{ stdenv, fetchurl, fetchpatch , bzip2 , expat , libffi , gdbm , db , ncurses , openssl , readline , sqlite , tcl ? null, tk ? null, tix ? null, xlibsWrapper ? null, libX11 ? null, x11Support ? false , zlib , self , configd, coreutils , python-setup-hook # Some proprietary libs assume UCS2 unicode, especially on darwin :( , ucsEncoding ? 4 # For the Python package set , packageOverrides ? (self: super: {}) , buildPackages , sourceVersion , sha256 , passthruFun , static ? false }: assert x11Support -> tcl != null && tk != null && xlibsWrapper != null && libX11 != null; with stdenv.lib; let pythonForBuild = buildPackages.${"python${sourceVersion.major}${sourceVersion.minor}"}; passthru = passthruFun rec { inherit self sourceVersion packageOverrides; implementation = "cpython"; libPrefix = "python${pythonVersion}"; executable = libPrefix; pythonVersion = with sourceVersion; "${major}.${minor}"; sitePackages = "lib/${libPrefix}/site-packages"; inherit hasDistutilsCxxPatch pythonForBuild; } // { inherit ucsEncoding; }; version = with sourceVersion; "${major}.${minor}.${patch}${suffix}"; src = fetchurl { url = with sourceVersion; "https://www.python.org/ftp/python/${major}.${minor}.${patch}/Python-${version}.tar.xz"; inherit sha256; }; 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 # Fix python bug #27177 (https://bugs.python.org/issue27177) # The issue is that `match.group` only recognizes python integers # instead of everything that has `__index__`. # This bug was fixed upstream, but not backported to 2.7 (fetchpatch { name = "re_match_index.patch"; url = "https://bugs.python.org/file43084/re_match_index.patch"; sha256 = "0l9rw6r5r90iybdkp3hhl2pf0h0s1izc68h5d3ywrm92pq32wz57"; }) # Fix race-condition during pyc creation. Has a slight backwards # incompatible effect: pyc symlinks will now be overridden # (https://bugs.python.org/issue17222). Included in python >= 3.4, # backported in debian since 2013. # https://bugs.python.org/issue13146 ./atomic_pyc.patch ] ++ optionals (x11Support && stdenv.isDarwin) [ ./use-correct-tcl-tk-on-darwin.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 ] ++ optionals stdenv.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 ] ++ optional (stdenv.hostPlatform != stdenv.buildPlatform) [ ./cross-compile.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=ucs${toString ucsEncoding}" ] ++ optionals (stdenv.hostPlatform.isCygwin || stdenv.hostPlatform.isAarch64) [ "--with-system-ffi" ] ++ optionals stdenv.hostPlatform.isCygwin [ "--with-system-expat" "ac_cv_func_bind_textdomain_codeset=yes" ] ++ optionals stdenv.isDarwin [ "--disable-toolbox-glue" ] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform) [ "PYTHON_FOR_BUILD=${getBin buildPackages.python}/bin/python" "ac_cv_buggy_getaddrinfo=no" # Assume little-endian IEEE 754 floating point when cross compiling "ac_cv_little_endian_double=yes" "ac_cv_big_endian_double=no" "ac_cv_mixed_endian_double=no" "ac_cv_x87_double_rounding=yes" "ac_cv_tanh_preserves_zero_sign=yes" # Generally assume that things are present and work "ac_cv_posix_semaphores_enabled=yes" "ac_cv_broken_sem_getvalue=no" "ac_cv_wchar_t_signed=yes" "ac_cv_rshift_extends_sign=yes" "ac_cv_broken_nice=no" "ac_cv_broken_poll=no" "ac_cv_working_tzset=yes" "ac_cv_have_long_long_format=yes" "ac_cv_have_size_t_format=yes" "ac_cv_computed_gotos=yes" "ac_cv_file__dev_ptmx=yes" "ac_cv_file__dev_ptc=yes" ] # Never even try to use lchmod on linux, # don't rely on detecting glibc-isms. ++ optional stdenv.hostPlatform.isLinux "ac_cv_func_lchmod=no" ++ optional static "LDFLAGS=-static"; buildInputs = optional (stdenv ? cc && stdenv.cc.libc != null) stdenv.cc.libc ++ [ bzip2 openssl zlib ] ++ optional (stdenv.hostPlatform.isCygwin || stdenv.hostPlatform.isAarch64) libffi ++ optional stdenv.hostPlatform.isCygwin expat ++ [ db gdbm ncurses sqlite readline ] ++ optionals x11Support [ tcl tk xlibsWrapper libX11 ] ++ optional (stdenv.isDarwin && configd != null) configd; nativeBuildInputs = optionals (stdenv.hostPlatform != stdenv.buildPlatform) [ buildPackages.stdenv.cc buildPackages.python ]; mkPaths = paths: { C_INCLUDE_PATH = makeSearchPathOutput "dev" "include" paths; LIBRARY_PATH = makeLibraryPath paths; }; # Python 2.7 needs this crossCompileEnv = stdenv.lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform) { _PYTHON_HOST_PLATFORM = stdenv.hostPlatform.config; }; # Build the basic Python interpreter without modules that have # external dependencies. in with passthru; stdenv.mkDerivation ({ pname = "python"; inherit version; inherit src patches buildInputs nativeBuildInputs 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" + optionalString stdenv.hostPlatform.isMusl " -DTHREAD_STACK_SIZE=0x100000"; 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 $out/lib/${libPrefix}/test/*; do if [[ "$item" != */test_support.py* && "$item" != */test/support && "$item" != */test/regrtest.py* ]]; then rm -rf "$item" else echo $item fi done touch $out/lib/${libPrefix}/test/__init__.py ln -s $out/lib/${libPrefix}/pdb.py $out/bin/pdb ln -s $out/lib/${libPrefix}/pdb.py $out/bin/pdb${sourceVersion.major}.${sourceVersion.minor} ln -s $out/share/man/man1/{python2.7.1.gz,python.1.gz} rm "$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 '' + optionalString (stdenv.hostPlatform == stdenv.buildPlatform) '' # 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 stdenv.hostPlatform.isCygwin '' cp libpython2.7.dll.a $out/lib ''; inherit passthru; postFixup = '' # Include a sitecustomize.py file. Note it causes an error when it's in postInstall with 2.7. cp ${../../sitecustomize.py} $out/${sitePackages}/sitecustomize.py ''; enableParallelBuilding = true; doCheck = false; # expensive, and fails 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; [ fridh ]; # Higher priority than Python 3.x so that `/bin/python` points to `/bin/python2` # in case both 2 and 3 are installed. priority = -100; }; } // crossCompileEnv)