662 lines
26 KiB
Nix
662 lines
26 KiB
Nix
{ lib
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, stdenv
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, fetchurl
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, fetchpatch
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, fetchgit
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# build dependencies
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, autoconf-archive
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, autoreconfHook
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, nukeReferences
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, pkg-config
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, python-setup-hook
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# runtime dependencies
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, bzip2
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, expat
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, libffi
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, libxcrypt
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, mpdecimal
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, ncurses
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, openssl
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, sqlite
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, xz
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, zlib
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# platform-specific dependencies
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, bash
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, configd
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, darwin
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, windows
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# optional dependencies
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, bluezSupport ? false, bluez
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, mimetypesSupport ? true, mailcap
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, tzdata
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, withGdbm ? !stdenv.hostPlatform.isWindows, gdbm
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, withReadline ? !stdenv.hostPlatform.isWindows, readline
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, x11Support ? false, tcl, tk, tclPackages, libX11, xorgproto
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# splicing/cross
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, pythonAttr ? "python${sourceVersion.major}${sourceVersion.minor}"
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, self
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, pkgsBuildBuild
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, pkgsBuildHost
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, pkgsBuildTarget
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, pkgsHostHost
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, pkgsTargetTarget
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# build customization
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, sourceVersion
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, hash
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, passthruFun
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, stripConfig ? false
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, stripIdlelib ? false
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, stripTests ? false
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, stripTkinter ? false
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, rebuildBytecode ? true
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, stripBytecode ? true
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, includeSiteCustomize ? true
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, static ? stdenv.hostPlatform.isStatic
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, enableFramework ? false
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, noldconfigPatch ? ./. + "/${sourceVersion.major}.${sourceVersion.minor}/no-ldconfig.patch"
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, enableGIL ? true
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# pgo (not reproducible) + -fno-semantic-interposition
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# https://docs.python.org/3/using/configure.html#cmdoption-enable-optimizations
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, enableOptimizations ? false
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# improves performance, but remains reproducible
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, enableNoSemanticInterposition ? true
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# enabling LTO on 32bit arch causes downstream packages to fail when linking
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, enableLTO ? stdenv.hostPlatform.isDarwin || (stdenv.hostPlatform.is64bit && stdenv.hostPlatform.isLinux)
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# enable asserts to ensure the build remains reproducible
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, reproducibleBuild ? false
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# for the Python package set
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, packageOverrides ? (self: super: {})
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# tests
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, testers
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} @ inputs:
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# Note: this package is used for bootstrapping fetchurl, and thus
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# cannot use fetchpatch! All mutable patches (generated by GitHub or
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# cgit) that are needed here should be included directly in Nixpkgs as
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# files.
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assert x11Support -> tcl != null
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&& tk != null
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&& xorgproto != null
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&& libX11 != null;
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assert bluezSupport -> bluez != null;
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assert lib.assertMsg (enableFramework -> stdenv.hostPlatform.isDarwin)
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"Framework builds are only supported on Darwin.";
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assert lib.assertMsg (reproducibleBuild -> stripBytecode)
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"Deterministic builds require stripping bytecode.";
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assert lib.assertMsg (reproducibleBuild -> (!enableOptimizations))
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"Deterministic builds are not achieved when optimizations are enabled.";
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assert lib.assertMsg (reproducibleBuild -> (!rebuildBytecode))
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"Deterministic builds are not achieved when (default unoptimized) bytecode is created.";
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let
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inherit (lib)
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concatMapStringsSep
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concatStringsSep
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enableFeature
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getDev
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getLib
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optionals
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optionalString
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replaceStrings
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versionOlder
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;
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# mixes libc and libxcrypt headers and libs and causes segfaults on importing crypt
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libxcrypt = if stdenv.hostPlatform.isFreeBSD then null else inputs.libxcrypt;
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buildPackages = pkgsBuildHost;
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inherit (passthru) pythonOnBuildForHost;
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tzdataSupport = tzdata != null && passthru.pythonAtLeast "3.9";
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passthru = let
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# When we override the interpreter we also need to override the spliced versions of the interpreter
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# bluez is excluded manually to break an infinite recursion.
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inputs' = lib.filterAttrs (n: v: n != "bluez" && n != "passthruFun" && ! lib.isDerivation v) inputs;
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override = attr: let python = attr.override (inputs' // { self = python; }); in python;
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in passthruFun rec {
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inherit self sourceVersion packageOverrides;
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implementation = "cpython";
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libPrefix = "python${pythonVersion}${lib.optionalString (!enableGIL) "t"}";
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executable = libPrefix;
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pythonVersion = with sourceVersion; "${major}.${minor}";
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sitePackages = "lib/${libPrefix}/site-packages";
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inherit hasDistutilsCxxPatch pythonAttr;
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pythonOnBuildForBuild = override pkgsBuildBuild.${pythonAttr};
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pythonOnBuildForHost = override pkgsBuildHost.${pythonAttr};
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pythonOnBuildForTarget = override pkgsBuildTarget.${pythonAttr};
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pythonOnHostForHost = override pkgsHostHost.${pythonAttr};
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pythonOnTargetForTarget = lib.optionalAttrs (lib.hasAttr pythonAttr pkgsTargetTarget) (override pkgsTargetTarget.${pythonAttr});
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};
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version = with sourceVersion; "${major}.${minor}.${patch}${suffix}";
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nativeBuildInputs = [
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nukeReferences
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] ++ optionals (!stdenv.hostPlatform.isDarwin) [
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autoconf-archive # needed for AX_CHECK_COMPILE_FLAG
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autoreconfHook
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pkg-config
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] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
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buildPackages.stdenv.cc
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pythonOnBuildForHost
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] ++ optionals (stdenv.cc.isClang && (!stdenv.hostPlatform.useAndroidPrebuilt or false) && (enableLTO || enableOptimizations)) [
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stdenv.cc.cc.libllvm.out
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];
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buildInputs = lib.filter (p: p != null) ([
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bzip2
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expat
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libffi
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libxcrypt
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mpdecimal
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ncurses
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openssl
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sqlite
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xz
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zlib
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] ++ optionals bluezSupport [
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bluez
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] ++ optionals enableFramework [
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darwin.apple_sdk.frameworks.Cocoa
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] ++ optionals stdenv.hostPlatform.isMinGW [
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windows.dlfcn
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windows.mingw_w64_pthreads
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] ++ optionals stdenv.hostPlatform.isDarwin [
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configd
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] ++ optionals tzdataSupport [
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tzdata
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] ++ optionals withGdbm [
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gdbm
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] ++ optionals withReadline [
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readline
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] ++ optionals x11Support [
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libX11
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tcl
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tk
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xorgproto
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]);
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hasDistutilsCxxPatch = !(stdenv.cc.isGNU or false);
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pythonOnBuildForHostInterpreter = if stdenv.hostPlatform == stdenv.buildPlatform then
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"$out/bin/python"
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else pythonOnBuildForHost.interpreter;
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src = fetchurl {
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url = with sourceVersion; "https://www.python.org/ftp/python/${major}.${minor}.${patch}/Python-${version}.tar.xz";
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inherit hash;
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};
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# win32 is added by Fedora’s patch
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machdep = if stdenv.hostPlatform.isWindows then
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"win32"
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else
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stdenv.hostPlatform.parsed.kernel.name;
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# https://github.com/python/cpython/blob/e488e300f5c01289c10906c2e53a8e43d6de32d8/configure.ac#L428
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# The configure script uses "arm" as the CPU name for all 32-bit ARM
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# variants when cross-compiling, but native builds include the version
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# suffix, so we do the same.
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pythonHostPlatform = let
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cpu = {
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# According to PEP600, Python's name for the Power PC
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# architecture is "ppc", not "powerpc". Without the Rosetta
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# Stone below, the PEP600 requirement that "${ARCH} matches
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# the return value from distutils.util.get_platform()" fails.
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# https://peps.python.org/pep-0600/
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powerpc = "ppc";
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powerpcle = "ppcle";
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powerpc64 = "ppc64";
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powerpc64le = "ppc64le";
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}.${stdenv.hostPlatform.parsed.cpu.name} or stdenv.hostPlatform.parsed.cpu.name;
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in "${machdep}-${cpu}";
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execSuffix = stdenv.hostPlatform.extensions.executable;
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in with passthru; stdenv.mkDerivation (finalAttrs: {
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pname = "python3";
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inherit src version;
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inherit nativeBuildInputs;
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buildInputs = lib.optionals (!stdenv.hostPlatform.isWindows) [
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bash # only required for patchShebangs
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] ++ buildInputs;
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prePatch = optionalString stdenv.hostPlatform.isDarwin ''
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substituteInPlace configure --replace-fail '`/usr/bin/arch`' '"i386"'
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'' + optionalString (pythonOlder "3.9" && stdenv.hostPlatform.isDarwin && x11Support) ''
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# Broken on >= 3.9; replaced with ./3.9/darwin-tcl-tk.patch
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substituteInPlace setup.py --replace-fail /Library/Frameworks /no-such-path
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'';
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patches = [
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# Disable the use of ldconfig in ctypes.util.find_library (since
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# ldconfig doesn't work on NixOS), and don't use
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# ctypes.util.find_library during the loading of the uuid module
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# (since it will do a futile invocation of gcc (!) to find
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# libuuid, slowing down program startup a lot).
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noldconfigPatch
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] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform && stdenv.hostPlatform.isFreeBSD) [
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# Cross compilation only supports a limited number of "known good"
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# configurations. If you're reading this and it's been a long time
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# since this diff, consider submitting this patch upstream!
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./freebsd-cross.patch
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] ++ optionals (pythonOlder "3.13") [
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# Make sure that the virtualenv activation scripts are
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# owner-writable, so venvs can be recreated without permission
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# errors.
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./virtualenv-permissions.patch
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] ++ optionals (pythonAtLeast "3.13") [
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./3.13/virtualenv-permissions.patch
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] ++ optionals mimetypesSupport [
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# Make the mimetypes module refer to the right file
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./mimetypes.patch
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] ++ optionals (pythonAtLeast "3.7" && pythonOlder "3.11") [
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# Fix darwin build https://bugs.python.org/issue34027
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./3.7/darwin-libutil.patch
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] ++ optionals (pythonAtLeast "3.11") [
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./3.11/darwin-libutil.patch
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] ++ optionals (pythonAtLeast "3.9" && pythonOlder "3.11" && stdenv.hostPlatform.isDarwin) [
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# Stop checking for TCL/TK in global macOS locations
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./3.9/darwin-tcl-tk.patch
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] ++ optionals (hasDistutilsCxxPatch && pythonOlder "3.12") [
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# Fix for http://bugs.python.org/issue1222585
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# Upstream distutils is calling C compiler to compile C++ code, which
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# only works for GCC and Apple Clang. This makes distutils to call C++
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# compiler when needed.
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(
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if pythonAtLeast "3.7" && pythonOlder "3.11" then
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./3.7/python-3.x-distutils-C++.patch
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else if pythonAtLeast "3.11" then
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./3.11/python-3.x-distutils-C++.patch
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else
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fetchpatch {
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url = "https://bugs.python.org/file48016/python-3.x-distutils-C++.patch";
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sha256 = "1h18lnpx539h5lfxyk379dxwr8m2raigcjixkf133l4xy3f4bzi2";
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}
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)
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] ++ optionals (pythonAtLeast "3.7" && pythonOlder "3.12") [
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# LDSHARED now uses $CC instead of gcc. Fixes cross-compilation of extension modules.
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./3.8/0001-On-all-posix-systems-not-just-Darwin-set-LDSHARED-if.patch
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# Use sysconfigdata to find headers. Fixes cross-compilation of extension modules.
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./3.7/fix-finding-headers-when-cross-compiling.patch
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] ++ optionals (pythonOlder "3.12") [
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# https://github.com/python/cpython/issues/90656
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./loongarch-support.patch
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] ++ optionals (pythonAtLeast "3.11" && pythonOlder "3.13") [
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# backport fix for https://github.com/python/cpython/issues/95855
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./platform-triplet-detection.patch
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] ++ optionals (stdenv.hostPlatform.isMinGW) (let
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# https://src.fedoraproject.org/rpms/mingw-python3
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mingw-patch = fetchgit {
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name = "mingw-python-patches";
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url = "https://src.fedoraproject.org/rpms/mingw-python3.git";
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rev = "45c45833ab9e5480ad0ae00778a05ebf35812ed4"; # for python 3.11.5 at the time of writing.
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sha256 = "sha256-KIyNvO6MlYTrmSy9V/DbzXm5OsIuyT/BEpuo7Umm9DI=";
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};
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in [
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"${mingw-patch}/*.patch"
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]);
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postPatch = optionalString (!stdenv.hostPlatform.isWindows) ''
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substituteInPlace Lib/subprocess.py \
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--replace-fail "'/bin/sh'" "'${bash}/bin/sh'"
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'' + optionalString mimetypesSupport ''
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substituteInPlace Lib/mimetypes.py \
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--replace-fail "@mime-types@" "${mailcap}"
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'' + optionalString (pythonOlder "3.13" && x11Support && ((tclPackages.tix or null) != null)) ''
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substituteInPlace "Lib/tkinter/tix.py" --replace-fail \
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"os.environ.get('TIX_LIBRARY')" \
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"os.environ.get('TIX_LIBRARY') or '${tclPackages.tix}/lib'"
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'';
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env = {
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CPPFLAGS = concatStringsSep " " (map (p: "-I${getDev p}/include") buildInputs);
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LDFLAGS = concatStringsSep " " (map (p: "-L${getLib p}/lib") buildInputs);
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LIBS = "${optionalString (!stdenv.hostPlatform.isDarwin) "-lcrypt"}";
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NIX_LDFLAGS = lib.optionalString (stdenv.cc.isGNU && !stdenv.hostPlatform.isStatic) ({
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"glibc" = "-lgcc_s";
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"musl" = "-lgcc_eh";
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}."${stdenv.hostPlatform.libc}" or "");
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# Determinism: We fix the hashes of str, bytes and datetime objects.
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PYTHONHASHSEED=0;
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};
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# https://docs.python.org/3/using/configure.html
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configureFlags = [
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"--without-ensurepip"
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"--with-system-expat"
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"--with-system-libmpdec"
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] ++ optionals (openssl != null) [
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"--with-openssl=${openssl.dev}"
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] ++ optionals tzdataSupport [
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"--with-tzpath=${tzdata}/share/zoneinfo"
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] ++ optionals (execSuffix != "") [
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"--with-suffix=${execSuffix}"
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] ++ optionals enableLTO [
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"--with-lto"
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] ++ optionals (!static && !enableFramework) [
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"--enable-shared"
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] ++ optionals enableFramework [
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"--enable-framework=${placeholder "out"}/Library/Frameworks"
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] ++ optionals (pythonAtLeast "3.13") [
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(enableFeature enableGIL "gil")
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] ++ optionals enableOptimizations [
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"--enable-optimizations"
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] ++ optionals (stdenv.hostPlatform.isDarwin && configd == null) [
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# Make conditional on Darwin for now to avoid causing Linux rebuilds.
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"py_cv_module__scproxy=n/a"
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] ++ optionals (sqlite != null) [
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"--enable-loadable-sqlite-extensions"
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] ++ optionals (libxcrypt != null) [
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"CFLAGS=-I${libxcrypt}/include"
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"LIBS=-L${libxcrypt}/lib"
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] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
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"ac_cv_buggy_getaddrinfo=no"
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# Assume little-endian IEEE 754 floating point when cross compiling
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"ac_cv_little_endian_double=yes"
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"ac_cv_big_endian_double=no"
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"ac_cv_mixed_endian_double=no"
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"ac_cv_x87_double_rounding=yes"
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"ac_cv_tanh_preserves_zero_sign=yes"
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# Generally assume that things are present and work
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"ac_cv_posix_semaphores_enabled=yes"
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"ac_cv_broken_sem_getvalue=no"
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"ac_cv_wchar_t_signed=yes"
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"ac_cv_rshift_extends_sign=yes"
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"ac_cv_broken_nice=no"
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"ac_cv_broken_poll=no"
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"ac_cv_working_tzset=yes"
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"ac_cv_have_long_long_format=yes"
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"ac_cv_have_size_t_format=yes"
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"ac_cv_computed_gotos=yes"
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# Both fail when building for windows, normally configure checks this by itself but on other platforms this is set to yes always.
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"ac_cv_file__dev_ptmx=${if stdenv.hostPlatform.isWindows then "no" else "yes"}"
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"ac_cv_file__dev_ptc=${if stdenv.hostPlatform.isWindows then "no" else "yes"}"
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] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform && pythonAtLeast "3.11") [
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"--with-build-python=${pythonOnBuildForHostInterpreter}"
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] ++ optionals stdenv.hostPlatform.isLinux [
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# Never even try to use lchmod on linux,
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# don't rely on detecting glibc-isms.
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"ac_cv_func_lchmod=no"
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] ++ optionals static [
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"LDFLAGS=-static"
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"MODULE_BUILDTYPE=static"
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] ++ optionals (stdenv.hostPlatform.isStatic && stdenv.hostPlatform.isMusl) [
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# dlopen is a no-op in static musl builds, and since we build everything without -fPIC it's better not to pretend.
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"ac_cv_func_dlopen=no"
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];
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preConfigure = ''
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# Attempt to purify some of the host info collection
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sed -E -i -e 's/uname -r/echo/g' -e 's/uname -n/echo nixpkgs/g' config.guess
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sed -E -i -e 's/uname -r/echo/g' -e 's/uname -n/echo nixpkgs/g' configure
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'' + optionalString (pythonOlder "3.12") ''
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# Improve purity
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for path in /usr /sw /opt /pkg; do
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substituteInPlace ./setup.py --replace-warn $path /no-such-path
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done
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'' + optionalString stdenv.hostPlatform.isDarwin ''
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# Override the auto-detection in setup.py, which assumes a universal build
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export PYTHON_DECIMAL_WITH_MACHINE=${if stdenv.hostPlatform.isAarch64 then "uint128" else "x64"}
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# Ensure that modern platform features are enabled on Darwin in spite of having no version suffix.
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sed -E -i -e 's|Darwin/\[12\]\[0-9\]\.\*|Darwin/*|' configure
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'' + optionalString (pythonAtLeast "3.11") ''
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# Also override the auto-detection in `configure`.
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substituteInPlace configure \
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--replace-fail 'libmpdec_machine=universal' 'libmpdec_machine=${if stdenv.hostPlatform.isAarch64 then "uint128" else "x64"}'
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'' + optionalString (stdenv.hostPlatform.isDarwin && x11Support && pythonAtLeast "3.11") ''
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export TCLTK_LIBS="-L${tcl}/lib -L${tk}/lib -l${tcl.libPrefix} -l${tk.libPrefix}"
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export TCLTK_CFLAGS="-I${tcl}/include -I${tk}/include"
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'' + optionalString stdenv.hostPlatform.isMusl ''
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export NIX_CFLAGS_COMPILE+=" -DTHREAD_STACK_SIZE=0x100000"
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'' +
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# enableNoSemanticInterposition essentially sets that CFLAG -fno-semantic-interposition
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||
# which changes how symbols are looked up. This essentially means we can't override
|
||
# libpython symbols via LD_PRELOAD anymore. This is common enough as every build
|
||
# that uses --enable-optimizations has the same "issue".
|
||
#
|
||
# The Fedora wiki has a good article about their journey towards enabling this flag:
|
||
# https://fedoraproject.org/wiki/Changes/PythonNoSemanticInterpositionSpeedup
|
||
optionalString enableNoSemanticInterposition ''
|
||
export CFLAGS_NODIST="-fno-semantic-interposition"
|
||
'';
|
||
|
||
setupHook = python-setup-hook sitePackages;
|
||
|
||
postInstall = let
|
||
# References *not* to nuke from (sys)config files
|
||
keep-references = concatMapStringsSep " " (val: "-e ${val}") ([
|
||
(placeholder "out")
|
||
] ++ lib.optional (libxcrypt != null) libxcrypt
|
||
++ lib.optional tzdataSupport tzdata
|
||
);
|
||
in lib.optionalString enableFramework ''
|
||
for dir in include lib share; do
|
||
ln -s $out/Library/Frameworks/Python.framework/Versions/Current/$dir $out/$dir
|
||
done
|
||
'' + ''
|
||
# needed for some packages, especially packages that backport functionality
|
||
# to 2.x from 3.x
|
||
for item in $out/lib/${libPrefix}/test/*; do
|
||
if [[ "$item" != */test_support.py*
|
||
&& "$item" != */test/support
|
||
&& "$item" != */test/libregrtest
|
||
&& "$item" != */test/regrtest.py* ]]; then
|
||
rm -rf "$item"
|
||
else
|
||
echo $item
|
||
fi
|
||
done
|
||
touch $out/lib/${libPrefix}/test/__init__.py
|
||
|
||
# Determinism: Windows installers were not deterministic.
|
||
# We're also not interested in building Windows installers.
|
||
find "$out" -name 'wininst*.exe' | xargs -r rm -f
|
||
|
||
# Use Python3 as default python
|
||
ln -s "$out/bin/idle3" "$out/bin/idle"
|
||
ln -s "$out/bin/pydoc3" "$out/bin/pydoc"
|
||
ln -s "$out/bin/python3${execSuffix}" "$out/bin/python${execSuffix}"
|
||
ln -s "$out/bin/python3-config" "$out/bin/python-config"
|
||
ln -s "$out/lib/pkgconfig/python3.pc" "$out/lib/pkgconfig/python.pc"
|
||
ln -sL "$out/share/man/man1/python3.1.gz" "$out/share/man/man1/python.1.gz"
|
||
|
||
# Get rid of retained dependencies on -dev packages, and remove
|
||
# some $TMPDIR references to improve binary reproducibility.
|
||
# Note that the .pyc file of _sysconfigdata.py should be regenerated!
|
||
for i in $out/lib/${libPrefix}/_sysconfigdata*.py $out/lib/${libPrefix}/config-${sourceVersion.major}${sourceVersion.minor}*/Makefile; do
|
||
sed -i $i -e "s|$TMPDIR|/no-such-path|g"
|
||
done
|
||
|
||
# Further get rid of references. https://github.com/NixOS/nixpkgs/issues/51668
|
||
find $out/lib/python*/config-* -type f -print -exec nuke-refs ${keep-references} '{}' +
|
||
find $out/lib -name '_sysconfigdata*.py*' -print -exec nuke-refs ${keep-references} '{}' +
|
||
|
||
# Make the sysconfigdata module accessible on PYTHONPATH
|
||
# This allows build Python to import host Python's sysconfigdata
|
||
mkdir -p "$out/${sitePackages}"
|
||
ln -s "$out/lib/${libPrefix}/"_sysconfigdata*.py "$out/${sitePackages}/"
|
||
'' + optionalString stripConfig ''
|
||
rm -R $out/bin/python*-config $out/lib/python*/config-*
|
||
'' + optionalString stripIdlelib ''
|
||
# Strip IDLE (and turtledemo, which uses it)
|
||
rm -R $out/bin/idle* $out/lib/python*/{idlelib,turtledemo}
|
||
'' + optionalString stripTkinter ''
|
||
rm -R $out/lib/python*/tkinter
|
||
'' + optionalString stripTests ''
|
||
# Strip tests
|
||
rm -R $out/lib/python*/test $out/lib/python*/**/test{,s}
|
||
'' + optionalString includeSiteCustomize ''
|
||
# Include a sitecustomize.py file
|
||
cp ${../sitecustomize.py} $out/${sitePackages}/sitecustomize.py
|
||
'' + optionalString stripBytecode ''
|
||
# Determinism: deterministic bytecode
|
||
# First we delete all old bytecode.
|
||
find $out -type d -name __pycache__ -print0 | xargs -0 -I {} rm -rf "{}"
|
||
'' + optionalString rebuildBytecode ''
|
||
# Python 3.7 implements PEP 552, introducing support for deterministic bytecode.
|
||
# compileall uses the therein introduced checked-hash method by default when
|
||
# `SOURCE_DATE_EPOCH` is set.
|
||
# We exclude lib2to3 because that's Python 2 code which fails
|
||
# We build 3 levels of optimized bytecode. Note the default level, without optimizations,
|
||
# is not reproducible yet. https://bugs.python.org/issue29708
|
||
# Not creating bytecode will result in a large performance loss however, so we do build it.
|
||
find $out -name "*.py" | ${pythonOnBuildForHostInterpreter} -m compileall -q -f -x "lib2to3" -i -
|
||
find $out -name "*.py" | ${pythonOnBuildForHostInterpreter} -O -m compileall -q -f -x "lib2to3" -i -
|
||
find $out -name "*.py" | ${pythonOnBuildForHostInterpreter} -OO -m compileall -q -f -x "lib2to3" -i -
|
||
'' + ''
|
||
# *strip* shebang from libpython gdb script - it should be dual-syntax and
|
||
# interpretable by whatever python the gdb in question is using, which may
|
||
# not even match the major version of this python. doing this after the
|
||
# bytecode compilations for the same reason - we don't want bytecode generated.
|
||
mkdir -p $out/share/gdb
|
||
sed '/^#!/d' Tools/gdb/libpython.py > $out/share/gdb/libpython.py
|
||
|
||
# Disable system-wide pip installation. See https://peps.python.org/pep-0668/.
|
||
cat <<'EXTERNALLY_MANAGED' > $out/lib/${libPrefix}/EXTERNALLY-MANAGED
|
||
[externally-managed]
|
||
Error=This command has been disabled as it tries to modify the immutable
|
||
`/nix/store` filesystem.
|
||
|
||
To use Python with Nix and nixpkgs, have a look at the online documentation:
|
||
<https://nixos.org/manual/nixpkgs/stable/#python>.
|
||
EXTERNALLY_MANAGED
|
||
'' + optionalString stdenv.hostPlatform.isWindows ''
|
||
# Shebang files that link against the build python. Shebang don’t work on windows
|
||
rm $out/bin/2to3*
|
||
rm $out/bin/idle*
|
||
rm $out/bin/pydoc*
|
||
|
||
echo linking DLLs for python’s compiled librairies
|
||
linkDLLsInfolder $out/lib/python*/lib-dynload/
|
||
'';
|
||
|
||
preFixup = lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
|
||
# Ensure patch-shebangs uses shebangs of host interpreter.
|
||
export PATH=${lib.makeBinPath [ "$out" ]}:$PATH
|
||
'';
|
||
|
||
# Add CPython specific setup-hook that configures distutils.sysconfig to
|
||
# always load sysconfigdata from host Python.
|
||
postFixup = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
|
||
# https://github.com/python/cpython/blob/e488e300f5c01289c10906c2e53a8e43d6de32d8/configure.ac#L78
|
||
sysconfigdataName="$(make --eval $'print-sysconfigdata-name:
|
||
\t@echo _sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH) ' print-sysconfigdata-name)"
|
||
|
||
# The CPython interpreter contains a _sysconfigdata_<platform specific suffix>
|
||
# module that is imported by the sysconfig and distutils.sysconfig modules.
|
||
# The sysconfigdata module is generated at build time and contains settings
|
||
# required for building Python extension modules, such as include paths and
|
||
# other compiler flags. By default, the sysconfigdata module is loaded from
|
||
# the currently running interpreter (ie. the build platform interpreter), but
|
||
# when cross-compiling we want to load it from the host platform interpreter.
|
||
# This can be done using the _PYTHON_SYSCONFIGDATA_NAME environment variable.
|
||
# The _PYTHON_HOST_PLATFORM variable also needs to be set to get the correct
|
||
# platform suffix on extension modules. The correct values for these variables
|
||
# are not documented, and must be derived from the configure script (see links
|
||
# below).
|
||
cat <<EOF >> "$out/nix-support/setup-hook"
|
||
sysconfigdataHook() {
|
||
if [ "\$1" = '$out' ]; then
|
||
export _PYTHON_HOST_PLATFORM='${pythonHostPlatform}'
|
||
export _PYTHON_SYSCONFIGDATA_NAME='$sysconfigdataName'
|
||
fi
|
||
}
|
||
|
||
addEnvHooks "\$hostOffset" sysconfigdataHook
|
||
EOF
|
||
'';
|
||
|
||
# Enforce that we don't have references to the OpenSSL -dev package, which we
|
||
# explicitly specify in our configure flags above.
|
||
disallowedReferences = lib.optionals (openssl != null && !static && !enableFramework) [
|
||
openssl.dev
|
||
] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
|
||
# Ensure we don't have references to build-time packages.
|
||
# These typically end up in shebangs.
|
||
pythonOnBuildForHost buildPackages.bash
|
||
];
|
||
|
||
separateDebugInfo = true;
|
||
|
||
passthru = passthru // {
|
||
doc = stdenv.mkDerivation {
|
||
inherit src;
|
||
name = "python${pythonVersion}-${version}-doc";
|
||
|
||
patches = optionals (pythonAtLeast "3.9" && pythonOlder "3.10") [
|
||
# https://github.com/python/cpython/issues/98366
|
||
(fetchpatch {
|
||
url = "https://github.com/python/cpython/commit/5612471501b05518287ed61c1abcb9ed38c03942.patch";
|
||
hash = "sha256-p41hJwAiyRgyVjCVQokMSpSFg/VDDrqkCSxsodVb6vY=";
|
||
})
|
||
];
|
||
|
||
dontConfigure = true;
|
||
|
||
dontBuild = true;
|
||
|
||
sphinxRoot = "Doc";
|
||
|
||
postInstallSphinx = ''
|
||
mv $out/share/doc/* $out/share/doc/python${pythonVersion}-${version}
|
||
'';
|
||
|
||
nativeBuildInputs = with pkgsBuildBuild.python3.pkgs; [ sphinxHook python-docs-theme ];
|
||
};
|
||
|
||
tests = passthru.tests // {
|
||
pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
|
||
};
|
||
};
|
||
|
||
enableParallelBuilding = true;
|
||
|
||
meta = with lib; {
|
||
homepage = "https://www.python.org";
|
||
changelog = let
|
||
majorMinor = versions.majorMinor version;
|
||
dashedVersion = replaceStrings [ "." "a" "b" ] [ "-" "-alpha-" "-beta-" ] version;
|
||
in
|
||
if sourceVersion.suffix == "" then
|
||
"https://docs.python.org/release/${version}/whatsnew/changelog.html"
|
||
else
|
||
"https://docs.python.org/${majorMinor}/whatsnew/changelog.html#python-${dashedVersion}";
|
||
description = "High-level dynamically-typed programming language";
|
||
longDescription = ''
|
||
Python is a remarkably powerful dynamic programming language that
|
||
is used in a wide variety of application domains. Some of its key
|
||
distinguishing features include: clear, readable syntax; strong
|
||
introspection capabilities; intuitive object orientation; natural
|
||
expression of procedural code; full modularity, supporting
|
||
hierarchical packages; exception-based error handling; and very
|
||
high level dynamic data types.
|
||
'';
|
||
license = licenses.psfl;
|
||
pkgConfigModules = [ "python3" ];
|
||
platforms = platforms.linux ++ platforms.darwin ++ platforms.windows ++ platforms.freebsd;
|
||
mainProgram = executable;
|
||
maintainers = lib.teams.python.members;
|
||
};
|
||
})
|