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systemd-sysext

systemd-sysext allows us to overlay developer content on top of /usr without impacting the base system.

Setup

# create directories
mkdir -p ~/kde/usr/lib/extension-release.d/
# create an extension-release file
cp /usr/lib/os-release ~/kde/usr/lib/extension-release.d/extension-release.kde
# make the ID ignored so updates don't break the extension
sed -i s%^ID=.*%ID=_any%g ~/kde/usr/lib/extension-release.d/extension-release.kde
# owned by root so it can't be removed
sudo chown root:root ~/kde/usr/lib/extension-release.d/extension-release.kde
# enable the extension
sudo mkdir /var/lib/extensions/
sudo ln -s $HOME/kde /var/lib/extensions/kde
sudo systemd-sysext merge
sudo systemd-sysext