mirror of
https://github.com/NixOS/nixpkgs.git
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32c8e793bc
Yesterday with @infinisil on #nixos, he pointed me to: peti/jailbreak-cabal#7 after a good deal of time wrangling through a package to make it work. The `nix-build -K` command, is very handy for debugging things like these, again I learnt from infinisil. And after much experimenting and looking through, it turned out that jailbreaking wasn't working as expected, and its documentation could point it out to avoid future confusion.
428 lines
18 KiB
Nix
428 lines
18 KiB
Nix
# TODO(@Ericson2314): Remove `pkgs` param, which is only used for
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# `buildStackProject`, `justStaticExecutables` and `checkUnusedPackages`
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{ pkgs, lib }:
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rec {
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/* This function takes a file like `hackage-packages.nix` and constructs
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a full package set out of that.
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*/
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makePackageSet = import ./make-package-set.nix;
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/* The function overrideCabal lets you alter the arguments to the
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mkDerivation function.
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Example:
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First, note how the aeson package is constructed in hackage-packages.nix:
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"aeson" = callPackage ({ mkDerivation, attoparsec, <snip>
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}:
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mkDerivation {
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pname = "aeson";
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<snip>
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homepage = "https://github.com/bos/aeson";
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})
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The mkDerivation function of haskellPackages will take care of putting
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the homepage in the right place, in meta.
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> haskellPackages.aeson.meta.homepage
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"https://github.com/bos/aeson"
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> x = haskell.lib.overrideCabal haskellPackages.aeson (old: { homepage = old.homepage + "#readme"; })
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> x.meta.homepage
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"https://github.com/bos/aeson#readme"
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*/
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overrideCabal = drv: f: (drv.override (args: args // {
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mkDerivation = drv: (args.mkDerivation drv).override f;
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})) // {
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overrideScope = scope: overrideCabal (drv.overrideScope scope) f;
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};
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# : Map Name (Either Path VersionNumber) -> HaskellPackageOverrideSet
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# Given a set whose values are either paths or version strings, produces
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# a package override set (i.e. (self: super: { etc. })) that sets
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# the packages named in the input set to the corresponding versions
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packageSourceOverrides =
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overrides: self: super: pkgs.lib.mapAttrs (name: src:
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let isPath = x: builtins.substring 0 1 (toString x) == "/";
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generateExprs = if isPath src
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then self.callCabal2nix
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else self.callHackage;
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in generateExprs name src {}) overrides;
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/* doCoverage modifies a haskell package to enable the generation
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and installation of a coverage report.
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See https://wiki.haskell.org/Haskell_program_coverage
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*/
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doCoverage = drv: overrideCabal drv (drv: { doCoverage = true; });
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/* dontCoverage modifies a haskell package to disable the generation
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and installation of a coverage report.
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*/
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dontCoverage = drv: overrideCabal drv (drv: { doCoverage = false; });
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/* doHaddock modifies a haskell package to enable the generation and
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installation of API documentation from code comments using the
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haddock tool.
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*/
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doHaddock = drv: overrideCabal drv (drv: { doHaddock = true; });
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/* dontHaddock modifies a haskell package to disable the generation and
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installation of API documentation from code comments using the
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haddock tool.
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*/
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dontHaddock = drv: overrideCabal drv (drv: { doHaddock = false; });
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/* doJailbreak enables the removal of version bounds from the cabal
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file. You may want to avoid this function.
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This is useful when a package reports that it can not be built
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due to version mismatches. In some cases, removing the version
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bounds entirely is an easy way to make a package build, but at
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the risk of breaking software in non-obvious ways now or in the
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future.
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Instead of jailbreaking, you can patch the cabal file.
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Note that jailbreaking at this time, doesn't lift bounds on
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conditional branches.
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https://github.com/peti/jailbreak-cabal/issues/7 has further details.
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*/
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doJailbreak = drv: overrideCabal drv (drv: { jailbreak = true; });
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/* dontJailbreak restores the use of the version bounds the check
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the use of dependencies in the package description.
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*/
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dontJailbreak = drv: overrideCabal drv (drv: { jailbreak = false; });
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/* doCheck enables dependency checking, compilation and execution
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of test suites listed in the package description file.
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*/
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doCheck = drv: overrideCabal drv (drv: { doCheck = true; });
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/* dontCheck disables dependency checking, compilation and execution
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of test suites listed in the package description file.
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*/
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dontCheck = drv: overrideCabal drv (drv: { doCheck = false; });
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/* doBenchmark enables dependency checking, compilation and execution
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for benchmarks listed in the package description file.
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*/
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doBenchmark = drv: overrideCabal drv (drv: { doBenchmark = true; });
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/* dontBenchmark disables dependency checking, compilation and execution
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for benchmarks listed in the package description file.
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*/
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dontBenchmark = drv: overrideCabal drv (drv: { doBenchmark = false; });
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/* doDistribute enables the distribution of binaries for the package
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via hydra.
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*/
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doDistribute = drv: overrideCabal drv (drv: { hydraPlatforms = drv.platforms or ["i686-linux" "x86_64-linux" "x86_64-darwin"]; });
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/* dontDistribute disables the distribution of binaries for the package
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via hydra.
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*/
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dontDistribute = drv: overrideCabal drv (drv: { hydraPlatforms = []; });
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/* appendConfigureFlag adds a single argument that will be passed to the
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cabal configure command, after the arguments that have been defined
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in the initial declaration or previous overrides.
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Example:
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> haskell.lib.appendConfigureFlag haskellPackages.servant "--profiling-detail=all-functions"
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*/
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appendConfigureFlag = drv: x: appendConfigureFlags drv [x];
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appendConfigureFlags = drv: xs: overrideCabal drv (drv: { configureFlags = (drv.configureFlags or []) ++ xs; });
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appendBuildFlag = drv: x: overrideCabal drv (drv: { buildFlags = (drv.buildFlags or []) ++ [x]; });
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appendBuildFlags = drv: xs: overrideCabal drv (drv: { buildFlags = (drv.buildFlags or []) ++ xs; });
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/* removeConfigureFlag drv x is a Haskell package like drv, but with
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all cabal configure arguments that are equal to x removed.
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> haskell.lib.removeConfigureFlag haskellPackages.servant "--verbose"
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*/
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removeConfigureFlag = drv: x: overrideCabal drv (drv: { configureFlags = lib.remove x (drv.configureFlags or []); });
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addBuildTool = drv: x: addBuildTools drv [x];
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addBuildTools = drv: xs: overrideCabal drv (drv: { buildTools = (drv.buildTools or []) ++ xs; });
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addExtraLibrary = drv: x: addExtraLibraries drv [x];
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addExtraLibraries = drv: xs: overrideCabal drv (drv: { extraLibraries = (drv.extraLibraries or []) ++ xs; });
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addBuildDepend = drv: x: addBuildDepends drv [x];
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addBuildDepends = drv: xs: overrideCabal drv (drv: { buildDepends = (drv.buildDepends or []) ++ xs; });
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addPkgconfigDepend = drv: x: addPkgconfigDepends drv [x];
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addPkgconfigDepends = drv: xs: overrideCabal drv (drv: { pkgconfigDepends = (drv.pkgconfigDepends or []) ++ xs; });
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addSetupDepend = drv: x: addSetupDepends drv [x];
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addSetupDepends = drv: xs: overrideCabal drv (drv: { setupHaskellDepends = (drv.setupHaskellDepends or []) ++ xs; });
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enableCabalFlag = drv: x: appendConfigureFlag (removeConfigureFlag drv "-f-${x}") "-f${x}";
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disableCabalFlag = drv: x: appendConfigureFlag (removeConfigureFlag drv "-f${x}") "-f-${x}";
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markBroken = drv: overrideCabal drv (drv: { broken = true; hydraPlatforms = []; });
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unmarkBroken = drv: overrideCabal drv (drv: { broken = false; });
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markBrokenVersion = version: drv: assert drv.version == version; markBroken drv;
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markUnbroken = drv: overrideCabal drv (drv: { broken = false; });
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enableLibraryProfiling = drv: overrideCabal drv (drv: { enableLibraryProfiling = true; });
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disableLibraryProfiling = drv: overrideCabal drv (drv: { enableLibraryProfiling = false; });
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enableExecutableProfiling = drv: overrideCabal drv (drv: { enableExecutableProfiling = true; });
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disableExecutableProfiling = drv: overrideCabal drv (drv: { enableExecutableProfiling = false; });
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enableSharedExecutables = drv: overrideCabal drv (drv: { enableSharedExecutables = true; });
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disableSharedExecutables = drv: overrideCabal drv (drv: { enableSharedExecutables = false; });
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enableSharedLibraries = drv: overrideCabal drv (drv: { enableSharedLibraries = true; });
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disableSharedLibraries = drv: overrideCabal drv (drv: { enableSharedLibraries = false; });
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enableDeadCodeElimination = drv: overrideCabal drv (drv: { enableDeadCodeElimination = true; });
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disableDeadCodeElimination = drv: overrideCabal drv (drv: { enableDeadCodeElimination = false; });
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enableStaticLibraries = drv: overrideCabal drv (drv: { enableStaticLibraries = true; });
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disableStaticLibraries = drv: overrideCabal drv (drv: { enableStaticLibraries = false; });
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enableSeparateBinOutput = drv: overrideCabal drv (drv: { enableSeparateBinOutput = true; });
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appendPatch = drv: x: appendPatches drv [x];
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appendPatches = drv: xs: overrideCabal drv (drv: { patches = (drv.patches or []) ++ xs; });
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doHyperlinkSource = drv: overrideCabal drv (drv: { hyperlinkSource = true; });
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dontHyperlinkSource = drv: overrideCabal drv (drv: { hyperlinkSource = false; });
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disableHardening = drv: flags: overrideCabal drv (drv: { hardeningDisable = flags; });
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/* Let Nix strip the binary files.
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* This removes debugging symbols.
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*/
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doStrip = drv: overrideCabal drv (drv: { dontStrip = false; });
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/* Stop Nix from stripping the binary files.
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* This keeps debugging symbols.
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*/
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dontStrip = drv: overrideCabal drv (drv: { dontStrip = true; });
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/* Useful for debugging segfaults with gdb.
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* This includes dontStrip.
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*/
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enableDWARFDebugging = drv:
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# -g: enables debugging symbols
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# --disable-*-stripping: tell GHC not to strip resulting binaries
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# dontStrip: see above
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appendConfigureFlag (dontStrip drv) "--ghc-options=-g --disable-executable-stripping --disable-library-stripping";
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/* Create a source distribution tarball like those found on hackage,
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instead of building the package.
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*/
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sdistTarball = pkg: lib.overrideDerivation pkg (drv: {
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name = "${drv.pname}-source-${drv.version}";
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# Since we disable the haddock phase, we also need to override the
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# outputs since the separate doc output will not be produced.
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outputs = ["out"];
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buildPhase = "./Setup sdist";
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haddockPhase = ":";
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checkPhase = ":";
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installPhase = "install -D dist/${drv.pname}-*.tar.gz $out/${drv.pname}-${drv.version}.tar.gz";
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fixupPhase = ":";
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});
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/* Use the gold linker. It is a linker for ELF that is designed
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"to run as fast as possible on modern systems"
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*/
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linkWithGold = drv : appendConfigureFlag drv
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"--ghc-option=-optl-fuse-ld=gold --ld-option=-fuse-ld=gold --with-ld=ld.gold";
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/* link executables statically against haskell libs to reduce
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closure size
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*/
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justStaticExecutables = drv: overrideCabal drv (drv: {
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enableSharedExecutables = false;
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enableLibraryProfiling = false;
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isLibrary = false;
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doHaddock = false;
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postFixup = "rm -rf $out/lib $out/nix-support $out/share/doc";
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});
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/* Build a source distribution tarball instead of using the source files
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directly. The effect is that the package is built as if it were published
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on hackage. This can be used as a test for the source distribution,
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assuming the build fails when packaging mistakes are in the cabal file.
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*/
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buildFromSdist = pkg: overrideCabal pkg (drv: {
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src = "${sdistTarball pkg}/${pkg.pname}-${pkg.version}.tar.gz";
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# Revising and jailbreaking the cabal file has been handled in sdistTarball
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revision = null;
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editedCabalFile = null;
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jailbreak = false;
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});
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/* Build the package in a strict way to uncover potential problems.
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This includes buildFromSdist and failOnAllWarnings.
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*/
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buildStrictly = pkg: buildFromSdist (failOnAllWarnings pkg);
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/* Disable core optimizations, significantly speeds up build time */
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disableOptimization = pkg: appendConfigureFlag pkg "--disable-optimization";
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/* Turn on most of the compiler warnings and fail the build if any
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of them occur. */
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failOnAllWarnings = drv: appendConfigureFlag drv "--ghc-option=-Wall --ghc-option=-Werror";
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/* Add a post-build check to verify that dependencies declared in
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the cabal file are actually used.
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The first attrset argument can be used to configure the strictness
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of this check and a list of ignored package names that would otherwise
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cause false alarms.
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*/
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checkUnusedPackages =
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{ ignoreEmptyImports ? false
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, ignoreMainModule ? false
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, ignorePackages ? []
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} : drv :
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overrideCabal (appendConfigureFlag drv "--ghc-option=-ddump-minimal-imports") (_drv: {
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postBuild = with lib;
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let args = concatStringsSep " " (
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optional ignoreEmptyImports "--ignore-empty-imports" ++
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optional ignoreMainModule "--ignore-main-module" ++
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map (pkg: "--ignore-package ${pkg}") ignorePackages
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);
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in "${pkgs.haskellPackages.packunused}/bin/packunused" +
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optionalString (args != "") " ${args}";
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});
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buildStackProject = pkgs.callPackage ./generic-stack-builder.nix { };
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/* Add a dummy command to trigger a build despite an equivalent
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earlier build that is present in the store or cache.
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*/
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triggerRebuild = drv: i: overrideCabal drv (drv: { postUnpack = ": trigger rebuild ${toString i}"; });
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/* Override the sources for the package and optionaly the version.
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This also takes of removing editedCabalFile.
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*/
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overrideSrc = drv: { src, version ? drv.version }:
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overrideCabal drv (_: { inherit src version; editedCabalFile = null; });
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# Get all of the build inputs of a haskell package, divided by category.
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getBuildInputs = p: p.getBuildInputs;
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# Extract the haskell build inputs of a haskell package.
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# This is useful to build environments for developing on that
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# package.
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getHaskellBuildInputs = p: (getBuildInputs p).haskellBuildInputs;
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# Under normal evaluation, simply return the original package. Under
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# nix-shell evaluation, return a nix-shell optimized environment.
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shellAware = p: if lib.inNixShell then p.env else p;
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ghcInfo = ghc:
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rec { isCross = (ghc.cross or null) != null;
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isGhcjs = ghc.isGhcjs or false;
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nativeGhc = if isCross || isGhcjs
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then ghc.bootPkgs.ghc
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else ghc;
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};
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### mkDerivation helpers
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# These allow external users of a haskell package to extract
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# information about how it is built in the same way that the
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# generic haskell builder does, by reusing the same functions.
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# Each function here has the same interface as mkDerivation and thus
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# can be called for a given package simply by overriding the
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# mkDerivation argument it used. See getHaskellBuildInputs above for
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# an example of this.
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# Some information about which phases should be run.
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controlPhases = ghc: let inherit (ghcInfo ghc) isCross; in
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{ doCheck ? !isCross && (lib.versionOlder "7.4" ghc.version)
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, doBenchmark ? false
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, ...
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}: { inherit doCheck doBenchmark; };
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# Utility to convert a directory full of `cabal2nix`-generated files into a
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# package override set
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#
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# packagesFromDirectory : { directory : Directory, ... } -> HaskellPackageOverrideSet
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packagesFromDirectory =
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{ directory, ... }:
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self: super:
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let
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haskellPaths = builtins.attrNames (builtins.readDir directory);
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toKeyVal = file: {
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name = builtins.replaceStrings [ ".nix" ] [ "" ] file;
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value = self.callPackage (directory + "/${file}") { };
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};
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in
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builtins.listToAttrs (map toKeyVal haskellPaths);
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addOptparseApplicativeCompletionScripts = exeName: pkg:
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builtins.trace "addOptparseApplicativeCompletionScripts is deprecated in favor of generateOptparseApplicativeCompletion. Please change ${pkg.name} to use the latter or its plural form."
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(generateOptparseApplicativeCompletion exeName pkg);
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/*
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Modify a Haskell package to add shell completion scripts for the
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given executable produced by it. These completion scripts will be
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picked up automatically if the resulting derivation is installed,
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e.g. by `nix-env -i`.
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Invocation:
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generateOptparseApplicativeCompletions command pkg
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command: name of an executable
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pkg: Haskell package that builds the executables
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*/
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generateOptparseApplicativeCompletion = exeName: pkg: overrideCabal pkg (drv: {
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postInstall = (drv.postInstall or "") + ''
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bashCompDir="$out/share/bash-completion/completions"
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zshCompDir="$out/share/zsh/vendor-completions"
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fishCompDir="$out/share/fish/vendor_completions.d"
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mkdir -p "$bashCompDir" "$zshCompDir" "$fishCompDir"
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"$out/bin/${exeName}" --bash-completion-script "$out/bin/${exeName}" >"$bashCompDir/${exeName}"
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"$out/bin/${exeName}" --zsh-completion-script "$out/bin/${exeName}" >"$zshCompDir/_${exeName}"
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"$out/bin/${exeName}" --fish-completion-script "$out/bin/${exeName}" >"$fishCompDir/${exeName}.fish"
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# Sanity check
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grep -F ${exeName} <$bashCompDir/${exeName} >/dev/null || {
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echo 'Could not find ${exeName} in completion script.'
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exit 1
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}
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'';
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});
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/*
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Modify a Haskell package to add shell completion scripts for the
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given executables produced by it. These completion scripts will be
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picked up automatically if the resulting derivation is installed,
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e.g. by `nix-env -i`.
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Invocation:
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generateOptparseApplicativeCompletions commands pkg
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commands: name of an executable
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pkg: Haskell package that builds the executables
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*/
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generateOptparseApplicativeCompletions = commands: pkg:
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pkgs.lib.foldr generateOptparseApplicativeCompletion pkg commands;
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# Don't fail at configure time if there are multiple versions of the
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# same package in the (recursive) dependencies of the package being
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# built. Will delay failures, if any, to compile time.
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allowInconsistentDependencies = drv: overrideCabal drv (drv: {
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allowInconsistentDependencies = true;
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});
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}
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