319 lines
12 KiB
Nix
319 lines
12 KiB
Nix
{ stdenv, fetchurl, fetchpatch
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, bzip2
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, expat
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, libffi
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, gdbm
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, lzma
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, ncurses
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, openssl
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, readline
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, sqlite
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, tcl ? null, tk ? null, tix ? null, libX11 ? null, xorgproto ? null, x11Support ? false
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, zlib
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, self
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, configd
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, autoreconfHook
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, python-setup-hook
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, nukeReferences
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# For the Python package set
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, packageOverrides ? (self: super: {})
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, buildPackages
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, pythonForBuild ? buildPackages.${"python${sourceVersion.major}${sourceVersion.minor}"}
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, sourceVersion
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, sha256
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, passthruFun
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, bash
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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 ? false
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, includeSiteCustomize ? true
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, static ? false
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# Not using optimizations on Darwin
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# configure: error: llvm-profdata is required for a --enable-optimizations build but could not be found.
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, enableOptimizations ? (!stdenv.isDarwin)
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}:
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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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with stdenv.lib;
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let
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passthru = passthruFun rec {
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inherit self sourceVersion packageOverrides;
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implementation = "cpython";
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libPrefix = "python${pythonVersion}";
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executable = libPrefix;
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pythonVersion = with sourceVersion; "${major}.${minor}";
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sitePackages = "lib/${libPrefix}/site-packages";
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inherit hasDistutilsCxxPatch pythonForBuild;
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};
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version = with sourceVersion; "${major}.${minor}.${patch}${suffix}";
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nativeBuildInputs = optionals (!stdenv.isDarwin) [
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autoreconfHook
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] ++ [
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nukeReferences
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] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
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buildPackages.stdenv.cc
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pythonForBuild
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];
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buildInputs = filter (p: p != null) ([
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zlib bzip2 expat lzma libffi gdbm sqlite readline ncurses openssl ]
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++ optionals x11Support [ tcl tk libX11 xorgproto ]
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++ optionals stdenv.isDarwin [ configd ]);
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hasDistutilsCxxPatch = !(stdenv.cc.isGNU or false);
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inherit pythonForBuild;
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pythonForBuildInterpreter = if stdenv.hostPlatform == stdenv.buildPlatform then
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"$out/bin/python"
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else pythonForBuild.interpreter;
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in with passthru; stdenv.mkDerivation {
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pname = "python3";
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inherit version;
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inherit buildInputs nativeBuildInputs;
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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 sha256;
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};
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prePatch = optionalString stdenv.isDarwin ''
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substituteInPlace configure --replace '`/usr/bin/arch`' '"i386"'
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substituteInPlace configure --replace '-Wl,-stack_size,1000000' ' '
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'' + optionalString (stdenv.isDarwin && x11Support) ''
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substituteInPlace setup.py --replace /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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(./. + "/${sourceVersion.major}.${sourceVersion.minor}/no-ldconfig.patch")
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] ++ optionals (isPy35 || isPy36) [
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# Determinism: Write null timestamps when compiling python files.
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./3.5/force_bytecode_determinism.patch
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] ++ optionals isPy35 [
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# Backports support for LD_LIBRARY_PATH from 3.6
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./3.5/ld_library_path.patch
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] ++ optionals (isPy35 || isPy36 || isPy37) [
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# Backport a fix for discovering `rpmbuild` command when doing `python setup.py bdist_rpm` to 3.5, 3.6, 3.7.
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# See: https://bugs.python.org/issue11122
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./3.7/fix-hardcoded-path-checking-for-rpmbuild.patch
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] ++ optionals (isPy37 || isPy38 || isPy39) [
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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 (pythonOlder "3.8") [
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# Backport from CPython 3.8 of a good list of tests to run for PGO.
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(
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if isPy36 || isPy37 then
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./3.6/profile-task.patch
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else
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./3.5/profile-task.patch
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)
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] ++ optionals (isPy3k && hasDistutilsCxxPatch) [
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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 isPy35 then
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./3.5/python-3.x-distutils-C++.patch
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else if isPy37 || isPy38 || isPy39 then
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./3.7/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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] ++ [
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# LDSHARED now uses $CC instead of gcc. Fixes cross-compilation of extension modules.
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./3.8/0001-On-all-posix-systems-not-just-Darwin-set-LDSHARED-if.patch
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];
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postPatch = ''
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'' + optionalString (x11Support && (tix != null)) ''
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substituteInPlace "Lib/tkinter/tix.py" --replace "os.environ.get('TIX_LIBRARY')" "os.environ.get('TIX_LIBRARY') or '${tix}/lib'"
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'';
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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.isDarwin) "-lcrypt"} ${optionalString (ncurses != null) "-lncurses"}";
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NIX_LDFLAGS = optionalString (stdenv.isLinux && !stdenv.hostPlatform.isMusl) "-lgcc_s" + optionalString stdenv.hostPlatform.isMusl "-lgcc_eh";
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# Determinism: We fix the hashes of str, bytes and datetime objects.
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PYTHONHASHSEED=0;
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configureFlags = [
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"--enable-shared"
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"--without-ensurepip"
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"--with-system-expat"
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"--with-system-ffi"
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] ++ optionals enableOptimizations [
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"--enable-optimizations"
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] ++ optionals (pythonOlder "3.7") [
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# This is unconditionally true starting in CPython 3.7.
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"--with-threads"
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] ++ optionals (sqlite != null && isPy3k) [
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"--enable-loadable-sqlite-extensions"
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] ++ optionals (openssl != null) [
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"--with-openssl=${openssl.dev}"
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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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"ac_cv_file__dev_ptmx=yes"
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"ac_cv_file__dev_ptc=yes"
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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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] ++ optional static "LDFLAGS=-static";
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preConfigure = ''
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for i in /usr /sw /opt /pkg; do # improve purity
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substituteInPlace ./setup.py --replace $i /no-such-path
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done
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'' + optionalString stdenv.isDarwin ''
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export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -msse2"
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export MACOSX_DEPLOYMENT_TARGET=10.6
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'' + optionalString (isPy3k && pythonOlder "3.7") ''
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# Determinism: The interpreter is patched to write null timestamps when compiling Python files
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# so Python doesn't try to update the bytecode when seeing frozen timestamps in Nix's store.
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export DETERMINISTIC_BUILD=1;
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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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setupHook = python-setup-hook sitePackages;
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postInstall = ''
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# needed for some packages, especially packages that backport functionality
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# to 2.x from 3.x
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for item in $out/lib/${libPrefix}/test/*; do
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if [[ "$item" != */test_support.py*
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&& "$item" != */test/support
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&& "$item" != */test/libregrtest
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&& "$item" != */test/regrtest.py* ]]; then
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rm -rf "$item"
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else
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echo $item
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fi
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done
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touch $out/lib/${libPrefix}/test/__init__.py
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ln -s "$out/include/${executable}m" "$out/include/${executable}"
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# Determinism: Windows installers were not deterministic.
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# We're also not interested in building Windows installers.
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find "$out" -name 'wininst*.exe' | xargs -r rm -f
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# Use Python3 as default python
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ln -s "$out/bin/idle3" "$out/bin/idle"
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ln -s "$out/bin/pydoc3" "$out/bin/pydoc"
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ln -s "$out/bin/python3" "$out/bin/python"
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ln -s "$out/bin/python3-config" "$out/bin/python-config"
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ln -s "$out/lib/pkgconfig/python3.pc" "$out/lib/pkgconfig/python.pc"
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# Get rid of retained dependencies on -dev packages, and remove
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# some $TMPDIR references to improve binary reproducibility.
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# Note that the .pyc file of _sysconfigdata.py should be regenerated!
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for i in $out/lib/${libPrefix}/_sysconfigdata*.py $out/lib/${libPrefix}/config-${sourceVersion.major}${sourceVersion.minor}*/Makefile; do
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sed -i $i -e "s|$TMPDIR|/no-such-path|g"
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done
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# Further get rid of references. https://github.com/NixOS/nixpkgs/issues/51668
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find $out/lib/python*/config-* -type f -print -exec nuke-refs -e $out '{}' +
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find $out/lib -name '_sysconfigdata*.py*' -print -exec nuke-refs -e $out '{}' +
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'' + optionalString stripConfig ''
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rm -R $out/bin/python*-config $out/lib/python*/config-*
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'' + optionalString stripIdlelib ''
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# Strip IDLE (and turtledemo, which uses it)
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rm -R $out/bin/idle* $out/lib/python*/{idlelib,turtledemo}
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'' + optionalString stripTkinter ''
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rm -R $out/lib/python*/tkinter
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'' + optionalString stripTests ''
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# Strip tests
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rm -R $out/lib/python*/test $out/lib/python*/**/test{,s}
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'' + optionalString includeSiteCustomize ''
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# Include a sitecustomize.py file
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cp ${../sitecustomize.py} $out/${sitePackages}/sitecustomize.py
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'' + optionalString rebuildBytecode ''
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# Determinism: rebuild all bytecode
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# We exclude lib2to3 because that's Python 2 code which fails
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# We rebuild three times, once for each optimization level
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# Python 3.7 implements PEP 552, introducing support for deterministic bytecode.
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# This is automatically used when `SOURCE_DATE_EPOCH` is set.
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find $out -name "*.py" | ${pythonForBuildInterpreter} -m compileall -q -f -x "lib2to3" -i -
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find $out -name "*.py" | ${pythonForBuildInterpreter} -O -m compileall -q -f -x "lib2to3" -i -
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find $out -name "*.py" | ${pythonForBuildInterpreter} -OO -m compileall -q -f -x "lib2to3" -i -
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'' + optionalString stripBytecode ''
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find $out -type d -name __pycache__ -print0 | xargs -0 -I {} rm -rf "{}"
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'';
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preFixup = stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
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# Ensure patch-shebangs uses shebangs of host interpreter.
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export PATH=${stdenv.lib.makeBinPath [ "$out" bash ]}:$PATH
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'';
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# Enforce that we don't have references to the OpenSSL -dev package, which we
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# explicitly specify in our configure flags above.
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disallowedReferences =
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stdenv.lib.optionals (openssl != null && !static) [ openssl.dev ]
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++ stdenv.lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
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# Ensure we don't have references to build-time packages.
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# These typically end up in shebangs.
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pythonForBuild buildPackages.bash
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];
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inherit passthru;
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enableParallelBuilding = true;
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meta = {
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homepage = "http://python.org";
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description = "A high-level dynamically-typed programming language";
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longDescription = ''
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Python is a remarkably powerful dynamic programming language that
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is used in a wide variety of application domains. Some of its key
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distinguishing features include: clear, readable syntax; strong
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introspection capabilities; intuitive object orientation; natural
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expression of procedural code; full modularity, supporting
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hierarchical packages; exception-based error handling; and very
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high level dynamic data types.
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'';
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license = licenses.psfl;
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platforms = with platforms; linux ++ darwin;
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maintainers = with maintainers; [ fridh ];
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};
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}
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