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nixpkgs/pkgs/development/interpreters/python/2.7/default.nix

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{ stdenv, fetchurl, zlib ? null, zlibSupport ? true, bzip2
, sqlite, tcl, tk, x11, openssl, readline, db4, ncurses, gdbm
, darwinArchUtility ? null, darwinSwVersUtility ? null
}:
assert zlibSupport -> zlib != null;
assert stdenv.isDarwin -> darwinArchUtility != null;
assert stdenv.isDarwin -> darwinSwVersUtility != null;
with stdenv.lib;
let
majorVersion = "2.7";
version = "${majorVersion}.1";
src = fetchurl {
url = "http://www.python.org/ftp/python/${version}/Python-${version}.tar.bz2";
sha256 = "14i2c7yqa7ljmx2i2bb827n61q33zn23ax96czi8rbkyyny8gqw0";
};
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
];
postPatch = stdenv.lib.optionalString (stdenv.gcc.libc != null) ''
substituteInPlace ./Lib/plat-generic/regen \
--replace /usr/include/netinet/in.h \
${stdenv.gcc.libc}/include/netinet/in.h
'';
buildInputs =
optional (stdenv ? gcc && stdenv.gcc.libc != null) stdenv.gcc.libc ++
[ bzip2 ]
++ optional zlibSupport zlib
++ optionals stdenv.isDarwin [ darwinArchUtility darwinSwVersUtility ];
ensurePurity =
''
# Purity.
for i in /usr /sw /opt /pkg; do
substituteInPlace ./setup.py --replace $i /no-such-path
done
'';
# Build the basic Python interpreter without modules that have
# external dependencies.
python = stdenv.mkDerivation {
name = "python-${version}";
inherit majorVersion version src patches postPatch buildInputs;
C_INCLUDE_PATH = concatStringsSep ":" (map (p: "${p}/include") buildInputs);
LIBRARY_PATH = concatStringsSep ":" (map (p: "${p}/lib") buildInputs);
configureFlags = "--enable-shared --with-threads --enable-unicode --with-wctype-functions";
preConfigure = "${ensurePurity}" + optionalString stdenv.isCygwin
''
# On Cygwin, `make install' tries to read this Makefile.
mkdir -p $out/lib/python${majorVersion}/config
touch $out/lib/python${majorVersion}/config/Makefile
mkdir -p $out/include/python${majorVersion}
touch $out/include/python${majorVersion}/pyconfig.h
'';
NIX_CFLAGS_COMPILE = optionalString stdenv.isDarwin "-msse2";
setupHook = ./setup-hook.sh;
postInstall =
''
rm -rf "$out/lib/python${majorVersion}/test"
'';
passthru = {
inherit zlibSupport;
libPrefix = "python${majorVersion}";
};
enableParallelBuilding = true;
meta = {
homepage = "http://python.org";
description = "Python -- a high-level dynamically-typed programming language";
longDescription = ''
Python is a remarkably powerful dynamic programming language that
is used in a wide variety of application domains. Some of its key
distinguishing features include: clear, readable syntax; strong
introspection capabilities; intuitive object orientation; natural
expression of procedural code; full modularity, supporting
hierarchical packages; exception-based error handling; and very
high level dynamic data types.
'';
license = "GPLv2";
platforms = stdenv.lib.platforms.all;
maintainers = [ stdenv.lib.maintainers.simons ];
};
};
# This function builds a Python module included in the main Python
# distribution in a separate derivation.
buildInternalPythonModule =
{ moduleName
, internalName ? "_" + moduleName
, deps
}:
stdenv.mkDerivation rec {
name = "python-${moduleName}-${python.version}";
inherit src patches postPatch;
buildInputs = [ python ] ++ deps;
C_INCLUDE_PATH = concatStringsSep ":" (map (p: "${p}/include") buildInputs);
LIBRARY_PATH = concatStringsSep ":" (map (p: "${p}/lib") buildInputs);
configurePhase = "${ensurePurity}";
buildPhase =
''
# Fake the build environment that setup.py expects.
ln -s ${python}/include/python*/pyconfig.h .
ln -s ${python}/lib/python*/config/Setup Modules/
ln -s ${python}/lib/python*/config/Setup.local Modules/
substituteInPlace setup.py --replace 'self.extensions = extensions' \
'self.extensions = [ext for ext in self.extensions if ext.name in ["${internalName}"]]'
python ./setup.py build_ext
'';
installPhase =
''
dest=$out/lib/${python.libPrefix}/site-packages
mkdir -p $dest
cp -p $(find . -name "*.${if stdenv.isCygwin then "dll" else "so"}") $dest/
'';
};
# The Python modules included in the main Python distribution, built
# as separate derivations.
modules = {
bsddb = buildInternalPythonModule {
moduleName = "bsddb";
deps = [ db4 ];
};
curses = buildInternalPythonModule {
moduleName = "curses";
deps = [ ncurses ];
};
gdbm = buildInternalPythonModule {
moduleName = "gdbm";
internalName = "gdbm";
deps = [ gdbm ];
};
sqlite3 = buildInternalPythonModule {
moduleName = "sqlite3";
deps = [ sqlite ];
};
ssl = buildInternalPythonModule {
moduleName = "ssl";
deps = [ openssl ];
};
tkinter = buildInternalPythonModule {
moduleName = "tkinter";
deps = [ tcl tk x11 ];
};
readline = buildInternalPythonModule {
moduleName = "readline";
internalName = "readline";
deps = [ readline ];
};
};
in python // { inherit modules; }