{ stdenv, hostPlatform, buildPlatform, buildPackages, 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 # Some proprietary libs assume UCS2 unicode, especially on darwin :( , ucsEncoding ? 4 # 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 = "15"; minorVersionSuffix = ""; 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 = "0x2mvz9dp11wj7p5ccvmk9s0hzjk2fa1m462p395l4r6bfnb3n92"; }; 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"; }) # "`type_getattro()` calls `tp_descr_get(self, obj, type)` without actually owning a reference to "self". # In very rare cases, this can cause a segmentation fault if "self" is deleted by the descriptor." # https://github.com/python/cpython/pull/6118 (fetchpatch { name = "type_getattro.patch"; url = "file://${./type_getattro.patch}"; sha256 = "11v9yx20hs3jmw0wggzvmw39qs4mxay4kb8iq2qjydwy9ya61nrd"; }) ] ++ 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 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=ucs${toString ucsEncoding}" ] ++ optionals (hostPlatform.isCygwin || hostPlatform.isAarch64) [ "--with-system-ffi" ] ++ optionals hostPlatform.isCygwin [ "--with-system-expat" "ac_cv_func_bind_textdomain_codeset=yes" ] ++ optionals stdenv.isDarwin [ "--disable-toolbox-glue" ] ++ optionals (hostPlatform != buildPlatform) [ "PYTHON_FOR_BUILD=${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 hostPlatform.isLinux "ac_cv_func_lchmod=no"; 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 ] ++ optional (configd != null) configd); nativeBuildInputs = optionals (hostPlatform != buildPlatform) [ buildPackages.stdenv.cc buildPackages.python ]; 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-${version}"; pythonVersion = majorVersion; inherit majorVersion version src patches buildInputs nativeBuildInputs preConfigure configureFlags; LDFLAGS = stdenv.lib.optionalString (!stdenv.isDarwin) "-lgcc_s"; inherit (mkPaths buildInputs) C_INCLUDE_PATH LIBRARY_PATH; NIX_CFLAGS_COMPILE = optionalString stdenv.isDarwin "-msse2" + optionalString hostPlatform.isMusl " -DTHREAD_STACK_SIZE=0x100000"; DETERMINISTIC_BUILD = 1; setupHook = python-setup-hook sitePackages; postPatch = optionalString (x11Support && (tix != null)) '' substituteInPlace "Lib/lib-tk/Tix.py" --replace "os.environ.get('TIX_LIBRARY')" "os.environ.get('TIX_LIBRARY') or '${tix}/lib'" ''; postInstall = '' # needed for some packages, especially packages that backport # functionality to 2.x from 3.x for item in $out/lib/python${majorVersion}/test/*; do if [[ "$item" != */test_support.py* && "$item" != */test/support && "$item" != */test/regrtest.py* ]]; then rm -rf "$item" else echo $item fi done touch $out/lib/python${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 '' + 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 hostPlatform.isCygwin '' cp libpython2.7.dll.a $out/lib ''; passthru = let pythonPackages = callPackage ../../../../../top-level/python-packages.nix {python=self; overrides=packageOverrides;}; in rec { inherit libPrefix sitePackages x11Support hasDistutilsCxxPatch ucsEncoding; executable = libPrefix; buildEnv = callPackage ../../wrapper.nix { python = self; inherit (pythonPackages) requiredPythonModules; }; withPackages = import ../../with-packages.nix { inherit buildEnv pythonPackages;}; pkgs = pythonPackages; isPy2 = true; isPy27 = true; interpreter = "${self}/bin/${executable}"; }; 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; }; }