284 lines
11 KiB
Nix
284 lines
11 KiB
Nix
{ stdenv, hostPlatform, buildPlatform, buildPackages, fetchurl
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, bzip2
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, gdbm
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, fetchpatch
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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, xlibsWrapper ? null, libX11 ? null, x11Support ? false
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, zlib
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, callPackage
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, self
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, gettext
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, db
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, expat
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, libffi
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, CF, configd, coreutils
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, python-setup-hook
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# Some proprietary libs assume UCS2 unicode, especially on darwin :(
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, ucsEncoding ? 4
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# For the Python package set
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, pkgs, packageOverrides ? (self: super: {})
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}:
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assert x11Support -> tcl != null
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&& tk != null
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&& xlibsWrapper != null
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&& libX11 != null;
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with stdenv.lib;
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let
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majorVersion = "2.7";
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minorVersion = "15";
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minorVersionSuffix = "";
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pythonVersion = majorVersion;
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version = "${majorVersion}.${minorVersion}${minorVersionSuffix}";
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libPrefix = "python${majorVersion}";
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sitePackages = "lib/${libPrefix}/site-packages";
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src = fetchurl {
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url = "https://www.python.org/ftp/python/${majorVersion}.${minorVersion}/Python-${version}.tar.xz";
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sha256 = "0x2mvz9dp11wj7p5ccvmk9s0hzjk2fa1m462p395l4r6bfnb3n92";
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};
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hasDistutilsCxxPatch = !(stdenv.cc.isGNU or false);
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patches =
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[ # Look in C_INCLUDE_PATH and LIBRARY_PATH for stuff.
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./search-path.patch
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# Python recompiles a Python if the mtime stored *in* the
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# pyc/pyo file differs from the mtime of the source file. This
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# doesn't work in Nix because Nix changes the mtime of files in
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# the Nix store to 1. So treat that as a special case.
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./nix-store-mtime.patch
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# patch python to put zero timestamp into pyc
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# if DETERMINISTIC_BUILD env var is set
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./deterministic-build.patch
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# Fix python bug #27177 (https://bugs.python.org/issue27177)
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# The issue is that `match.group` only recognizes python integers
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# instead of everything that has `__index__`.
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# This bug was fixed upstream, but not backported to 2.7
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(fetchpatch {
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name = "re_match_index.patch";
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url = "https://bugs.python.org/file43084/re_match_index.patch";
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sha256 = "0l9rw6r5r90iybdkp3hhl2pf0h0s1izc68h5d3ywrm92pq32wz57";
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})
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# "`type_getattro()` calls `tp_descr_get(self, obj, type)` without actually owning a reference to "self".
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# In very rare cases, this can cause a segmentation fault if "self" is deleted by the descriptor."
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# https://github.com/python/cpython/pull/6118
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(fetchpatch {
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name = "type_getattro.patch";
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url = "https://github.com/python/cpython/pull/6118/commits/8c6da2d7e7e719c40fb539b7f7cb7583cccc5527.patch";
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sha256 = "11v9yx20hs3jmw0wggzvmw39qs4mxay4kb8iq2qjydwy9ya61nrd";
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})
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] ++ optionals (x11Support && stdenv.isDarwin) [
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./use-correct-tcl-tk-on-darwin.patch
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] ++ optionals stdenv.isLinux [
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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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./no-ldconfig.patch
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] ++ optionals hostPlatform.isCygwin [
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./2.5.2-ctypes-util-find_library.patch
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./2.5.2-tkinter-x11.patch
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./2.6.2-ssl-threads.patch
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./2.6.5-export-PySignal_SetWakeupFd.patch
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./2.6.5-FD_SETSIZE.patch
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./2.6.5-ncurses-abi6.patch
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./2.7.3-dbm.patch
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./2.7.3-dylib.patch
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./2.7.3-getpath-exe-extension.patch
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./2.7.3-no-libm.patch
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] ++ optionals hasDistutilsCxxPatch [
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# Patch from http://bugs.python.org/issue1222585 adapted to work with
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# `patch -p1' and with a last hunk removed
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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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./python-2.7-distutils-C++.patch
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];
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preConfigure = ''
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# Purity.
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for i in /usr /sw /opt /pkg; do
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substituteInPlace ./setup.py --replace $i /no-such-path
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done
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'' + optionalString (stdenv ? cc && stdenv.cc.libc != null) ''
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for i in Lib/plat-*/regen; do
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substituteInPlace $i --replace /usr/include/ ${stdenv.cc.libc}/include/
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done
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'' + optionalString stdenv.isDarwin ''
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substituteInPlace configure --replace '`/usr/bin/arch`' '"i386"'
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substituteInPlace Lib/multiprocessing/__init__.py \
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--replace 'os.popen(comm)' 'os.popen("${coreutils}/bin/nproc")'
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'';
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configureFlags = [
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"--enable-shared"
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"--with-threads"
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"--enable-unicode=ucs${toString ucsEncoding}"
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] ++ optionals (hostPlatform.isCygwin || hostPlatform.isAarch64) [
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"--with-system-ffi"
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] ++ optionals hostPlatform.isCygwin [
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"--with-system-expat"
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"ac_cv_func_bind_textdomain_codeset=yes"
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] ++ optionals stdenv.isDarwin [
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"--disable-toolbox-glue"
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] ++ optionals (hostPlatform != buildPlatform) [
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"PYTHON_FOR_BUILD=${getBin buildPackages.python}/bin/python"
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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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]
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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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++ optional hostPlatform.isLinux "ac_cv_func_lchmod=no";
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postConfigure = if hostPlatform.isCygwin then ''
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sed -i Makefile -e 's,PYTHONPATH="$(srcdir),PYTHONPATH="$(abs_srcdir),'
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'' else null;
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buildInputs =
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optional (stdenv ? cc && stdenv.cc.libc != null) stdenv.cc.libc ++
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[ bzip2 openssl zlib ]
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++ optional (hostPlatform.isCygwin || hostPlatform.isAarch64) libffi
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++ optional hostPlatform.isCygwin expat
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++ [ db gdbm ncurses sqlite readline ]
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++ optionals x11Support [ tcl tk xlibsWrapper libX11 ]
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++ optionals stdenv.isDarwin ([ CF ] ++ optional (configd != null) configd);
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nativeBuildInputs =
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optionals (hostPlatform != buildPlatform)
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[ buildPackages.stdenv.cc buildPackages.python ];
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mkPaths = paths: {
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C_INCLUDE_PATH = makeSearchPathOutput "dev" "include" paths;
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LIBRARY_PATH = makeLibraryPath paths;
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};
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# Build the basic Python interpreter without modules that have
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# external dependencies.
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in stdenv.mkDerivation {
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name = "python-${version}";
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pythonVersion = majorVersion;
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inherit majorVersion version src patches buildInputs nativeBuildInputs
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preConfigure configureFlags;
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LDFLAGS = stdenv.lib.optionalString (!stdenv.isDarwin) "-lgcc_s";
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inherit (mkPaths buildInputs) C_INCLUDE_PATH LIBRARY_PATH;
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NIX_CFLAGS_COMPILE = optionalString stdenv.isDarwin "-msse2"
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+ optionalString hostPlatform.isMusl " -DTHREAD_STACK_SIZE=0x100000";
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DETERMINISTIC_BUILD = 1;
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setupHook = python-setup-hook sitePackages;
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postPatch = optionalString (x11Support && (tix != null)) ''
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substituteInPlace "Lib/lib-tk/Tix.py" --replace "os.environ.get('TIX_LIBRARY')" "os.environ.get('TIX_LIBRARY') or '${tix}/lib'"
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'';
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postInstall =
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''
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# needed for some packages, especially packages that backport
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# functionality to 2.x from 3.x
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for item in $out/lib/python${majorVersion}/test/*; do
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if [[ "$item" != */test_support.py*
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&& "$item" != */test/support
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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 $out/lib/python${majorVersion}/test/__init__.py
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ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb
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ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb${majorVersion}
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ln -s $out/share/man/man1/{python2.7.1.gz,python.1.gz}
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paxmark E $out/bin/python${majorVersion}
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# Python on Nix is not manylinux1 compatible. https://github.com/NixOS/nixpkgs/issues/18484
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echo "manylinux1_compatible=False" >> $out/lib/${libPrefix}/_manylinux.py
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rm "$out"/lib/python*/plat-*/regen # refers to glibc.dev
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# Determinism: Windows installers were not deterministic.
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# We're also not interested in building Windows installers.
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find "$out" -name 'wininst*.exe' | xargs -r rm -f
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'' + optionalString (stdenv.hostPlatform == stdenv.buildPlatform)
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''
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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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find $out -name "*.py" | $out/bin/python -m compileall -q -f -x "lib2to3" -i -
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find $out -name "*.py" | $out/bin/python -O -m compileall -q -f -x "lib2to3" -i -
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find $out -name "*.py" | $out/bin/python -OO -m compileall -q -f -x "lib2to3" -i -
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'' + optionalString hostPlatform.isCygwin ''
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cp libpython2.7.dll.a $out/lib
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'';
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passthru = let
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pythonPackages = callPackage ../../../../../top-level/python-packages.nix {python=self; overrides=packageOverrides;};
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in rec {
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inherit libPrefix sitePackages x11Support hasDistutilsCxxPatch ucsEncoding;
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executable = libPrefix;
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buildEnv = callPackage ../../wrapper.nix { python = self; inherit (pythonPackages) requiredPythonModules; };
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withPackages = import ../../with-packages.nix { inherit buildEnv pythonPackages;};
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pkgs = pythonPackages;
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isPy2 = true;
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isPy27 = true;
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interpreter = "${self}/bin/${executable}";
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};
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enableParallelBuilding = true;
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doCheck = false; # expensive, and fails
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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 = stdenv.lib.licenses.psfl;
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platforms = stdenv.lib.platforms.all;
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maintainers = with stdenv.lib.maintainers; [ fridh ];
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# Higher priority than Python 3.x so that `/bin/python` points to `/bin/python2`
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# in case both 2 and 3 are installed.
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priority = -100;
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};
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}
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