require 'formula' # Python3 is the new language standard, not just a new revision. # It's somewhat incompatible with Python 2.x, therefore, the executable # "python" will always point to the 2.x version which you can get by # `brew install python`. class Distribute < Formula url 'http://pypi.python.org/packages/source/d/distribute/distribute-0.6.34.tar.gz' sha1 'b6f9cfbaf3e63833b71009812a613be13e68f5de' end class Pip < Formula url 'http://pypi.python.org/packages/source/p/pip/pip-1.2.1.tar.gz' sha1 '35db84983ef3f66a8a161d320e61d192afc233d9' end class Python3 < Formula homepage 'http://www.python.org/' url 'http://python.org/ftp/python/3.3.0/Python-3.3.0.tar.bz2' sha1 '3e1464bc2c1dfa74287bc58da81168f50b0ae5c7' VER='3.3' # The . is used so often. depends_on 'pkg-config' => :build depends_on 'readline' => :recommended depends_on 'sqlite' => :recommended depends_on 'gdbm' => :recommended depends_on 'openssl' if build.include? 'with-brewed-openssl' option :universal option 'quicktest', 'Run `make quicktest` after the build' option 'with-brewed-openssl', "Use Homebrew's openSSL instead of the one from OS X" def site_packages_cellar prefix/"Frameworks/Python.framework/Versions/#{VER}/lib/python#{VER}/site-packages" end # The HOMEBREW_PREFIX location of site-packages. def site_packages HOMEBREW_PREFIX/"lib/python#{VER}/site-packages" end # Where distribute/pip will install executable scripts. def scripts_folder HOMEBREW_PREFIX/"share/python3" end def effective_lib prefix/"Frameworks/Python.framework/Versions/#{VER}/lib" end def install # Unset these so that installing pip and distribute puts them where we want # and not into some other Python the user has installed. ENV['PYTHONPATH'] = nil ENV['PYTHONHOME'] = nil args = %W[ --prefix=#{prefix} --enable-ipv6 --datarootdir=#{share} --datadir=#{share} --enable-framework=#{prefix}/Frameworks] args << '--without-gcc' if ENV.compiler == :clang if build.universal? ENV.universal_binary args << "--enable-universalsdk" << "--with-universal-archs=intel" end distutils_fix_superenv(args) distutils_fix_stdenv # Python does not need all of X11, these bundled Headers are enough ENV.append 'CPPFLAGS', "-I#{MacOS.sdk_path}/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers" unless MacOS::CLT.installed? # Allow sqlite3 module to load extensions: http://docs.python.org/library/sqlite3.html#f1 inreplace "setup.py", 'sqlite_defines.append(("SQLITE_OMIT_LOAD_EXTENSION", "1"))', 'pass' 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 (HOMEBREW_PREFIX/'share/python3').mkpath 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").each do |app| mv app, app.gsub(".app", " 3.app") end # Post-install, fix up the site-packages and install-scripts folders # so that user-installed Python software survives minor updates, such # as going from 3.3.0 to 3.3.1: # Remove the site-packages that Python created in its Cellar. site_packages_cellar.rmtree # Create a site-packages in HOMEBREW_PREFIX/lib/python#{VER}/site-packages site_packages.mkpath # Symlink the prefix site-packages into the cellar. ln_s site_packages, site_packages_cellar # Teach python not to use things from /System # and tell it about the correct site-package dir because we moved it sitecustomize = site_packages_cellar/"sitecustomize.py" rm sitecustomize if File.exist? sitecustomize sitecustomize.write(sitecustomize_content) # "python3" and executable is forgotten for framework builds. # Make sure homebrew symlinks it to HOMEBREW_PREFIX/bin. ln_s "#{bin}/python#{VER}", "#{bin}/python3" unless (bin/"python3").exist? # Install distribute for python3 and assure there's no name clash # with what the python (2.x) formula installs. scripts_folder.mkpath setup_args = ["-s", "setup.py", "install", "--force", "--verbose", "--install-lib=#{site_packages_cellar}", "--install-scripts=#{bin}" ] Distribute.new.brew { system "#{bin}/python#{VER}", *setup_args } mv bin/'easy_install', bin/'easy_install3' Pip.new.brew { system "#{bin}/python#{VER}", *setup_args } mv bin/'pip', bin/'pip3' # Tell distutils-based installers where to put scripts (prefix/"Frameworks/Python.framework/Versions/#{VER}/lib/python#{VER}/distutils/distutils.cfg").write <<-EOF.undent [install] install-scripts=#{scripts_folder} install-lib=#{site_packages} EOF unless MacOS::CLT.installed? makefile = prefix/"Frameworks/Python.framework/Versions/#{VER}/lib/python#{VER}/config-#{VER}m/Makefile" inreplace makefile do |s| s.gsub!(/^CC=.*$/, "CC=xcrun clang") s.gsub!(/^CXX=.*$/, "CXX=xcrun clang++") s.gsub!(/^AR=.*$/, "AR=xcrun ar") s.gsub!(/^RANLIB=.*$/, "RANLIB=xcrun ranlib") end end # A temporary fix, until a homebrew # [issue on handling Frameworks](https://github.com/mxcl/homebrew/issues/15943) # is resolved. `brew install python python3` failed to link because both # provide `Python.framework`. Homebrew will need to be smarter about this, # since Frameworks are built to support multiple versions. ["Headers", "Python", "Resources"].each{ |f| rm(prefix/"Frameworks/Python.framework/#{f}") } end def distutils_fix_superenv(args) if superenv? # To allow certain Python bindings to find brewed software: cflags = "CFLAGS=-I#{HOMEBREW_PREFIX}/include" ldflags = "LDFLAGS=-L#{HOMEBREW_PREFIX}/lib" unless MacOS::CLT.installed? # Help Python's build system (distribute/pip) to build things on Xcode-only systems # The setup.py 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" end args << cflags args << ldflags # Avoid linking to libgcc http://code.activestate.com/lists/python-dev/112195/ 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 "setup.py", "do_readline = self.compiler.find_library_file(lib_dirs, 'readline')", "do_readline = '#{HOMEBREW_PREFIX}/opt/readline/lib/libhistory.dylib'" end end def distutils_fix_stdenv() if not superenv? # 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.) ENV.minimal_optimization # We need to enable warnings because the configure.in uses -Werror to detect # "whether gcc supports ParseTuple" (https://github.com/mxcl/homebrew/issues/12194) ENV.enable_warnings if ENV.compiler == :clang # http://docs.python.org/devguide/setup.html#id8 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' end end end def sitecustomize_content <<-EOF.undent # This file is created by `brew install python3` and is executed on each # python#{VER} startup. Don't print from here, or else universe will collapse. import sys import site # Only do fix 1 and 2, if the currently run python is a brewed one. if sys.executable.startswith('#{HOMEBREW_PREFIX}'): # Fix 1) # A setuptools.pth and/or easy-install.pth sitting either in # /Library/Python/2.7/site-packages or in # ~/Library/Python/2.7/site-packages can inject the # /System's Python site-packages. People then report # "OSError: [Errno 13] Permission denied" because pip/easy_install # attempts to install into # /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python # See: https://github.com/mxcl/homebrew/issues/14712 sys.path = [ p for p in sys.path if not p.startswith('/System') ] # Fix 2) # Remove brewed Python's hard-coded site-packages sys.path.remove('#{site_packages_cellar}') # Fix 3) # For all Pythons: Tell about homebrew's site-packages location. # This is needed for Python to parse *.pth files. site.addsitedir('#{site_packages}') EOF end def caveats text = <<-EOS.undent Homebrew's Python3 framework #{prefix}/Frameworks/Python.framework Distribute and Pip have been installed. To update them pip3 install --upgrade distribute pip3 install --upgrade pip To symlink "Idle 3" and the "Python Launcher 3" to ~/Applications `brew linkapps` You can install Python packages with `pip3 install ` They will install into the site-package directory #{site_packages} Executable python scripts will be put in: #{scripts_folder} so you may want to put "#{scripts_folder}" in your PATH, too. See: https://github.com/mxcl/homebrew/wiki/Homebrew-and-Python EOS # 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: http://www.python.org/download/mac/tcltk/ EOS text += tk_caveats unless MacOS.version >= :lion return text end def test # 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" end end