diskimage-builder/diskimage_builder/elements/gentoo/pre-install.d/02-gentoo-04-install-desired-python
Matthew Thode eb162ec6ed
Allow Gentoo to manage python versions by itself
Gentoo can manage python versions itself.  Before this commit users were
forced to set python versions themselves.  Now they have the option to
set it if they wish.

The workaround needed for git is also no longer needed, so it's been
removed.

Change-Id: I06b259ef73a40df6b8ab92a5b424bffcf4ef764d
Signed-off-by: Matthew Thode <mthode@mthode.org>
2022-07-10 22:12:03 -05:00

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#!/bin/bash
if [[ ${DIB_DEBUG_TRACE:-0} -gt 0 ]]; then
set -x
fi
set -eu
set -o pipefail
if [[ ${GENTOO_PYTHON_TARGETS} != '' ]]; then
if mountpoint -q /dev/shm; then
echo "/dev/shm found in /proc/self/mountinfo"
elif [[ -k /dev/shm ]]; then
echo "/dev/shm exists and is stickied"
else
fix_shm
fi
[[ ! -f ${PORTDIR}/profiles ]] && emerge-webrsync -q
# set active python targets
echo "PYTHON_TARGETS=\"${GENTOO_PYTHON_TARGETS}\"" >> /etc/portage/make.conf
# install portage first due to bug in env vars not being passed when portage installs itself and re-inits
emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --update --newuse --deep sys-apps/portage
# set the active python version
emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --oneshot --update --newuse --nodeps dev-lang/python-exec dev-lang/python-exec-conf
echo yes | etc-update --automode -3 /etc/python-exec/python-exec.conf
# make world consistant
emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --complete-graph=y --update --newuse --deep @world
# rebuild packages that might need it
emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --usepkg=n @preserved-rebuild
# remove unneeded packages
emerge --verbose=n --depclean
# rebuild packages that might have somehow depended on the unneeded packages
emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --usepkg=n @preserved-rebuild
unfix_shm
fi