fexternal-dynamic-refs apparently (because it's not clear from the # documentation) makes the GHC RTS able to load static libraries, which may # be needed for TemplateHaskell. This solution was described in # https://www.tweag.io/blog/2020-09-30-bazel-static-haskell # # Note `-fexternal-dynamic-refs` causes `undefined reference` errors when building GHC cross compiler for windows lib.optionals enableRelocatedStaticLibs [ "*.*.ghc.*.opts += -fPIC -fexternal-dynamic-refs" ] ++ lib.optionals targetPlatform.useAndroidPrebuilt [ "*.*.ghc.c.opts += -optc-std=gnu99" ] # Inform GHC that we can't load dynamic libraries which forces iserv-proxy to load static libraries. ++ lib.optionals targetPlatform.isStatic [ "*.ghc.cabal.configure.opts += --flags=-dynamic-system-linker" ]; # Splicer will pull out correct variations libDeps = platform: lib.optional enableTerminfo ncurses ++ lib.optionals (!targetPlatform.isGhcjs) [ libffi ] # Bindist configure script fails w/o elfutils in linker search path # https://gitlab.haskell.org/ghc/ghc/-/issues/22081 ++ lib.optional enableDwarf elfutils ++ lib.optional (!enableNativeBignum) gmp ++ lib.optional ( platform.libc != "glibc" && !targetPlatform.isWindows && !targetPlatform.isGhcjs && !targetPlatform.useAndroidPrebuilt ) libiconv; # TODO(@sternenseemann): is buildTarget LLVM unnecessary? # GHC doesn't seem to have {LLC,OPT}_HOST toolsForTarget = [ ( if targetPlatform.isGhcjs then pkgsBuildTarget.emscripten else pkgsBuildTarget.targetPackages.stdenv.cc ) ] ++ lib.optional useLLVM buildTargetLlvmPackages.llvm; buildCC = buildPackages.stdenv.cc; targetCC = builtins.head toolsForTarget; installCC = if targetPlatform.isGhcjs then pkgsHostTarget.emscripten else pkgsHostTarget.targetPackages.stdenv.cc; # toolPath calculates the absolute path to the name tool associated with a # given `stdenv.cc` derivation, i.e. it picks the correct derivation to take # the tool from (cc, cc.bintools, cc.bintools.bintools) and adds the correct # subpath of the tool. toolPath = name: cc: let tools = { "cc" = cc; "c++" = cc; as = cc.bintools; ar = cc.bintools; ranlib = cc.bintools; nm = cc.bintools; readelf = cc.bintools; objdump = cc.bintools; ld = cc.bintools; "ld.gold" = cc.bintools; windres = cc.bintools; otool = cc.bintools.bintools; # GHC needs install_name_tool on all darwin platforms. The same one can # be used on both platforms. It is safe to use with linker-generated # signatures because it will update the signatures automatically after # modifying the target binary. install_name_tool = cc.bintools.bintools; # strip on darwin is wrapped to enable deterministic mode. strip = # TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold" if stdenv.targetPlatform.isDarwin then cc.bintools else cc.bintools.bintools; # clang is used as an assembler on darwin with the LLVM backend clang = cc; } .${name}; in getToolExe tools name; # targetPrefix aware lib.getExe' getToolExe = drv: name: lib.getExe' drv "${drv.targetPrefix or ""}${name}"; # Use gold either following the default, or to avoid the BFD linker due to some bugs / perf issues. # But we cannot avoid BFD when using musl libc due to https://sourceware.org/bugzilla/show_bug.cgi?id=23856 # see #84670 and #49071 for more background. useLdGold = targetPlatform.linker == "gold" || ( targetPlatform.linker == "bfd" && (targetCC.bintools.bintools.hasGold or false) && !targetPlatform.isMusl ); # Makes debugging easier to see which variant is at play in `nix-store -q --tree`. variantSuffix = lib.concatStrings [ (lib.optionalString stdenv.hostPlatform.isMusl "-musl") (lib.optionalString enableNativeBignum "-native-bignum") ]; # These libraries are library dependencies of the standard libraries bundled # by GHC (core libs) users will link their compiled artifacts again. Thus, # they should be taken from targetPackages. # # We need to use pkgsHostTarget if we are cross compiling a native GHC compiler, # though (when native compiling GHC, pkgsHostTarget == targetPackages): # # 1. targetPackages would be empty(-ish) in this situation since we can't # execute cross compiled compilers in order to obtain the libraries # that would be in targetPackages. # 2. pkgsHostTarget is fine to use since hostPlatform == targetPlatform in this # situation. # 3. The core libs used by the final GHC (stage 2) for user artifacts are also # used to build stage 2 GHC itself, i.e. the core libs are both host and # target. targetLibs = { inherit (if hostPlatform != targetPlatform then targetPackages else pkgsHostTarget) elfutils gmp libffi ncurses numactl ; }; # Our Cabal compiler name haskellCompilerName = "ghc-${version}"; in stdenv.mkDerivation ( { pname = "${targetPrefix}ghc${variantSuffix}"; inherit version; # Useful as hadrianSettings often have spaces in them __structuredAttrs = true; src = ghcSrc; enableParallelBuilding = true; postPatch = '' patchShebangs --build . ''; # GHC is a bit confused on its cross terminology. # TODO(@sternenseemann): investigate coreutils dependencies and pass absolute paths preConfigure = '' for env in $(env | grep '^TARGET_' | sed -E 's|\+?=.*||'); do export "''${env#TARGET_}=''${!env}" done # No need for absolute paths since these tools only need to work during the build export CC_STAGE0="$CC_FOR_BUILD" export LD_STAGE0="$LD_FOR_BUILD" export AR_STAGE0="$AR_FOR_BUILD" # Stage0 (build->build) which builds stage 1 export GHC="${bootPkgs.ghc}/bin/ghc" # GHC is a bit confused on its cross terminology, as these would normally be # the *host* tools. export CC="${toolPath "cc" targetCC}" export CXX="${toolPath "c++" targetCC}" # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177 export LD="${toolPath "ld${lib.optionalString useLdGold ".gold"}" targetCC}" export AS="${toolPath "as" targetCC}" export AR="${toolPath "ar" targetCC}" export NM="${toolPath "nm" targetCC}" export RANLIB="${toolPath "ranlib" targetCC}" export READELF="${toolPath "readelf" targetCC}" export STRIP="${toolPath "strip" targetCC}" export OBJDUMP="${toolPath "objdump" targetCC}" '' + lib.optionalString (stdenv.targetPlatform.linker == "cctools") '' export OTOOL="${toolPath "otool" targetCC}" export INSTALL_NAME_TOOL="${toolPath "install_name_tool" targetCC}" '' + lib.optionalString useLLVM '' export LLC="${getToolExe buildTargetLlvmPackages.llvm "llc"}" export OPT="${getToolExe buildTargetLlvmPackages.llvm "opt"}" '' # LLVMAS should be a "specific LLVM compatible assembler" which needs to understand # assembly produced by LLVM. The easiest way to be sure is to use clang from the same # version as llc and opt. Note that the naming chosen by GHC is misleading, clang can # be used as an assembler, llvm-as converts IR into machine code. + lib.optionalString (useLLVM && lib.versionAtLeast version "9.10") '' export LLVMAS="${getToolExe buildTargetLlvmPackages.clang "clang"}" '' + lib.optionalString (useLLVM && stdenv.targetPlatform.isDarwin) '' # LLVM backend on Darwin needs clang: https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/codegens.html#llvm-code-generator-fllvm # The executable we specify via $CLANG is used as an assembler (exclusively, it seems, but this isn't # clarified in any user facing documentation). As such, it'll be called on assembly produced by $CC # which usually comes from the darwin stdenv. To prevent a situation where $CLANG doesn't understand # the assembly it is given, we need to make sure that it matches the LLVM version of $CC if possible. # It is unclear (at the time of writing 2024-09-01) whether $CC should match the LLVM version we use # for llc and opt which would require using a custom darwin stdenv for targetCC. # 2025-09-06: The existence of LLVMAS suggests that matching $CC is fine (correct?) here. export CLANG="${ if targetCC.isClang then toolPath "clang" targetCC else getToolExe buildTargetLlvmPackages.clang "clang" }" '' # Haddock and sphinx need a working locale + lib.optionalString (enableDocs || hasHaddock) ( '' export LANG="en_US.UTF-8" '' + lib.optionalString (stdenv.buildPlatform.libc == "glibc") '' export LOCALE_ARCHIVE="${buildPackages.glibcLocales}/lib/locale/locale-archive" '' ) + lib.optionalString (!stdenv.hostPlatform.isDarwin) '' export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}" '' + lib.optionalString stdenv.hostPlatform.isDarwin '' export NIX_LDFLAGS+=" -no_dtrace_dof" # GHC tries the host xattr /usr/bin/xattr by default which fails since it expects python to be 2.7 export XATTR=${lib.getBin xattr}/bin/xattr '' # If we are not using release tarballs, some files need to be generated using # the boot script. + lib.optionalString (rev != null) '' echo ${version} > VERSION echo ${rev} > GIT_COMMIT_ID ./boot '' + lib.optionalString targetPlatform.useAndroidPrebuilt '' sed -i -e '5i ,("armv7a-unknown-linux-androideabi", ("e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64", "cortex-a8", ""))' llvm-targets '' + lib.optionalString targetPlatform.isMusl '' echo "patching llvm-targets for musl targets..." echo "Cloning these existing '*-linux-gnu*' targets:" grep linux-gnu llvm-targets | sed 's/^/ /' echo "(go go gadget sed)" sed -i 's,\(^.*linux-\)gnu\(.*\)$,\0\n\1musl\2,' llvm-targets echo "llvm-targets now contains these '*-linux-musl*' targets:" grep linux-musl llvm-targets | sed 's/^/ /' echo "And now patching to preserve '-musleabi' as done with '-gnueabi'" # (aclocal.m4 is actual source, but patch configure as well since we don't re-gen) for x in configure aclocal.m4; do substituteInPlace $x \ --replace '*-android*|*-gnueabi*)' \ '*-android*|*-gnueabi*|*-musleabi*)' done '' # Need to make writable EM_CACHE for emscripten. The path in EM_CACHE must be absolute. # https://gitlab.haskell.org/ghc/ghc/-/wikis/javascript-backend#configure-fails-with-sub-word-sized-atomic-operations-not-available + lib.optionalString targetPlatform.isGhcjs '' export EM_CACHE="$(realpath $(mktemp -d emcache.XXXXXXXXXX))" cp -Lr ${ targetCC # == emscripten }/share/emscripten/cache/* "$EM_CACHE/" chmod u+rwX -R "$EM_CACHE" '' + '' hadrianFlags+=("-j$NIX_BUILD_CORES") ''; ${if targetPlatform.isGhcjs then "configureScript" else null} = "emconfigure ./configure"; # GHC currently ships an edited config.sub so ghcjs is accepted which we can not rollback ${if targetPlatform.isGhcjs then "dontUpdateAutotoolsGnuConfigScripts" else null} = true; # TODO(@Ericson2314): Always pass "--target" and always prefix. configurePlatforms = [ "build" "host" ] ++ lib.optional (targetPlatform != hostPlatform) "target"; # `--with` flags for libraries needed for RTS linker configureFlags = [ "--datadir=$doc/share/doc/ghc" ] ++ lib.optionals enableTerminfo [ "--with-curses-includes=${lib.getDev targetLibs.ncurses}/include" "--with-curses-libraries=${lib.getLib targetLibs.ncurses}/lib" ] ++ lib.optionals (libffi != null && !targetPlatform.isGhcjs) [ "--with-system-libffi" "--with-ffi-includes=${targetLibs.libffi.dev}/include" "--with-ffi-libraries=${targetLibs.libffi.out}/lib" ] ++ lib.optionals (targetPlatform == hostPlatform && !enableNativeBignum) [ "--with-gmp-includes=${targetLibs.gmp.dev}/include" "--with-gmp-libraries=${targetLibs.gmp.out}/lib" ] ++ lib.optionals (targetPlatform == hostPlatform && hostPlatform.libc != "glibc" && !targetPlatform.isWindows) [ "--with-iconv-includes=${libiconv}/include" "--with-iconv-libraries=${libiconv}/lib" ] ++ lib.optionals (targetPlatform != hostPlatform) [ "--enable-bootstrap-with-devel-snapshot" ] ++ lib.optionals useLdGold [ "CFLAGS=-fuse-ld=gold" "CONF_GCC_LINKER_OPTS_STAGE1=-fuse-ld=gold" "CONF_GCC_LINKER_OPTS_STAGE2=-fuse-ld=gold" ] ++ lib.optionals disableLargeAddressSpace [ "--disable-large-address-space" ] ++ lib.optionals enableDwarf [ "--enable-dwarf-unwind" "--with-libdw-includes=${lib.getDev targetLibs.elfutils}/include" "--with-libdw-libraries=${lib.getLib targetLibs.elfutils}/lib" ] ++ lib.optionals enableNuma [ "--enable-numa" "--with-libnuma-includes=${lib.getDev targetLibs.numactl}/include" "--with-libnuma-libraries=${lib.getLib targetLibs.numactl}/lib" ] ++ lib.optionals targetPlatform.isDarwin [ # Darwin uses llvm-ar. GHC will try to use `-L` with `ar` when it is `llvm-ar` # but it doesn’t currently work because Cabal never uses `-L` on Darwin. See: # https://gitlab.haskell.org/ghc/ghc/-/issues/23188 # https://github.com/haskell/cabal/issues/8882 "fp_cv_prog_ar_supports_dash_l=no" ] ++ lib.optionals enableUnregisterised [ "--enable-unregisterised" ] ++ lib.optionals (stdenv.buildPlatform.isAarch64 && stdenv.buildPlatform.isMusl && lib.versionOlder version "9.12") [ # The bootstrap binaries for aarch64 musl were built for the wrong triple. # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13182 "--enable-ignore-build-platform-mismatch" ]; # Make sure we never relax`$PATH` and hooks support for compatibility. strictDeps = true; # Don’t add -liconv to LDFLAGS automatically so that GHC will add it itself. dontAddExtraLibs = true; nativeBuildInputs = [ autoreconfHook perl hadrian bootPkgs.alex bootPkgs.happy bootPkgs.hscolour # Python is used in a few scripts invoked by hadrian to generate e.g. rts headers. python3 # Tool used to update GHC's settings file in postInstall bootPkgs.ghc-settings-edit ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ] ++ lib.optionals enableDocs [ sphinx ]; # For building runtime libs depsBuildTarget = toolsForTarget; # Everything the stage0 compiler needs to build stage1: CC, bintools, extra libs. # See also GHC, {CC,LD,AR}_STAGE0 in preConfigure. depsBuildBuild = [ # N.B. We do not declare bootPkgs.ghc in any of the stdenv.mkDerivation # dependency lists to prevent the bintools setup hook from adding ghc's # lib directory to the linker flags. Instead we tell configure about it # via the GHC environment variable. buildCC # stage0 builds terminfo unconditionally, so we always need ncurses ncurses ]; # Prevent stage0 ghc from leaking into the final result. This was an issue # with GHC 9.6. disallowedReferences = [ bootPkgs.ghc ]; buildInputs = [ bash ] ++ (libDeps hostPlatform); # stage0:ghc (i.e. stage1) doesn't need to link against libnuma, so it's target specific depsTargetTarget = map lib.getDev ( libDeps targetPlatform ++ lib.optionals enableNuma [ targetLibs.numactl ] ); depsTargetTargetPropagated = map (lib.getOutput "out") ( libDeps targetPlatform ++ lib.optionals enableNuma [ targetLibs.numactl ] ); hadrianFlags = [ "--flavour=${ghcFlavour}" "--bignum=${if enableNativeBignum then "native" else "gmp"}" "--docs=${if enableDocs then "no-sphinx-pdfs" else "no-sphinx"}" ] ++ lib.optionals (lib.versionAtLeast version "9.8") [ # In 9.14 this will be default with release flavour. # See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13444 "--hash-unit-ids" ] ++ hadrianSettings; buildPhase = '' runHook preBuild echo "hadrianFlags: ''${hadrianFlags[@]}" # We need to go via the bindist for installing hadrian "''${hadrianFlags[@]}" binary-dist-dir runHook postBuild ''; # required, because otherwise all symbols from HSffi.o are stripped, and # that in turn causes GHCi to abort stripDebugFlags = [ "-S" ] ++ lib.optional (!targetPlatform.isDarwin) "--keep-file-symbols"; checkTarget = "test"; hardeningDisable = [ "format" ]; # big-parallel allows us to build with more than 2 cores on # Hydra which already warrants a significant speedup requiredSystemFeatures = [ "big-parallel" ]; outputs = [ "out" "doc" ]; # We need to configure the bindist *again* before installing # https://gitlab.haskell.org/ghc/ghc/-/issues/22058 # TODO(@sternenseemann): it would be nice if the bindist could be an intermediate # derivation, but since it is > 2GB even on x86_64-linux, not a good idea? preInstall = '' pushd _build/bindist/* '' # the bindist configure script uses different env variables than the GHC configure script # see https://github.com/NixOS/nixpkgs/issues/267250 krank:ignore-line # https://gitlab.haskell.org/ghc/ghc/-/issues/24211 krank:ignore-line + lib.optionalString (stdenv.targetPlatform.linker == "cctools") '' export InstallNameToolCmd=$INSTALL_NAME_TOOL export OtoolCmd=$OTOOL '' # Replicate configurePhase + '' $configureScript "''${configureFlags[@]}" ''; postInstall = '' # leave bindist directory popd settingsFile="$out/lib/${targetPrefix}${haskellCompilerName}/lib/settings" # Make the installed GHC use the host->target tools. ghc-settings-edit "$settingsFile" \ "C compiler command" "${toolPath "cc" installCC}" \ "Haskell CPP command" "${toolPath "cc" installCC}" \ "C++ compiler command" "${toolPath "c++" installCC}" \ "ld command" "${toolPath "ld${lib.optionalString useLdGold ".gold"}" installCC}" \ "Merge objects command" "${toolPath "ld${lib.optionalString useLdGold ".gold"}" installCC}" \ "ar command" "${toolPath "ar" installCC}" \ "ranlib command" "${toolPath "ranlib" installCC}" '' + lib.optionalString (stdenv.targetPlatform.linker == "cctools") '' ghc-settings-edit "$settingsFile" \ "otool command" "${toolPath "otool" installCC}" \ "install_name_tool command" "${toolPath "install_name_tool" installCC}" '' + lib.optionalString useLLVM '' ghc-settings-edit "$settingsFile" \ "LLVM llc command" "${getToolExe llvmPackages.llvm "llc"}" \ "LLVM opt command" "${getToolExe llvmPackages.llvm "opt"}" '' # See comment for LLVMAS in preConfigure + lib.optionalString (useLLVM && lib.versionAtLeast version "9.10") '' ghc-settings-edit "$settingsFile" \ "LLVM llvm-as command" "${getToolExe llvmPackages.clang "clang"}" '' + lib.optionalString (useLLVM && stdenv.targetPlatform.isDarwin) '' ghc-settings-edit "$settingsFile" \ "LLVM clang command" "${ # See comment for CLANG in preConfigure if installCC.isClang then toolPath "clang" installCC else getToolExe llvmPackages.clang "clang" }" '' + lib.optionalString stdenv.targetPlatform.isWindows '' ghc-settings-edit "$settingsFile" \ "windres command" "${toolPath "windres" installCC}" '' + lib.optionalString (stdenv.targetPlatform.isGhcjs && lib.versionOlder version "9.12") '' ghc-settings-edit "$settingsFile" \ "JavaScript CPP command" "${toolPath "cc" installCC}" ghc-settings-edit "$settingsFile" \ "JavaScript CPP flags" "-E -CC -Wno-unicode -nostdinc" '' + '' # Install the bash completion file. install -Dm 644 utils/completion/ghc.bash $out/share/bash-completion/completions/${targetPrefix}ghc ''; passthru = { inherit bootPkgs targetPrefix haskellCompilerName; inherit llvmPackages; inherit enableShared; inherit hasHaddock; # Expose hadrian used for bootstrapping, for debugging purposes inherit hadrian; bootstrapAvailable = lib.meta.availableOn stdenv.buildPlatform bootPkgs.ghc; }; meta = { homepage = "http://haskell.org/ghc"; description = "Glasgow Haskell Compiler"; maintainers = with lib.maintainers; [ guibou ]; teams = [ lib.teams.haskell ]; timeout = 24 * 3600; platforms = lib.platforms.all; inherit (bootPkgs.ghc.meta) license; }; dontStrip = targetPlatform.useAndroidPrebuilt || targetPlatform.isWasm; } // lib.optionalAttrs targetPlatform.useAndroidPrebuilt { dontPatchELF = true; noAuditTmpdir = true; } )