349 lines
14 KiB
Ruby
349 lines
14 KiB
Ruby
class PythonAT2 < Formula
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desc "Interpreted, interactive, object-oriented programming language"
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homepage "https://www.python.org/"
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url "https://www.python.org/ftp/python/2.7.15/Python-2.7.15.tar.xz"
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sha256 "22d9b1ac5b26135ad2b8c2901a9413537e08749a753356ee913c84dbd2df5574"
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revision 1
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head "https://github.com/python/cpython.git", :branch => "2.7"
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bottle do
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rebuild 6
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sha256 "208989b262f760f29f4eb0812afca031a1ae85d245759e6a2a252ca0e31a57dd" => :mojave
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sha256 "d2bedb6e773a75ba972740260e4dadc5e7beab0c92640c8814b13bf0bafcc70d" => :high_sierra
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sha256 "b1dc52378c83b5f1a91e27680ff889724458313b89ac72f9cd0b4d469a582ebd" => :sierra
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end
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# setuptools remembers the build flags python is built with and uses them to
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# build packages later. Xcode-only systems need different flags.
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pour_bottle? do
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reason <<~EOS
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The bottle needs the Apple Command Line Tools to be installed.
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You can install them, if desired, with:
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xcode-select --install
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EOS
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satisfy { MacOS::CLT.installed? }
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end
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# Please don't add a wide/ucs4 option as it won't be accepted.
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# More details in: https://github.com/Homebrew/homebrew/pull/32368
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option "with-tcl-tk", "Use Homebrew's Tk instead of macOS Tk (has optional Cocoa and threads support)"
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deprecated_option "with-brewed-tk" => "with-tcl-tk"
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depends_on "pkg-config" => :build
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depends_on "sphinx-doc" => :build if MacOS.version > :snow_leopard
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depends_on "gdbm"
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depends_on "openssl"
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depends_on "readline"
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depends_on "sqlite"
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depends_on "tcl-tk" => :optional
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resource "setuptools" do
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url "https://files.pythonhosted.org/packages/6e/9c/6a003320b00ef237f94aa74e4ad66c57a7618f6c79d67527136e2544b728/setuptools-40.4.3.zip"
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sha256 "acbc5740dd63f243f46c2b4b8e2c7fd92259c2ddb55a4115b16418a2ed371b15"
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end
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resource "pip" do
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url "https://files.pythonhosted.org/packages/69/81/52b68d0a4de760a2f1979b0931ba7889202f302072cc7a0d614211bc7579/pip-18.0.tar.gz"
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sha256 "a0e11645ee37c90b40c46d607070c4fd583e2cd46231b1c06e389c5e814eed76"
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end
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resource "wheel" do
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url "https://files.pythonhosted.org/packages/68/f0/545cbeae75f248c4ad7c2d062672cd7e046dd325a81b74fc02c62450d133/wheel-0.32.0.tar.gz"
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sha256 "a26bc27230baaec9039972b7cb43db94b17c13e4d66a9ff6a4d46a0344c55c9a"
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end
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# Patch to disable the search for Tk.framework, since Homebrew's Tk is
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# a plain unix build. Remove `-lX11`, too because our Tk is "AquaTk".
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if build.with? "tcl-tk"
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patch do
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url "https://raw.githubusercontent.com/Homebrew/patches/42fcf22/python/brewed-tk-patch.diff"
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sha256 "15c153bdfe51a98efe48f8e8379f5d9b5c6c4015e53d3f9364d23c8689857f09"
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end
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end
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def lib_cellar
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prefix/"Frameworks/Python.framework/Versions/2.7/lib/python2.7"
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end
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def site_packages_cellar
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lib_cellar/"site-packages"
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end
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# The HOMEBREW_PREFIX location of site-packages.
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def site_packages
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HOMEBREW_PREFIX/"lib/python2.7/site-packages"
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end
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def install
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# Unset these so that installing pip and setuptools puts them where we want
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# and not into some other Python the user has installed.
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ENV["PYTHONHOME"] = nil
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ENV["PYTHONPATH"] = nil
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args = %W[
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--prefix=#{prefix}
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--enable-ipv6
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--datarootdir=#{share}
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--datadir=#{share}
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--enable-framework=#{frameworks}
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--without-ensurepip
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]
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# See upstream bug report from 22 Jan 2018 "Significant performance problems
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# with Python 2.7 built with clang 3.x or 4.x"
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# https://bugs.python.org/issue32616
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# https://github.com/Homebrew/homebrew-core/issues/22743
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if DevelopmentTools.clang_build_version >= 802 &&
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DevelopmentTools.clang_build_version < 902
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args << "--without-computed-gotos"
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end
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args << "--without-gcc" if ENV.compiler == :clang
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cflags = []
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ldflags = []
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cppflags = []
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if MacOS.sdk_path_if_needed
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# Help Python's build system (setuptools/pip) to build things on SDK-based systems
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# The setup.py looks at "-isysroot" to get the sysroot (and not at --sysroot)
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cflags << "-isysroot #{MacOS.sdk_path}"
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ldflags << "-isysroot #{MacOS.sdk_path}"
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if DevelopmentTools.clang_build_version < 1000
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cflags << "-I/usr/include" # find zlib
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end
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# For the Xlib.h, Python needs this header dir with the system Tk
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if build.without? "tcl-tk"
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# Yep, this needs the absolute path where zlib needed
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# a path relative to the SDK.
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cflags << "-I#{MacOS.sdk_path}/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers"
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end
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end
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# Avoid linking to libgcc https://code.activestate.com/lists/python-dev/112195/
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args << "MACOSX_DEPLOYMENT_TARGET=#{MacOS.version}"
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# We want our readline and openssl! This is just to outsmart the detection code,
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# superenv handles that cc finds includes/libs!
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inreplace "setup.py" do |s|
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s.gsub! "do_readline = self.compiler.find_library_file(lib_dirs, 'readline')",
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"do_readline = '#{Formula["readline"].opt_lib}/libhistory.dylib'"
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s.gsub! "/usr/local/ssl", Formula["openssl"].opt_prefix
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end
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inreplace "setup.py" do |s|
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s.gsub! "sqlite_setup_debug = False", "sqlite_setup_debug = True"
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s.gsub! "for d_ in inc_dirs + sqlite_inc_paths:",
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"for d_ in ['#{Formula["sqlite"].opt_include}']:"
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# Allow sqlite3 module to load extensions:
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# https://docs.python.org/library/sqlite3.html#f1
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s.gsub! 'sqlite_defines.append(("SQLITE_OMIT_LOAD_EXTENSION", "1"))', ""
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end
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# Allow python modules to use ctypes.find_library to find homebrew's stuff
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# even if homebrew is not a /usr/local/lib. Try this with:
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# `brew install enchant && pip install pyenchant`
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inreplace "./Lib/ctypes/macholib/dyld.py" do |f|
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f.gsub! "DEFAULT_LIBRARY_FALLBACK = [", "DEFAULT_LIBRARY_FALLBACK = [ '#{HOMEBREW_PREFIX}/lib',"
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f.gsub! "DEFAULT_FRAMEWORK_FALLBACK = [", "DEFAULT_FRAMEWORK_FALLBACK = [ '#{HOMEBREW_PREFIX}/Frameworks',"
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end
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if build.with? "tcl-tk"
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tcl_tk = Formula["tcl-tk"].opt_prefix
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cppflags << "-I#{tcl_tk}/include"
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ldflags << "-L#{tcl_tk}/lib"
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end
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args << "CFLAGS=#{cflags.join(" ")}" unless cflags.empty?
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args << "LDFLAGS=#{ldflags.join(" ")}" unless ldflags.empty?
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args << "CPPFLAGS=#{cppflags.join(" ")}" unless cppflags.empty?
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system "./configure", *args
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system "make"
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ENV.deparallelize do
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# Tell Python not to install into /Applications
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system "make", "install", "PYTHONAPPSDIR=#{prefix}"
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system "make", "frameworkinstallextras", "PYTHONAPPSDIR=#{pkgshare}"
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end
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# Fixes setting Python build flags for certain software
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# See: https://github.com/Homebrew/homebrew/pull/20182
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# https://bugs.python.org/issue3588
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inreplace lib_cellar/"config/Makefile" do |s|
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s.change_make_var! "LINKFORSHARED",
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"-u _PyMac_Error $(PYTHONFRAMEWORKINSTALLDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)"
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end
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# Prevent third-party packages from building against fragile Cellar paths
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inreplace [lib_cellar/"_sysconfigdata.py",
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lib_cellar/"config/Makefile",
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frameworks/"Python.framework/Versions/Current/lib/pkgconfig/python-2.7.pc"],
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prefix, opt_prefix
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# Symlink the pkgconfig files into HOMEBREW_PREFIX so they're accessible.
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(lib/"pkgconfig").install_symlink Dir[frameworks/"Python.framework/Versions/Current/lib/pkgconfig/*"]
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# Remove 2to3 because Python 3 also installs it
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rm bin/"2to3"
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# Remove the site-packages that Python created in its Cellar.
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site_packages_cellar.rmtree
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(libexec/"setuptools").install resource("setuptools")
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(libexec/"pip").install resource("pip")
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(libexec/"wheel").install resource("wheel")
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if MacOS.version > :snow_leopard
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cd "Doc" do
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system "make", "html"
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doc.install Dir["build/html/*"]
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end
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end
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end
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def post_install
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# Avoid conflicts with lingering unversioned files from Python 3
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rm_f %W[
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#{HOMEBREW_PREFIX}/bin/easy_install
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#{HOMEBREW_PREFIX}/bin/pip
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#{HOMEBREW_PREFIX}/bin/wheel
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]
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# Fix up the site-packages so that user-installed Python software survives
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# minor updates, such as going from 2.7.0 to 2.7.1:
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# Create a site-packages in HOMEBREW_PREFIX/lib/python2.7/site-packages
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site_packages.mkpath
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# Symlink the prefix site-packages into the cellar.
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site_packages_cellar.unlink if site_packages_cellar.exist?
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site_packages_cellar.parent.install_symlink site_packages
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# Write our sitecustomize.py
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rm_rf Dir["#{site_packages}/sitecustomize.py[co]"]
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(site_packages/"sitecustomize.py").atomic_write(sitecustomize)
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# Remove old setuptools installations that may still fly around and be
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# listed in the easy_install.pth. This can break setuptools build with
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# zipimport.ZipImportError: bad local file header
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# setuptools-0.9.5-py3.3.egg
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rm_rf Dir["#{site_packages}/setuptools*"]
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rm_rf Dir["#{site_packages}/distribute*"]
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rm_rf Dir["#{site_packages}/pip[-_.][0-9]*", "#{site_packages}/pip"]
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setup_args = ["-s", "setup.py", "--no-user-cfg", "install", "--force",
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"--verbose",
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"--single-version-externally-managed",
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"--record=installed.txt",
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"--install-scripts=#{bin}",
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"--install-lib=#{site_packages}"]
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(libexec/"setuptools").cd { system "#{bin}/python", *setup_args }
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(libexec/"pip").cd { system "#{bin}/python", *setup_args }
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(libexec/"wheel").cd { system "#{bin}/python", *setup_args }
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# When building from source, these symlinks will not exist, since
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# post_install happens after linking.
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%w[pip pip2 pip2.7 easy_install easy_install-2.7 wheel].each do |e|
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(HOMEBREW_PREFIX/"bin").install_symlink bin/e
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end
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# Help distutils find brewed stuff when building extensions
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include_dirs = [HOMEBREW_PREFIX/"include", Formula["openssl"].opt_include,
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Formula["sqlite"].opt_include]
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library_dirs = [HOMEBREW_PREFIX/"lib", Formula["openssl"].opt_lib,
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Formula["sqlite"].opt_lib]
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if build.with? "tcl-tk"
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include_dirs << Formula["tcl-tk"].opt_include
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library_dirs << Formula["tcl-tk"].opt_lib
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end
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cfg = lib_cellar/"distutils/distutils.cfg"
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cfg.atomic_write <<~EOS
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[install]
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prefix=#{HOMEBREW_PREFIX}
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[build_ext]
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include_dirs=#{include_dirs.join ":"}
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library_dirs=#{library_dirs.join ":"}
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EOS
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end
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def sitecustomize
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<<~EOS
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# This file is created by Homebrew and is executed on each python startup.
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# Don't print from here, or else python command line scripts may fail!
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# <https://docs.brew.sh/Homebrew-and-Python>
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import re
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import os
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import sys
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if sys.version_info[0] != 2:
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# This can only happen if the user has set the PYTHONPATH for 3.x and run Python 2.x or vice versa.
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# Every Python looks at the PYTHONPATH variable and we can't fix it here in sitecustomize.py,
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# because the PYTHONPATH is evaluated after the sitecustomize.py. Many modules (e.g. PyQt4) are
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# built only for a specific version of Python and will fail with cryptic error messages.
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# In the end this means: Don't set the PYTHONPATH permanently if you use different Python versions.
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exit('Your PYTHONPATH points to a site-packages dir for Python 2.x but you are running Python ' +
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str(sys.version_info[0]) + '.x!\\n PYTHONPATH is currently: "' + str(os.environ['PYTHONPATH']) + '"\\n' +
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' You should `unset PYTHONPATH` to fix this.')
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# Only do this for a brewed python:
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if os.path.realpath(sys.executable).startswith('#{rack}'):
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# Shuffle /Library site-packages to the end of sys.path and reject
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# paths in /System pre-emptively (#14712)
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library_site = '/Library/Python/2.7/site-packages'
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library_packages = [p for p in sys.path if p.startswith(library_site)]
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sys.path = [p for p in sys.path if not p.startswith(library_site) and
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not p.startswith('/System')]
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# .pth files have already been processed so don't use addsitedir
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sys.path.extend(library_packages)
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# the Cellar site-packages is a symlink to the HOMEBREW_PREFIX
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# site_packages; prefer the shorter paths
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long_prefix = re.compile(r'#{rack}/[0-9\._abrc]+/Frameworks/Python\.framework/Versions/2\.7/lib/python2\.7/site-packages')
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sys.path = [long_prefix.sub('#{site_packages}', p) for p in sys.path]
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# LINKFORSHARED (and python-config --ldflags) return the
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# full path to the lib (yes, "Python" is actually the lib, not a
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# dir) so that third-party software does not need to add the
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# -F/#{HOMEBREW_PREFIX}/Frameworks switch.
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try:
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from _sysconfigdata import build_time_vars
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build_time_vars['LINKFORSHARED'] = '-u _PyMac_Error #{opt_prefix}/Frameworks/Python.framework/Versions/2.7/Python'
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except:
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pass # remember: don't print here. Better to fail silently.
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# Set the sys.executable to use the opt_prefix
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sys.executable = '#{opt_bin}/python2.7'
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EOS
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end
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def caveats; <<~EOS
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Pip and setuptools have been installed. To update them
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pip install --upgrade pip setuptools
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You can install Python packages with
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pip install <package>
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They will install into the site-package directory
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#{site_packages}
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See: https://docs.brew.sh/Homebrew-and-Python
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EOS
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end
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test do
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# Check if sqlite is ok, because we build with --enable-loadable-sqlite-extensions
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# and it can occur that building sqlite silently fails if OSX's sqlite is used.
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system "#{bin}/python", "-c", "import sqlite3"
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# Check if some other modules import. Then the linked libs are working.
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system "#{bin}/python", "-c", "import Tkinter; root = Tkinter.Tk()"
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system "#{bin}/python", "-c", "import gdbm"
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system bin/"pip", "list", "--format=columns"
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end
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end
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