diskimage-builder/diskimage_builder/elements/gentoo/pre-install.d/02-gentoo-04-install-desired-python
Matthew Thode 89f95a5351
enable caching for gentoo builds
To facilitate this I've created two new environment variables to set
the environment and default options for package actions.

eval is needed for the export as it preserves quotes.

Change-Id: Ib03651ee8dacd48cd1c135afd57cd31101356056
Signed-off-by: Matthew Thode <mthode@mthode.org>
2018-10-15 23:17:37 -05:00

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#!/bin/bash
if [[ ${DIB_DEBUG_TRACE:-0} -gt 0 ]]; then
set -x
fi
set -eu
set -o pipefail
if mountpoint -q /dev/shm; then
echo "/dev/shm found in /proc/self/mountinfo"
elif [[ -k /dev/shm ]]; then
echo "/dev/shm exists and is stickied"
else
fix_shm
fi
if [[ ! -f /usr/portage/profiles ]]; then
emerge-webrsync -q
fi
# python-3.6 and python-3.5 are masked and considered unstable for some reason
echo "PYTHON_TARGETS=\"${GENTOO_PYTHON_TARGETS}\"" >> /etc/portage/make.conf
if [[ "${GENTOO_PYTHON_TARGETS}" == *"python3_6"* ]]; then
echo -e "-python_targets_python3_6\n-python_single_target_python3_6" >> /etc/portage/profile/use.stable.mask
echo 'dev-lang/python:3.6 ~amd64' >> /etc/portage/package.keywords/python
echo '~dev-python/setuptools-36.0.1 ~amd64' >> /etc/portage/package.keywords/python
echo '~dev-python/pyxattr-0.6.0 ~amd64' >> /etc/portage/package.keywords/python
echo '~sys-apps/kmod-24 ~amd64' >> /etc/portage/package.keywords/python
[[ ! -e /usr/lib64/libpython3.6m.so ]] && emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --oneshot dev-lang/python:3.6
fi
[[ "${GENTOO_PYTHON_TARGETS}" == *"python3_5"* ]] && [[ ! -e /usr/lib64/libpython3.5m.so ]] && emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --oneshot dev-lang/python:3.5
[[ "${GENTOO_PYTHON_TARGETS}" == *"python3_4"* ]] && [[ ! -e /usr/lib64/libpython3.4m.so ]] && emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --oneshot dev-lang/python:3.4
[[ "${GENTOO_PYTHON_TARGETS}" == *"python2_7"* ]] && [[ ! -e /usr/lib64/libpython2.7.so ]] && emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --oneshot dev-lang/python:2.7
# disable python in git if we have to, it only supports python-2.7
if [[ "${GENTOO_PYTHON_TARGETS}" != *"python2_7"* ]]; then
echo 'dev-vcs/git -python' >> /etc/portage/package.use/git
fi
# make sure we have the new python for portage bevore we possibly remove python 2.7
# this is done one by one with nodeps because it can sometimes have dependency loops
PYTHON_PACKAGES="dev-python/six dev-python/packaging dev-python/pyparsing dev-python/appdirs dev-python/setuptools dev-python/certifi"
for PACKAGE in ${PYTHON_PACKAGES}; do
emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --oneshot --update --newuse --deep --nodeps "${PACKAGE}"
done
emerge ${GENTOO_EMERGE_DEFAULT_OPTS} --oneshot --update --newuse --deep --complete-graph=y sys-apps/portage dev-python/pyxattr
# set the active python version
eselect python set ${GENTOO_PYTHON_ACTIVE_VERSION}
# allow these uninstalls to fail as they may not be installed to begin with
set +e
[[ "${GENTOO_PYTHON_TARGETS}" != *"python2_7"* ]] && emerge -C -q dev-lang/python:2.7
[[ "${GENTOO_PYTHON_TARGETS}" != *"python3_4"* ]] && emerge -C -q dev-lang/python:3.4
[[ "${GENTOO_PYTHON_TARGETS}" != *"python3_5"* ]] && emerge -C -q dev-lang/python:3.5
[[ "${GENTOO_PYTHON_TARGETS}" != *"python3_6"* ]] && emerge -C -q dev-lang/python:3.6
set -e
# 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