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Homebrew Formula for Python 2.7.3 with UCS4 support
require 'formula'
class Python < Formula
homepage ''
head '', :using => :hg, :branch => '2.7'
url ''
sha1 '842c4e2aff3f016feea3c6e992c7fa96e49c9aa0'
option :universal
option 'quicktest', 'Run `make quicktest` after the build (for devs; may fail)'
option 'with-brewed-openssl', "Use Homebrew's openSSL instead of the one from OS X"
option 'with-brewed-tk', "Use Homebrew's Tk (has optional Cocoa and threads support)"
option 'with-poll', 'Enable select.poll, which is not fully implemented on OS X ('
# --with-dtrace relies on CLT as dtrace hard-codes paths to /usr
option 'with-dtrace', 'Experimental DTrace support (' if MacOS::CLT.installed?
depends_on 'pkg-config' => :build
depends_on 'readline' => :recommended
depends_on 'sqlite' => :recommended
depends_on 'gdbm' => :recommended
depends_on 'openssl' if build.with? 'brewed-openssl'
depends_on 'homebrew/dupes/tcl-tk' if build.with? 'brewed-tk'
depends_on :x11 if build.with? 'brewed-tk' and Tab.for_name('tcl-tk').used_options.include?('with-x11')
skip_clean 'bin/pip', 'bin/pip-2.7'
skip_clean 'bin/easy_install', 'bin/easy_install-2.7'
resource 'setuptools' do
url ''
sha1 'b8bf9c2b8a114045598f0e16681d6a63a4d6cdf9'
resource 'pip' do
url ''
sha1 '9766254c7909af6d04739b4a7732cc29e9a48cb0'
def patches
p = []
p << '' if build.with? 'dtrace'
# Patch to disable the search for Tk.framework, since Homebrew's Tk is
# a plain unix build. Remove `-lX11`, too because our Tk is "AquaTk".
p << DATA if build.with? 'brewed-tk'
def site_packages_cellar
# The HOMEBREW_PREFIX location of site-packages.
def site_packages
def install
opoo 'The given option --with-poll enables a somewhat broken poll() on OS X (' if build.with? 'poll'
# Unset these so that installing pip and setuptools puts them where we want
# and not into some other Python the user has installed.
args = %W[
args << '--without-gcc' if ENV.compiler == :clang
args << '--with-dtrace' if build.with? 'dtrace'
# Build with 4-byte unicode support (UCS-4)
args << '--enable-unicode=ucs4'
if superenv?
if build.universal?
args << "--enable-universalsdk=/" << "--with-universal-archs=intel"
# Allow sqlite3 module to load extensions:
inreplace("", 'sqlite_defines.append(("SQLITE_OMIT_LOAD_EXTENSION", "1"))', '') if build.with? 'sqlite'
# Allow python modules to use ctypes.find_library to find homebrew's stuff
# even if homebrew is not a /usr/local/lib. Try this with:
# `brew install enchant && pip install pyenchant`
inreplace "./Lib/ctypes/macholib/" do |f|
if build.with? 'brewed-tk'
ENV.append 'CPPFLAGS', "-I#{Formula.factory('tcl-tk').opt_prefix}/include"
ENV.append 'LDFLAGS', "-L#{Formula.factory('tcl-tk').opt_prefix}/lib"
system "./configure", *args
# HAVE_POLL is "broken" on OS X
# See: and
inreplace 'pyconfig.h', /.*?(HAVE_POLL[_A-Z]*).*/, '#undef \1' unless build.with? "poll"
system "make"
ENV.deparallelize # Installs must be serialized
# Tell Python not to install into /Applications (default for framework builds)
system "make", "install", "PYTHONAPPSDIR=#{prefix}"
# Demos and Tools
system "make", "frameworkinstallextras", "PYTHONAPPSDIR=#{share}/python"
system "make", "quicktest" if build.include? 'quicktest'
# Post-install, fix up the site-packages so that user-installed Python
# software survives minor updates, such as going from 2.7.0 to 2.7.1:
# Remove the site-packages that Python created in its Cellar.
# Create a site-packages in HOMEBREW_PREFIX/lib/python2.7/site-packages
# Symlink the prefix site-packages into the cellar.
ln_s site_packages, site_packages_cellar
# We ship setuptools and pip and reuse the PythonDependency
# Requirement here to write the
py ="2.7")
py.binary = bin/'python'
# Remove old setuptools installations that may still fly around and be
# listed in the easy_install.pth. This can break setuptools build with
# zipimport.ZipImportError: bad local file header
# setuptools-0.9.5-py3.3.egg
rm_rf Dir["#{py.global_site_packages}/setuptools*"]
rm_rf Dir["#{py.global_site_packages}/distribute*"]
setup_args = [ "-s", "", "--no-user-cfg", "install", "--force", "--verbose",
"--install-scripts=#{bin}", "--install-lib=#{site_packages}" ]
resource('setuptools').stage { system py.binary, *setup_args }
resource('pip').stage { system py.binary, *setup_args }
# And now we write the distutils.cfg
cfg = prefix/"Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/distutils.cfg"
cfg.delete if cfg.exist?
cfg.write <<-EOF.undent
# Work-around for that bug:
inreplace "#{prefix}/Frameworks/Python.framework/Versions/2.7/lib/python2.7/", 'import sys', <<-EOS.undent
import sys
from _sre import MAXREPEAT
except ImportError:
import _sre
_sre.MAXREPEAT = 65535 # this monkey-patches all other places of "from _sre import MAXREPEAT"'
# Fixes setting Python build flags for certain software
# See:
inreplace "#{prefix}/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config/Makefile" do |s|
s.change_make_var! "LINKFORSHARED",
def distutils_fix_superenv(args)
# This is not for building python itself but to allow Python's build tools
# (pip) to find brewed stuff when installing python packages.
cflags = "CFLAGS=-I#{HOMEBREW_PREFIX}/include -I#{Formula.factory('sqlite').opt_prefix}/include"
ldflags = "LDFLAGS=-L#{HOMEBREW_PREFIX}/lib -L#{Formula.factory('sqlite').opt_prefix}/lib"
if build.with? 'brewed-tk'
cflags += " -I#{Formula.factory('tcl-tk').opt_prefix}/include"
ldflags += " -L#{Formula.factory('tcl-tk').opt_prefix}/lib"
unless MacOS::CLT.installed?
# Help Python's build system (setuptools/pip) to build things on Xcode-only systems
# The looks at "-isysroot" to get the sysroot (and not at --sysroot)
cflags += " -isysroot #{MacOS.sdk_path}"
ldflags += " -isysroot #{MacOS.sdk_path}"
# Same zlib.h-not-found-bug as in env :std (see below)
args << "CPPFLAGS=-I#{MacOS.sdk_path}/usr/include"
# For the Xlib.h, Python needs this header dir with the system Tk
if build.without? 'brewed-tk'
cflags += " -I#{MacOS.sdk_path}/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers"
args << cflags
args << ldflags
# Avoid linking to libgcc
args << "MACOSX_DEPLOYMENT_TARGET=#{MacOS.version}"
# We want our readline! This is just to outsmart the detection code,
# superenv handles that cc finds includes/libs!
inreplace "",
"do_readline = self.compiler.find_library_file(lib_dirs, 'readline')",
"do_readline = '#{HOMEBREW_PREFIX}/opt/readline/lib/libhistory.dylib'"
def distutils_fix_stdenv()
# Python scans all "-I" dirs but not "-isysroot", so we add
# the needed includes with "-I" here to avoid this err:
# building dbm using ndbm
# error: /usr/include/zlib.h: No such file or directory
ENV.append 'CPPFLAGS', "-I#{MacOS.sdk_path}/usr/include" unless MacOS::CLT.installed?
# Don't use optimizations other than "-Os" here, because Python's distutils
# remembers (hint: `python3-config --cflags`) and reuses them for C
# extensions which can break software (such as scipy 0.11 fails when
# "-msse4" is present.)
# We need to enable warnings because the uses -Werror to detect
# "whether gcc supports ParseTuple" (
if ENV.compiler == :clang
# suggests to disable some Warnings.
ENV.append_to_cflags '-Wno-unused-value'
ENV.append_to_cflags '-Wno-empty-body'
ENV.append_to_cflags '-Qunused-arguments'
def caveats
Python demo
Setuptools and Pip have been installed. To update them
pip install --upgrade setuptools
pip install --upgrade pip
To symlink "Idle" and the "Python Launcher" to ~/Applications
`brew linkapps`
You can install Python packages with (the outdated easy_install or)
`pip install <your_favorite_package>`
They will install into the site-package directory
test do
# Check if sqlite is ok, because we build with --enable-loadable-sqlite-extensions
# and it can occur that building sqlite silently fails if OSX's sqlite is used.
system "#{bin}/python", "-c", "import sqlite3"
# Check if some other modules import. Then the linked libs are working.
system "#{bin}/python", "-c", "import Tkinter; root = Tkinter.Tk()"
# (Remove this hung for 2.7.6!)
diff --git a/Lib/ b/Lib/
--- a/Lib/
+++ b/Lib/
@@ -53,7 +53,7 @@ def _find_executable(executable, path=No
def _read_output(commandstring):
- """Output from succesful command execution or None"""
+ """Output from successful command execution or None"""
# Similar to os.popen(commandstring, "r").read(),
# but without actually using os.popen because that
# function is not usable during python bootstrap.
@@ -68,7 +68,7 @@ def _read_output(commandstring):
with contextlib.closing(fp) as fp:
cmd = "%s 2>/dev/null >'%s'" % (commandstring,
- return'utf-8').strip() if not os.system(cmd) else None
+ return if not os.system(cmd) else None
# X11 header find fix (and let homebrew handle this.)
diff --git a/ b/
index 716f08e..66114ef 100644
--- a/
+++ b/
@@ -1810,9 +1810,6 @@ class PyBuildExt(build_ext):
# Rather than complicate the code below, detecting and building
# AquaTk is a separate method. Only one Tkinter will be built on
# Darwin - either AquaTk, if it is found, or X11 based Tk.
- if (host_platform == 'darwin' and
- self.detect_tkinter_darwin(inc_dirs, lib_dirs)):
- return
# Assume we haven't found any of the libraries or include files
# The versions with dots are used on Unix, and the versions without
@@ -1858,21 +1855,6 @@ class PyBuildExt(build_ext):
if dir not in include_dirs:
- # Check for various platform-specific directories
- if host_platform == 'sunos5':
- include_dirs.append('/usr/openwin/include')
- added_lib_dirs.append('/usr/openwin/lib')
- elif os.path.exists('/usr/X11R6/include'):
- include_dirs.append('/usr/X11R6/include')
- added_lib_dirs.append('/usr/X11R6/lib64')
- added_lib_dirs.append('/usr/X11R6/lib')
- elif os.path.exists('/usr/X11R5/include'):
- include_dirs.append('/usr/X11R5/include')
- added_lib_dirs.append('/usr/X11R5/lib')
- else:
- # Assume default location for X11
- include_dirs.append('/usr/X11/include')
- added_lib_dirs.append('/usr/X11/lib')
# If Cygwin, then verify that X is installed before proceeding
if host_platform == 'cygwin':
@@ -1897,9 +1879,6 @@ class PyBuildExt(build_ext):
if host_platform in ['aix3', 'aix4']:
- # Finally, link with the X11 libraries (not appropriate on cygwin)
- if host_platform != "cygwin":
- libs.append('X11')
ext = Extension('_tkinter', ['_tkinter.c', 'tkappinit.c'],
define_macros=[('WITH_APPINIT', 1)] + defs,
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