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https://github.com/NixOS/nixpkgs.git
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b0b5ef7286
With removeUnknownConfigureFlags, it's impossible to express a package that needs --enable-static, but will not accept --disable-shared, without overriding the result of removeUnknownConfigureFlags _again_ in pkgs/top-level/static.nix. It would be much better (and more in line with the rest of Nixpkgs) if we encoded changes needed for static builds in package definitions themselves, rather than in an ever-expanding list in static.nix. This is especially true when doing it in static.nix is going to require multiple overrides to express what could be expressed with stdenv options. So as a step in that direction, and to fix the problem described above, here I replace removeUnknownConfigureFlags with a new stdenv option, dontAddStaticConfigureFlags. With this mechanism, a package that needs one but not both of the flags just needs to set dontAddStaticConfigureFlags and then set up configureFlags manually based on stdenv.hostPlatform.isStatic.
215 lines
7.1 KiB
Nix
215 lines
7.1 KiB
Nix
/* This file contains various functions that take a stdenv and return
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a new stdenv with different behaviour, e.g. using a different C
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compiler. */
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pkgs:
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rec {
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# Override the compiler in stdenv for specific packages.
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overrideCC = stdenv: cc: stdenv.override { allowedRequisites = null; cc = cc; };
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# Add some arbitrary packages to buildInputs for specific packages.
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# Used to override packages in stdenv like Make. Should not be used
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# for other dependencies.
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overrideInStdenv = stdenv: pkgs:
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stdenv.override (prev: { allowedRequisites = null; extraBuildInputs = (prev.extraBuildInputs or []) ++ pkgs; });
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# Override the setup script of stdenv. Useful for testing new
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# versions of the setup script without causing a rebuild of
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# everything.
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#
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# Example:
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# randomPkg = import ../bla { ...
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# stdenv = overrideSetup stdenv ../stdenv/generic/setup-latest.sh;
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# };
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overrideSetup = stdenv: setupScript: stdenv.override { inherit setupScript; };
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# Return a modified stdenv that tries to build statically linked
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# binaries.
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makeStaticBinaries = stdenv:
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let stdenv' = if stdenv.hostPlatform.libc != "glibc" then stdenv else
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stdenv.override (prev: {
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extraBuildInputs = (prev.extraBuildInputs or []) ++ [
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stdenv.glibc.static
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];
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});
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in stdenv' //
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{ mkDerivation = args:
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if stdenv'.hostPlatform.isDarwin
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then throw "Cannot build fully static binaries on Darwin/macOS"
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else stdenv'.mkDerivation (args // {
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NIX_CFLAGS_LINK = toString (args.NIX_CFLAGS_LINK or "") + " -static";
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} // pkgs.lib.optionalAttrs (!(args.dontAddStaticConfigureFlags or false)) {
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configureFlags = (args.configureFlags or []) ++ [
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"--disable-shared" # brrr...
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];
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});
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};
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# Return a modified stdenv that builds static libraries instead of
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# shared libraries.
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makeStaticLibraries = stdenv: stdenv //
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{ mkDerivation = args: stdenv.mkDerivation (args // {
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dontDisableStatic = true;
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} // pkgs.lib.optionalAttrs (!(args.dontAddStaticConfigureFlags or false)) {
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configureFlags = (args.configureFlags or []) ++ [
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"--enable-static"
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"--disable-shared"
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];
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cmakeFlags = (args.cmakeFlags or []) ++ [ "-DBUILD_SHARED_LIBS:BOOL=OFF" ];
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mesonFlags = (args.mesonFlags or []) ++ [ "-Ddefault_library=static" ];
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});
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};
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/* Modify a stdenv so that all buildInputs are implicitly propagated to
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consuming derivations
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*/
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propagateBuildInputs = stdenv: stdenv //
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{ mkDerivation = args: stdenv.mkDerivation (args // {
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propagatedBuildInputs = (args.propagatedBuildInputs or []) ++ (args.buildInputs or []);
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buildInputs = [];
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});
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};
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/* Modify a stdenv so that the specified attributes are added to
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every derivation returned by its mkDerivation function.
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Example:
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stdenvNoOptimise =
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addAttrsToDerivation
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{ NIX_CFLAGS_COMPILE = "-O0"; }
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stdenv;
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*/
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addAttrsToDerivation = extraAttrs: stdenv: stdenv //
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{ mkDerivation = args: stdenv.mkDerivation (args // extraAttrs); };
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/* Return a modified stdenv that builds packages with GCC's coverage
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instrumentation. The coverage note files (*.gcno) are stored in
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$out/.build, along with the source code of the package, to enable
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programs like lcov to produce pretty-printed reports.
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*/
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addCoverageInstrumentation = stdenv:
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overrideInStdenv stdenv [ pkgs.enableGCOVInstrumentation pkgs.keepBuildTree ];
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/* Replace the meta.maintainers field of a derivation. This is useful
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when you want to fork to update some packages without disturbing other
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developers.
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e.g.: in all-packages.nix:
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# remove all maintainers.
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defaultStdenv = replaceMaintainersField allStdenvs.stdenv pkgs [];
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*/
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replaceMaintainersField = stdenv: pkgs: maintainers: stdenv //
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{ mkDerivation = args:
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pkgs.lib.recursiveUpdate
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(stdenv.mkDerivation args)
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{ meta.maintainers = maintainers; };
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};
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/* Use the trace output to report all processed derivations with their
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license name.
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*/
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traceDrvLicenses = stdenv: stdenv //
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{ mkDerivation = args:
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let
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pkg = stdenv.mkDerivation args;
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printDrvPath = val: let
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drvPath = builtins.unsafeDiscardStringContext pkg.drvPath;
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license = pkg.meta.license or null;
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in
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builtins.trace "@:drv:${toString drvPath}:${builtins.toString license}:@" val;
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in pkg // {
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outPath = printDrvPath pkg.outPath;
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drvPath = printDrvPath pkg.drvPath;
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};
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};
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/* Abort if the license predicate is not verified for a derivation
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declared with mkDerivation.
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One possible predicate to avoid all non-free packages can be achieved
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with the following function:
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isFree = license: with builtins;
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if license == null then true
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else if isList license then lib.all isFree license
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else license != "non-free" && license != "unfree";
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This adapter can be defined on the defaultStdenv definition. You can
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use it by patching the all-packages.nix file or by using the override
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feature of ~/.config/nixpkgs/config.nix .
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*/
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validateLicenses = licensePred: stdenv: stdenv //
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{ mkDerivation = args:
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let
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pkg = stdenv.mkDerivation args;
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drv = builtins.unsafeDiscardStringContext pkg.drvPath;
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license =
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pkg.meta.license or
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# Fixed-output derivations such as source tarballs usually
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# don't have licensing information, but that's OK.
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(pkg.outputHash or
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(builtins.trace
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"warning: ${drv} lacks licensing information" null));
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validate = arg:
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if licensePred license then arg
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else abort ''
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while building ${drv}:
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license `${builtins.toString license}' does not pass the predicate.
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'';
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in pkg // {
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outPath = validate pkg.outPath;
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drvPath = validate pkg.drvPath;
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};
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};
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/* Modify a stdenv so that it produces debug builds; that is,
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binaries have debug info, and compiler optimisations are
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disabled. */
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keepDebugInfo = stdenv: stdenv //
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{ mkDerivation = args: stdenv.mkDerivation (args // {
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dontStrip = true;
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NIX_CFLAGS_COMPILE = toString (args.NIX_CFLAGS_COMPILE or "") + " -ggdb -Og";
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});
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};
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/* Modify a stdenv so that it uses the Gold linker. */
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useGoldLinker = stdenv: stdenv //
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{ mkDerivation = args: stdenv.mkDerivation (args // {
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NIX_CFLAGS_LINK = toString (args.NIX_CFLAGS_LINK or "") + " -fuse-ld=gold";
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});
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};
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/* Modify a stdenv so that it builds binaries optimized specifically
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for the machine they are built on.
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WARNING: this breaks purity! */
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impureUseNativeOptimizations = stdenv: stdenv //
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{ mkDerivation = args: stdenv.mkDerivation (args // {
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NIX_CFLAGS_COMPILE = toString (args.NIX_CFLAGS_COMPILE or "") + " -march=native";
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NIX_ENFORCE_NO_NATIVE = false;
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preferLocalBuild = true;
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allowSubstitutes = false;
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});
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};
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}
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