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homebrew-core/Formula/python@3.8.rb

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class PythonAT38 < Formula
desc "Interpreted, interactive, object-oriented programming language"
homepage "https://www.python.org/"
url "https://www.python.org/ftp/python/3.8.8/Python-3.8.8.tar.xz"
sha256 "7c664249ff77e443d6ea0e4cf0e587eae918ca3c48d081d1915fe2a1f1bcc5cc"
license "Python-2.0"
revision 1
livecheck do
url "https://www.python.org/ftp/python/"
regex(%r{href=.*?v?(3\.8(?:\.\d+)*)/?["' >]}i)
end
bottle do
sha256 arm64_big_sur: "d69d6259b306244ad832f35ce26982b51c3886798466048482fceb30a3b8af9e"
sha256 big_sur: "17d85e5de9771365d769bad9bd7cc3f126f3eaa004c3ff684368a930d7fa710f"
sha256 catalina: "898ace209da0f175407aad47f4076bb8a3ba40b9d3ef8480ad93abf733d284ed"
sha256 mojave: "f185acb02fb2c9c5c884d4b94f878ebcce1f42302f56c073407c27d6e261a579"
end
# setuptools remembers the build flags python is built with and uses them to
# build packages later. Xcode-only systems need different flags.
pour_bottle? do
reason <<~EOS
The bottle needs the Apple Command Line Tools to be installed.
You can install them, if desired, with:
xcode-select --install
EOS
satisfy { MacOS::CLT.installed? }
end
keg_only :versioned_formula
depends_on "pkg-config" => :build
depends_on "gdbm"
depends_on "mpdecimal"
depends_on "openssl@1.1"
depends_on "readline"
depends_on "sqlite"
depends_on "tcl-tk"
depends_on "xz"
uses_from_macos "bzip2"
uses_from_macos "libffi"
uses_from_macos "ncurses"
uses_from_macos "unzip"
uses_from_macos "zlib"
skip_clean "bin/pip3", "bin/pip-3.4", "bin/pip-3.5", "bin/pip-3.6", "bin/pip-3.7", "bin/pip-3.8"
skip_clean "bin/easy_install3", "bin/easy_install-3.4", "bin/easy_install-3.5", "bin/easy_install-3.6",
"bin/easy_install-3.7", "bin/easy_install-3.8"
resource "setuptools" do
url "https://files.pythonhosted.org/packages/12/68/95515eaff788370246dac534830ea9ccb0758e921ac9e9041996026ecaf2/setuptools-53.0.0.tar.gz"
sha256 "1b18ef17d74ba97ac9c0e4b4265f123f07a8ae85d9cd093949fa056d3eeeead5"
end
resource "pip" do
url "https://files.pythonhosted.org/packages/b7/2d/ad02de84a4c9fd3b1958dc9fb72764de1aa2605a9d7e943837be6ad82337/pip-21.0.1.tar.gz"
sha256 "99bbde183ec5ec037318e774b0d8ae0a64352fe53b2c7fd630be1d07e94f41e5"
end
resource "wheel" do
url "https://files.pythonhosted.org/packages/ed/46/e298a50dde405e1c202e316fa6a3015ff9288423661d7ea5e8f22f589071/wheel-0.36.2.tar.gz"
sha256 "e11eefd162658ea59a60a0f6c7d493a7190ea4b9a85e335b33489d9f17e0245e"
end
# Patch for MACOSX_DEPLOYMENT_TARGET on Big Sur, not yet backported to the 3.8 branch
# https://bugs.python.org/issue42504
# https://github.com/python/cpython/pull/23556
patch do
url "https://github.com/python/cpython/commit/09a698b4.patch?full_index=1"
sha256 "a297c429ca83847d1d3ae84bdbb66e8a035731fd17955205de37c902d13300bf"
end
# Remove this block when upstream backports arm64 compatibility to the 3.8 branch
if Hardware::CPU.arm?
# Upstream PRs #20171, #21114, #21224 and #21249
patch do
url "https://raw.githubusercontent.com/Homebrew/formula-patches/cef51fde/python/3.8.7.patch"
sha256 "01ebca9fed99fd0b34abfd198e7d6137e3f851d9d1a07ded837b28c7998e810c"
end
end
# Link against libmpdec.so.3, update for mpdecimal.h symbol cleanup.
patch do
url "https://www.bytereef.org/contrib/decimal-3.8.diff"
sha256 "104083617f086375974908f619369cd64005d5ffc314038c31b8b49032280148"
end
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.
ENV["PYTHONHOME"] = nil
ENV["PYTHONPATH"] = nil
# Override the auto-detection in setup.py, which assumes a universal build.
on_macos do
ENV["PYTHON_DECIMAL_WITH_MACHINE"] = Hardware::CPU.arm? ? "uint128" : "x64"
end
xy = (buildpath/"configure.ac").read.slice(/PYTHON_VERSION, (3\.\d)/, 1)
lib_cellar = prefix/"Frameworks/Python.framework/Versions/#{xy}/lib/python#{xy}"
args = %W[
--prefix=#{prefix}
--enable-ipv6
--datarootdir=#{share}
--datadir=#{share}
--enable-framework=#{frameworks}
--enable-loadable-sqlite-extensions
--without-ensurepip
--with-dtrace
--with-openssl=#{Formula["openssl@1.1"].opt_prefix}
--with-system-libmpdec
]
# Python re-uses flags when building native modules.
# Since we don't want native modules prioritizing the brew
# include path, we move them to [C|LD]FLAGS_NODIST.
# Note: Changing CPPFLAGS causes issues with dbm, so we
# leave it as-is.
cflags = []
cflags_nodist = ["-I#{HOMEBREW_PREFIX}/include"]
ldflags = []
ldflags_nodist = ["-L#{HOMEBREW_PREFIX}/lib"]
cppflags = ["-I#{HOMEBREW_PREFIX}/include"]
if MacOS.sdk_path_if_needed
# Help Python's build system (setuptools/pip) to build things on SDK-based 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}"
end
# Avoid linking to libgcc https://mail.python.org/pipermail/python-dev/2012-February/116205.html
args << "MACOSX_DEPLOYMENT_TARGET=#{MacOS.version}"
args << "--with-tcltk-includes=-I#{Formula["tcl-tk"].opt_include}"
args << "--with-tcltk-libs=-L#{Formula["tcl-tk"].opt_lib} -ltcl8.6 -ltk8.6"
# 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(self.lib_dirs, 'readline')",
"do_readline = '#{Formula["readline"].opt_lib}/libhistory.dylib'"
inreplace "setup.py" do |s|
s.gsub! "sqlite_setup_debug = False", "sqlite_setup_debug = True"
s.gsub! "for d_ in self.inc_dirs + sqlite_inc_paths:",
"for d_ in ['#{Formula["sqlite"].opt_include}']:"
end
# 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/dyld.py" do |f|
f.gsub! "DEFAULT_LIBRARY_FALLBACK = [",
"DEFAULT_LIBRARY_FALLBACK = [ '#{HOMEBREW_PREFIX}/lib', '#{Formula["openssl@1.1"].opt_lib}',"
f.gsub! "DEFAULT_FRAMEWORK_FALLBACK = [", "DEFAULT_FRAMEWORK_FALLBACK = [ '#{HOMEBREW_PREFIX}/Frameworks',"
end
args << "CFLAGS=#{cflags.join(" ")}" unless cflags.empty?
args << "CFLAGS_NODIST=#{cflags_nodist.join(" ")}" unless cflags_nodist.empty?
args << "LDFLAGS=#{ldflags.join(" ")}" unless ldflags.empty?
args << "LDFLAGS_NODIST=#{ldflags_nodist.join(" ")}" unless ldflags_nodist.empty?
args << "CPPFLAGS=#{cppflags.join(" ")}" unless cppflags.empty?
system "./configure", *args
system "make"
ENV.deparallelize do
# Tell Python not to install into /Applications (default for framework builds)
system "make", "install", "PYTHONAPPSDIR=#{prefix}"
system "make", "frameworkinstallextras", "PYTHONAPPSDIR=#{pkgshare}"
end
# 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$/, " 3.app") }
# Prevent third-party packages from building against fragile Cellar paths
inreplace Dir[lib_cellar/"**/_sysconfigdata__darwin_darwin.py",
lib_cellar/"config*/Makefile",
frameworks/"Python.framework/Versions/3*/lib/pkgconfig/python-3.?.pc"],
prefix, opt_prefix
# Help third-party packages find the Python framework
inreplace Dir[lib_cellar/"config*/Makefile"],
/^LINKFORSHARED=(.*)PYTHONFRAMEWORKDIR(.*)/,
"LINKFORSHARED=\\1PYTHONFRAMEWORKINSTALLDIR\\2"
# Fix for https://github.com/Homebrew/homebrew-core/issues/21212
inreplace Dir[lib_cellar/"**/_sysconfigdata__darwin_darwin.py"],
%r{('LINKFORSHARED': .*?)'(Python.framework/Versions/3.\d+/Python)'}m,
"\\1'#{opt_prefix}/Frameworks/\\2'"
# Symlink the pkgconfig files into HOMEBREW_PREFIX so they're accessible.
(lib/"pkgconfig").install_symlink Dir["#{frameworks}/Python.framework/Versions/#{xy}/lib/pkgconfig/*"]
# Remove the site-packages that Python created in its Cellar.
(prefix/"Frameworks/Python.framework/Versions/#{xy}/lib/python#{xy}/site-packages").rmtree
%w[setuptools pip wheel].each do |r|
(libexec/r).install resource(r)
end
# Remove wheel test data.
# It's for people editing wheel and contains binaries which fail `brew linkage`.
rm libexec/"wheel/tox.ini"
rm_r libexec/"wheel/tests"
# Install unversioned symlinks in libexec/bin.
{
"idle" => "idle3",
"pydoc" => "pydoc3",
"python" => "python3",
"python-config" => "python3-config",
}.each do |unversioned_name, versioned_name|
(libexec/"bin").install_symlink (bin/versioned_name).realpath => unversioned_name
end
end
def post_install
ENV.delete "PYTHONPATH"
xy = (prefix/"Frameworks/Python.framework/Versions").children.min.basename.to_s
site_packages = HOMEBREW_PREFIX/"lib/python#{xy}/site-packages"
site_packages_cellar = prefix/"Frameworks/Python.framework/Versions/#{xy}/lib/python#{xy}/site-packages"
# 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#{xy}/site-packages
site_packages.mkpath
# 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 sitecustomize.py
rm_rf Dir["#{site_packages}/sitecustomize.py[co]"]
(site_packages/"sitecustomize.py").atomic_write(sitecustomize)
# 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*"]
rm_rf Dir["#{site_packages}/pip[-_.][0-9]*", "#{site_packages}/pip"]
%w[setuptools pip wheel].each do |pkg|
(libexec/pkg).cd do
system bin/"python3", "-s", "setup.py", "--no-user-cfg", "install",
"--force", "--verbose", "--install-scripts=#{bin}",
"--install-lib=#{site_packages}",
"--single-version-externally-managed",
"--record=installed.txt"
end
end
rm_rf [bin/"pip", bin/"easy_install"]
mv bin/"wheel", bin/"wheel3"
# Install unversioned symlinks in libexec/bin.
{
"pip" => "pip3",
"wheel" => "wheel3",
}.each do |unversioned_name, versioned_name|
(libexec/"bin").install_symlink (bin/versioned_name).realpath => unversioned_name
end
# Help distutils find brewed stuff when building extensions
include_dirs = [HOMEBREW_PREFIX/"include", Formula["openssl@1.1"].opt_include,
Formula["sqlite"].opt_include], Formula["tcl-tk"].opt_include
library_dirs = [HOMEBREW_PREFIX/"lib", Formula["openssl@1.1"].opt_lib,
Formula["sqlite"].opt_lib], Formula["tcl-tk"].opt_lib
cfg = prefix/"Frameworks/Python.framework/Versions/#{xy}/lib/python#{xy}/distutils/distutils.cfg"
cfg.atomic_write <<~EOS
[install]
prefix=#{HOMEBREW_PREFIX}
[build_ext]
include_dirs=#{include_dirs.join ":"}
library_dirs=#{library_dirs.join ":"}
EOS
end
def sitecustomize
xy = (prefix/"Frameworks/Python.framework/Versions").children.min.basename.to_s
<<~EOS
# 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!
# <https://docs.brew.sh/Homebrew-and-Python>
import re
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 sitecustomize.py,
# because the PYTHONPATH is evaluated after the sitecustomize.py. 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:
if os.path.realpath(sys.executable).startswith('#{rack}'):
# Shuffle /Library site-packages to the end of sys.path
library_site = '/Library/Python/#{xy}/site-packages'
library_packages = [p for p in sys.path if p.startswith(library_site)]
sys.path = [p for p in sys.path if not p.startswith(library_site)]
# .pth files have already been processed so don't use addsitedir
sys.path.extend(library_packages)
# the Cellar site-packages is a symlink to the HOMEBREW_PREFIX
# site_packages; prefer the shorter paths
long_prefix = re.compile(r'#{rack}/[0-9\._abrc]+/Frameworks/Python\.framework/Versions/#{xy}/lib/python#{xy}/site-packages')
sys.path = [long_prefix.sub('#{HOMEBREW_PREFIX/"lib/python#{xy}/site-packages"}', p) for p in sys.path]
# Set the sys.executable to use the opt_prefix. Only do this if PYTHONEXECUTABLE is not
# explicitly set and we are not in a virtualenv:
if 'PYTHONEXECUTABLE' not in os.environ and sys.prefix == sys.base_prefix:
sys.executable = '#{opt_bin}/python#{xy}'
EOS
end
def caveats
xy = if prefix.exist?
(prefix/"Frameworks/Python.framework/Versions").children.min.basename.to_s
else
version.to_s.slice(/(3\.\d)/) || "3.8"
end
<<~EOS
Python has been installed as
#{opt_bin}/python3
Unversioned symlinks `python`, `python-config`, `pip` etc. pointing to
`python3`, `python3-config`, `pip3` etc., respectively, have been installed into
#{opt_libexec}/bin
You can install Python packages with
#{opt_bin}/pip3 install <package>
They will install into the site-package directory
#{HOMEBREW_PREFIX/"lib/python#{xy}/site-packages"}
See: https://docs.brew.sh/Homebrew-and-Python
EOS
end
test do
xy = (prefix/"Frameworks/Python.framework/Versions").children.min.basename.to_s
# 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#{xy}", "-c", "import sqlite3"
# Check if some other modules import. Then the linked libs are working.
system "#{bin}/python#{xy}", "-c", "import _decimal"
system "#{bin}/python#{xy}", "-c", "import _gdbm"
system "#{bin}/python#{xy}", "-c", "import zlib"
system "#{bin}/python#{xy}", "-c", "import tkinter; root = tkinter.Tk()"
system bin/"pip3", "list", "--format=columns"
end
end
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