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require 'formula'
# This formula for Python 2.7.1
# Python 3.x is available as a separate formula:
# $ brew install python3
class Distribute < Formula
url 'http://pypi.python.org/packages/source/d/distribute/distribute-0.6.15.tar.gz'
md5 'ea52e1412e7ff560c290266ed400e216'
end
# Was a Framework build requested?
def build_framework?; ARGV.include? '--framework'; end
# Are we installed or installing as a Framework?
def as_framework?
(self.installed? and File.exists? prefix+"Frameworks/Python.framework") or build_framework?
end
class Python < Formula
url 'http://www.python.org/ftp/python/2.7.1/Python-2.7.1.tar.bz2'
homepage 'http://www.python.org/'
md5 'aa27bc25725137ba155910bd8e5ddc4f'
depends_on 'readline' => :optional # Prefer over OS X's libedit
depends_on 'sqlite' => :optional # Prefer over OS X's older version
depends_on 'gdbm' => :optional
def options
[
["--framework", "Do a 'Framework' build instead of a UNIX-style build."],
["--universal", "Build for both 32 & 64 bit Intel."],
["--static", "Build static libraries."],
["--no-poll", "Remove HAVE_POLL.* options from build."]
]
end
# Skip binaries so modules will load; skip lib because it is mostly Python files
skip_clean ['bin', 'lib']
def install
if build_framework? and ARGV.include? "--static"
onoe "Cannot specify both framework and static."
exit 99
end
args = ["--prefix=#{prefix}"]
if ARGV.build_universal?
args << "--enable-universalsdk=/" << "--with-universal-archs=intel"
end
if build_framework?
args << "--enable-framework=#{prefix}/Frameworks"
else
args << "--enable-shared" unless ARGV.include? '--static'
end
# allow sqlite3 module to load extensions
inreplace "setup.py",
'sqlite_defines.append(("SQLITE_OMIT_LOAD_EXTENSION", "1"))', ''
system "./configure", *args
if ARGV.include? '--no-poll'
inreplace 'pyconfig.h', /.*?(HAVE_POLL[_A-Z]*).*/, '#undef \1'
end
system "make"
ENV.j1 # Installs must be serialized
system "make install"
# Post-install, fix up the site-packages and install-scripts folders
# 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.
site_packages.rmtree
# Create a site-packages in the prefix.
prefix_site_packages.mkpath
# Symlink the prefix site-packages into the cellar.
ln_s prefix_site_packages, site_packages
# Tell distutils-based installers where to put scripts
scripts_folder.mkpath
(effective_lib+"python2.7/distutils/distutils.cfg").write <<-EOF.undent
[install]
install-scripts=#{scripts_folder}
EOF
# Install distribute. The user can then do:
# $ easy_install pip
# $ pip install --upgrade distribute
# to get newer versions of distribute outside of Homebrew.
Distribute.new.brew { system "#{bin}/python", "setup.py", "install" }
end
def caveats
framework_caveats = <<-EOS.undent
Framework Python was installed to:
#{prefix}/Frameworks/Python.framework
You may want to symlink this Framework to a standard OS X location,
such as:
mkdir ~/Frameworks
ln -s "#{prefix}/Frameworks/Python.framework" ~/Frameworks
EOS
general_caveats = <<-EOS.undent
A "distutils.cfg" has been written, specifing the install-scripts folder as:
#{scripts_folder}
If you install Python packages via "python setup.py install", easy_install, pip,
any provided scripts will go into the install-scripts folder above, so you may
want to add it to your PATH.
Distribute has been installed, so easy_install is available.
To update distribute itself outside of Homebrew:
#{scripts_folder}/easy_install pip
#{scripts_folder}/pip install --upgrade distribute
See: https://github.com/mxcl/homebrew/wiki/Homebrew-and-Python
EOS
s = general_caveats
s += framework_caveats if as_framework?
return s
end
private
# Path helpers
def effective_lib
# If we're installed or installing as a Framework, then use that location.
return prefix+"Frameworks/Python.framework/Versions/2.7/lib" if as_framework?
# Otherwise use just 'lib'
return lib
end
# The Cellar location of site-packages
def site_packages
effective_lib+"python2.7/site-packages"
end
# The HOMEBREW_PREFIX location of site-packages
def prefix_site_packages
HOMEBREW_PREFIX+"lib/python2.7/site-packages"
end
def scripts_folder
HOMEBREW_PREFIX+"share/python"
end
end
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