Skip to content

Instantly share code, notes, and snippets.

What would you like to do?
# taken from
# and adapted to use 3.3.x instead of 3.4
# Homebrew:
# Homebrew is licensed under BSD 2 Clause:
require "formula"
class Python33 < Formula
homepage ""
url ""
sha1 "0a86ae9e877467a62faed7ece208c0d6899b0991"
revision 1
VER="3.3" # The <major>.<minor> is used so often.
head "", :using => :hg, :branch => VER
option :universal
option "quicktest", "Run `make quicktest` after the build"
option "with-brewed-tk", "Use Homebrew's Tk (has optional Cocoa and threads support)"
depends_on "pkg-config" => :build
depends_on "readline" => :recommended
depends_on "sqlite" => :recommended
depends_on "gdbm" => :recommended
depends_on "openssl"
depends_on "xz" => :recommended # for the lzma module added in 3.3
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").with? "x11"
skip_clean "bin/pip3", "bin/pip-#{VER}"
skip_clean "bin/easy_install3", "bin/easy_install-#{VER}"
resource 'setuptools' do
url ''
sha1 '547eff11ea46613e8a9ba5b12a89c1010ecc4e51'
resource 'pip' do
url ''
sha1 '35ccb7430356186cf253615b70f8ee580610f734'
patch :DATA if build.with? "brewed-tk"
def site_packages_cellar
# The HOMEBREW_PREFIX location of site-packages.
def site_packages
fails_with :llvm do
build 2336
cause <<-EOS.undent
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
python.exe(14122) malloc: *** mmap(size=7310873954244194304) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
Could not import runpy module
make: *** [pybuilddir.txt] Segmentation fault: 11
# setuptools remembers the build flags python is built with and uses them to
# build packages later. Xcode-only systems need different flags.
def pour_bottle?
def install
# 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
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"))', 'pass') 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"
tcl_tk = Formula["tcl-tk"].opt_prefix
ENV.append "CPPFLAGS", "-I#{tcl_tk}/include"
ENV.append "LDFLAGS", "-L#{tcl_tk}/lib"
system "./configure", *args
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}/python3"
system "make", "quicktest" if build.include? "quicktest"
# Any .app get a " 3" attached, so it does not conflict with python 2.x.
Dir.glob("#{prefix}/*.app") { |app| mv app, app.sub(".app", "") }
# A fix, because python and python3 both want to install Python.framework
# and therefore we can't link both into HOMEBREW_PREFIX/Frameworks
["Headers", "Python", "Resources"].each{ |f| rm(prefix/"Frameworks/Python.framework/#{f}") }
rm prefix/"Frameworks/Python.framework/Versions/Current"
# Remove the site-packages that Python created in its Cellar.
def post_install
# Fix up the site-packages so that user-installed Python software survives
# minor updates, such as going from 3.3.2 to 3.3.3:
# Create a site-packages in HOMEBREW_PREFIX/lib/python#{VER}/site-packages
# Symlink the prefix site-packages into the cellar.
site_packages_cellar.unlink if site_packages_cellar.exist?
site_packages_cellar.parent.install_symlink site_packages
# Write our
rm_rf Dir["#{site_packages}/[co]"]
# 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-0.9.8-py3.3.egg
rm_rf Dir["#{site_packages}/setuptools*"]
rm_rf Dir["#{site_packages}/distribute*"]
setup_args = [ "-s", "", "install", "--force", "--verbose",
"--install-scripts=#{bin}", "--install-lib=#{site_packages}" ]
resource('setuptools').stage { system "#{bin}/python#{VER}", *setup_args }
mv bin/'easy_install', bin/"easy_install#{VER}"
resource('pip').stage { system "#{bin}/python#{VER}", *setup_args }
mv bin/'pip', bin/"pip#{VER}"
# And now we write the distutils.cfg
cfg = prefix/"Frameworks/Python.framework/Versions/#{VER}/lib/python#{VER}/distutils/distutils.cfg"
cfg.atomic_write <<-EOF.undent
def distutils_fix_superenv(args)
# To allow certain Python bindings to find brewed software (and sqlite):
sqlite = Formula["sqlite"].opt_prefix
cflags = "CFLAGS=-I#{HOMEBREW_PREFIX}/include -I#{sqlite}/include"
ldflags = "LDFLAGS=-L#{HOMEBREW_PREFIX}/lib -L#{sqlite}/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}"
args << "CPPFLAGS=-I#{MacOS.sdk_path}/usr/include" # find zlib
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 makes cc always find 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"
def sitecustomize
# This file is created by Homebrew and is executed on each python startup.
# Don't print from here, or else python command line scripts may fail!
# <>
import os
import sys
if sys.version_info[0] != 3:
# This can only happen if the user has set the PYTHONPATH for 3.x and run Python 2.x or vice versa.
# Every Python looks at the PYTHONPATH variable and we can't fix it here in,
# because the PYTHONPATH is evaluated after the Many modules (e.g. PyQt4) are
# built only for a specific version of Python and will fail with cryptic error messages.
# In the end this means: Don't set the PYTHONPATH permanently if you use different Python versions.
exit('Your PYTHONPATH points to a site-packages dir for Python 3.x but you are running Python ' +
str(sys.version_info[0]) + '.x!\\n PYTHONPATH is currently: "' + str(os.environ['PYTHONPATH']) + '"\\n' +
' You should `unset PYTHONPATH` to fix this.')
# Only do this for a brewed python:
opt_executable = "#{opt_bin}/python#{VER}"
if os.path.realpath(sys.executable) == os.path.realpath(opt_executable):
# Remove /System site-packages, and the Cellar site-packages
# which we moved to lib/pythonX.Y/site-packages. Further, remove
# HOMEBREW_PREFIX/lib/python because we later addsitedir(...).
sys.path = [ p for p in sys.path
if (not p.startswith('/System') and
not p.startswith('#{HOMEBREW_PREFIX}/lib/python') and
not (p.startswith('#{rack}') and p.endswith('site-packages'))) ]
# LINKFORSHARED (and python-config --ldflags) return the
# full path to the lib (yes, "Python" is actually the lib, not a
# dir) so that third-party software does not need to add the
# -F/#{HOMEBREW_PREFIX}/Frameworks switch.
# Assume Framework style build (default since months in brew)
from _sysconfigdata import build_time_vars
build_time_vars['LINKFORSHARED'] = '-u _PyMac_Error #{opt_prefix}/Frameworks/Python.framework/Versions/#{VER}/Python'
pass # remember: don't print here. Better to fail silently.
# Set the sys.executable to use the opt_prefix
sys.executable = opt_executable
# Tell about homebrew's site-packages location.
# This is needed for Python to parse *.pth.
import site
def caveats
text = <<-EOS.undent
Pip has been installed. To update it
pip3 install --upgrade pip
You can install Python packages with
pip3 install <package>
They will install into the site-package directory
# Tk warning only for 10.6
tk_caveats = <<-EOS.undent
Apple's Tcl/Tk is not recommended for use with Python on Mac OS X 10.6.
For more information see:
text += tk_caveats unless MacOS.version >= :lion
return text
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#{VER}", "-c", "import sqlite3"
# Check if some other modules import. Then the linked libs are working.
system "#{bin}/python#{VER}", "-c", "import tkinter; root = tkinter.Tk()"
# Homebrew's tcl-tk is build in a standard unix fashion (due to link errors)
# and we have to stop python from searching for frameworks and link against
# X11.
diff --git a/ b/
index d4183d4..9f69520 100644
--- a/
+++ b/
@@ -1623,9 +1623,6 @@ 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
@@ -1671,21 +1668,6 @@ 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':
@@ -1710,10 +1692,6 @@ 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,
include_dirs = include_dirs,
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment