nixpkgs/pkgs/development/interpreters/python/cpython/2.7/default.nix
Tuomas Tynkkynen a0a8f0ac87 python2: Use system libffi on Aarch64
libffi needs a patch to actually work on aarch64 (or the cffi Python package
fails its testsuite). Of course the bundled version of libffi has the
same bug, so don't use the buggy version on aarch64.

Python3 already uses the system libffi on all platforms. I don't know
why Python2 doesn't.
2017-09-16 01:16:08 +03:00

235 lines
8.3 KiB
Nix

{ stdenv, hostPlatform, fetchurl
, bzip2
, gdbm
, fetchpatch
, ncurses
, openssl
, readline
, sqlite
, tcl ? null, tk ? null, tix ? null, xlibsWrapper ? null, libX11 ? null, x11Support ? false
, zlib
, callPackage
, self
, gettext
, db
, expat
, libffi
, CF, configd, coreutils
, python-setup-hook
# For the Python package set
, pkgs, packageOverrides ? (self: super: {})
}:
assert x11Support -> tcl != null
&& tk != null
&& xlibsWrapper != null
&& libX11 != null;
with stdenv.lib;
let
majorVersion = "2.7";
minorVersion = "13";
minorVersionSuffix = "";
pythonVersion = majorVersion;
version = "${majorVersion}.${minorVersion}${minorVersionSuffix}";
libPrefix = "python${majorVersion}";
sitePackages = "lib/${libPrefix}/site-packages";
src = fetchurl {
url = "https://www.python.org/ftp/python/${majorVersion}.${minorVersion}/Python-${version}.tar.xz";
sha256 = "0cgpk3zk0fgpji59pb4zy9nzljr70qzgv1vpz5hq5xw2d2c47m9m";
};
hasDistutilsCxxPatch = !(stdenv.cc.isGNU or false);
patches =
[ # Look in C_INCLUDE_PATH and LIBRARY_PATH for stuff.
./search-path.patch
# Python recompiles a Python if the mtime stored *in* the
# pyc/pyo file differs from the mtime of the source file. This
# doesn't work in Nix because Nix changes the mtime of files in
# the Nix store to 1. So treat that as a special case.
./nix-store-mtime.patch
# patch python to put zero timestamp into pyc
# if DETERMINISTIC_BUILD env var is set
./deterministic-build.patch
./properly-detect-curses.patch
] ++ optionals stdenv.isLinux [
# Disable the use of ldconfig in ctypes.util.find_library (since
# ldconfig doesn't work on NixOS), and don't use
# ctypes.util.find_library during the loading of the uuid module
# (since it will do a futile invocation of gcc (!) to find
# libuuid, slowing down program startup a lot).
./no-ldconfig.patch
./glibc-2.25-enosys.patch
] ++ optionals hostPlatform.isCygwin [
./2.5.2-ctypes-util-find_library.patch
./2.5.2-tkinter-x11.patch
./2.6.2-ssl-threads.patch
./2.6.5-export-PySignal_SetWakeupFd.patch
./2.6.5-FD_SETSIZE.patch
./2.6.5-ncurses-abi6.patch
./2.7.3-dbm.patch
./2.7.3-dylib.patch
./2.7.3-getpath-exe-extension.patch
./2.7.3-no-libm.patch
] ++ optionals hasDistutilsCxxPatch [
# Patch from http://bugs.python.org/issue1222585 adapted to work with
# `patch -p1' and with a last hunk removed
# Upstream distutils is calling C compiler to compile C++ code, which
# only works for GCC and Apple Clang. This makes distutils to call C++
# compiler when needed.
./python-2.7-distutils-C++.patch
];
preConfigure = ''
# Purity.
for i in /usr /sw /opt /pkg; do
substituteInPlace ./setup.py --replace $i /no-such-path
done
'' + optionalString (stdenv ? cc && stdenv.cc.libc != null) ''
for i in Lib/plat-*/regen; do
substituteInPlace $i --replace /usr/include/ ${stdenv.cc.libc}/include/
done
'' + optionalString stdenv.isDarwin ''
substituteInPlace configure --replace '`/usr/bin/arch`' '"i386"'
substituteInPlace Lib/multiprocessing/__init__.py \
--replace 'os.popen(comm)' 'os.popen("${coreutils}/bin/nproc")'
'';
configureFlags = [
"--enable-shared"
"--with-threads"
"--enable-unicode=ucs4"
] ++ optionals (hostPlatform.isCygwin || hostPlatform.isAarch64) [
"--with-system-ffi"
] ++ optionals hostPlatform.isCygwin [
"--with-system-expat"
"ac_cv_func_bind_textdomain_codeset=yes"
] ++ optionals stdenv.isDarwin [
"--disable-toolbox-glue"
];
postConfigure = if hostPlatform.isCygwin then ''
sed -i Makefile -e 's,PYTHONPATH="$(srcdir),PYTHONPATH="$(abs_srcdir),'
'' else null;
buildInputs =
optional (stdenv ? cc && stdenv.cc.libc != null) stdenv.cc.libc ++
[ bzip2 openssl zlib ]
++ optional (hostPlatform.isCygwin || hostPlatform.isAarch64) libffi
++ optional hostPlatform.isCygwin expat
++ [ db gdbm ncurses sqlite readline ]
++ optionals x11Support [ tcl tk xlibsWrapper libX11 ]
++ optionals stdenv.isDarwin [ CF configd ];
mkPaths = paths: {
C_INCLUDE_PATH = makeSearchPathOutput "dev" "include" paths;
LIBRARY_PATH = makeLibraryPath paths;
};
# Build the basic Python interpreter without modules that have
# external dependencies.
in stdenv.mkDerivation {
name = "python-${version}";
pythonVersion = majorVersion;
inherit majorVersion version src patches buildInputs
preConfigure configureFlags;
LDFLAGS = stdenv.lib.optionalString (!stdenv.isDarwin) "-lgcc_s";
inherit (mkPaths buildInputs) C_INCLUDE_PATH LIBRARY_PATH;
NIX_CFLAGS_COMPILE = optionalString stdenv.isDarwin "-msse2";
DETERMINISTIC_BUILD = 1;
setupHook = python-setup-hook sitePackages;
postPatch = optionalString (x11Support && (tix != null)) ''
substituteInPlace "Lib/lib-tk/Tix.py" --replace "os.environ.get('TIX_LIBRARY')" "os.environ.get('TIX_LIBRARY') or '${tix}/lib'"
'';
postInstall =
''
# needed for some packages, especially packages that backport
# functionality to 2.x from 3.x
for item in $out/lib/python${majorVersion}/test/*; do
if [[ "$item" != */test_support.py*
&& "$item" != */regrtest.py* ]]; then
rm -rf "$item"
else
echo $item
fi
done
touch $out/lib/python${majorVersion}/test/__init__.py
ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb
ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb${majorVersion}
ln -s $out/share/man/man1/{python2.7.1.gz,python.1.gz}
paxmark E $out/bin/python${majorVersion}
# Python on Nix is not manylinux1 compatible. https://github.com/NixOS/nixpkgs/issues/18484
echo "manylinux1_compatible=False" >> $out/lib/${libPrefix}/_manylinux.py
rm "$out"/lib/python*/plat-*/regen # refers to glibc.dev
# Determinism: Windows installers were not deterministic.
# We're also not interested in building Windows installers.
find "$out" -name 'wininst*.exe' | xargs -r rm -f
# Determinism: rebuild all bytecode
# We exclude lib2to3 because that's Python 2 code which fails
# We rebuild three times, once for each optimization level
find $out -name "*.py" | $out/bin/python -m compileall -q -f -x "lib2to3" -i -
find $out -name "*.py" | $out/bin/python -O -m compileall -q -f -x "lib2to3" -i -
find $out -name "*.py" | $out/bin/python -OO -m compileall -q -f -x "lib2to3" -i -
'' + optionalString hostPlatform.isCygwin ''
cp libpython2.7.dll.a $out/lib
'';
passthru = let
pythonPackages = callPackage ../../../../../top-level/python-packages.nix {python=self; overrides=packageOverrides;};
in rec {
inherit libPrefix sitePackages x11Support hasDistutilsCxxPatch;
executable = libPrefix;
buildEnv = callPackage ../../wrapper.nix { python = self; };
withPackages = import ../../with-packages.nix { inherit buildEnv pythonPackages;};
pkgs = pythonPackages;
isPy2 = true;
isPy27 = true;
interpreter = "${self}/bin/${executable}";
};
enableParallelBuilding = true;
meta = {
homepage = http://python.org;
description = "A 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 = stdenv.lib.licenses.psfl;
platforms = stdenv.lib.platforms.all;
maintainers = with stdenv.lib.maintainers; [ chaoflow domenkozar ];
# Higher priority than Python 3.x so that `/bin/python` points to `/bin/python2`
# in case both 2 and 3 are installed.
priority = -100;
};
}