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cpython/Mac/BuildScript/scripts/postflight.ensurepip
Ned Deily 0dd80709b5
bpo-33290: Have macOS installer remove "pip" alias (GH-6683)
Currently, "pip3 install --upgrade pip" unconditionally installs a
"pip" alias even for Python 3.  If a user has an existing Python 3.x
installed from a python.org macOS installer and then subsequently
manually updates to a new version of pip, there may now be a stray
"pip" alias in the Python 3.x framework bin directory which can cause
confusion if the user has both a Python 2.7 and 3.x installed;
if the Python 3.x fw bin directory appears early on $PATH, "pip"
might invoke the pip3 for the Python 3.x rather than the pip for
Python 2.7.  To try to mitigate this, the macOS installer script
for the ensurepip option will unconditionally remove "pip" from
the 3.x framework bin directory being updated / installed.  (The
ambiguity can be avoided by using "pythonx.y -m pip".)
2018-05-02 01:30:33 -04:00

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#!/bin/sh
#
# Install/upgrade pip.
#
PYVER="@PYVER@"
PYMAJOR="@PYMAJOR@"
FWK="/Library/Frameworks/Python.framework/Versions/${PYVER}"
RELFWKBIN="../../..${FWK}/bin"
umask 022
"${FWK}/bin/python${PYVER}" -E -s -m ensurepip --upgrade
# bpo-33290: An earlier "pip3 install --upgrade pip" may have installed
# a "pip" in the fw bin directory. For a py3 install, remove it.
rm -f "${FWK}/bin/pip"
"${FWK}/bin/python${PYVER}" -E -s -Wi \
"${FWK}/lib/python${PYVER}/compileall.py" -q -j0 \
-f -x badsyntax \
"${FWK}/lib/python${PYVER}/site-packages"
"${FWK}/bin/python${PYVER}" -E -s -Wi -O \
"${FWK}/lib/python${PYVER}/compileall.py" -q -j0 \
-f -x badsyntax \
"${FWK}/lib/python${PYVER}/site-packages"
chgrp -R admin "${FWK}/lib/python${PYVER}/site-packages" "${FWK}/bin"
chmod -R g+w "${FWK}/lib/python${PYVER}/site-packages" "${FWK}/bin"
# We do not know if the user selected the Python command-line tools
# package that installs symlinks to /usr/local/bin. So we assume
# that the command-line tools package has already completed or was
# not selected and we will only install /usr/local/bin symlinks for
# pip et al if there are /usr/local/bin/python* symlinks to our
# framework bin directory.
if [ -d /usr/local/bin ] ; then
(
install_links_if_our_fw() {
if [ "$(readlink -n ./$1)" = "${RELFWKBIN}/$1" ] ; then
shift
for fn ;
do
if [ -e "${RELFWKBIN}/${fn}" ] ; then
rm -f ./${fn}
ln -s "${RELFWKBIN}/${fn}" "./${fn}"
chgrp -h admin "./${fn}"
chmod -h g+w "./${fn}"
fi
done
fi
}
cd /usr/local/bin
# Create pipx.y and easy_install-x.y links if /usr/local/bin/pythonx.y
# is linked to this framework version
install_links_if_our_fw "python${PYVER}" \
"pip${PYVER}" "easy_install-${PYVER}"
# Create pipx link if /usr/local/bin/pythonx is linked to this version
install_links_if_our_fw "python${PYMAJOR}" \
"pip${PYMAJOR}"
# Create pip and easy_install link if /usr/local/bin/python
# is linked to this version
install_links_if_our_fw "python" \
"pip" "easy_install"
)
fi
exit 0