forked from mirrors/nixpkgs
efbe87f3ef
Each time a new major/minor version of CPython was released, a new expression would be written, typically copied from the previous release. Often fixes are only made in the current/latest release. By merging the expressions it's more likely that modifications end up in all versions, as is likely intended. This commit introduces one expression for Python 3, and another for 2.7. These two may also be merged, but it will result in a lot of extra conditionals making the expression harder to follow. A common passthru is introduced for CPython and PyPy. python 2.7: use common passthru
287 lines
11 KiB
Nix
287 lines
11 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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, db
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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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, 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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, packageOverrides ? (self: super: {})
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, buildPackages
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, sourceVersion
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, sha256
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, passthruFun
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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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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 pythonForBuild;
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} // {
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inherit ucsEncoding;
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};
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version = with sourceVersion; "${major}.${minor}.${patch}${suffix}";
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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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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 = "file://${./type_getattro.patch}";
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sha256 = "11v9yx20hs3jmw0wggzvmw39qs4mxay4kb8iq2qjydwy9ya61nrd";
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})
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(fetchpatch {
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name = "CVE-2018-1000802.patch";
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url = "https://github.com/python/cpython/pull/8985.patch";
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sha256 = "1c8nq2c9sjqa8ipl62hiandg6a7lzrwwfhi3ky6jd3pxgyalrh97";
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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 stdenv.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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] ++ optional (stdenv.hostPlatform != stdenv.buildPlatform) [
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./cross-compile.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${toString ucsEncoding}"
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] ++ optionals (stdenv.hostPlatform.isCygwin || stdenv.hostPlatform.isAarch64) [
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"--with-system-ffi"
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] ++ optionals stdenv.hostPlatform.isCygwin [
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"--with-system-expat"
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"ac_cv_func_bind_textdomain_codeset=yes"
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] ++ optionals stdenv.isDarwin [
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"--disable-toolbox-glue"
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] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
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"PYTHON_FOR_BUILD=${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 stdenv.hostPlatform.isLinux "ac_cv_func_lchmod=no";
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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 (stdenv.hostPlatform.isCygwin || stdenv.hostPlatform.isAarch64) libffi
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++ optional stdenv.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 (stdenv.hostPlatform != stdenv.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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# Python 2.7 needs this
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crossCompileEnv = stdenv.lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform)
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{ _PYTHON_HOST_PLATFORM = stdenv.hostPlatform.config; };
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# Build the basic Python interpreter without modules that have
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# external dependencies.
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in with passthru; stdenv.mkDerivation ({
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pname = "python";
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inherit version;
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inherit src patches buildInputs nativeBuildInputs 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 stdenv.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 $out/lib/${libPrefix}/test/*; do
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if [[ "$item" != */test_support.py*
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&& "$item" != */test/support
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&& "$item" != */test/regrtest.py* ]]; then
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rm -rf "$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 $out/lib/${libPrefix}/pdb.py $out/bin/pdb
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ln -s $out/lib/${libPrefix}/pdb.py $out/bin/pdb${sourceVersion.major}.${sourceVersion.minor}
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ln -s $out/share/man/man1/{python2.7.1.gz,python.1.gz}
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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 stdenv.hostPlatform.isCygwin ''
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cp libpython2.7.dll.a $out/lib
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'';
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inherit passthru;
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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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} // crossCompileEnv)
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