PureOS guidelines at https://tracker.pureos.net/w/development/packaging_overview/ documents how to fork packages from Debian by releasing packages with suffix pureos.

Recently in a chat a method to terminate a fork was mentioned: make a release _without_ pureos suffix.

Please document that mechanism to terminate forking a package.

To reduce the reisk of accidentally releasing a version which clashes with of supersedes a current or future Debian release, I propose that we make it mandatory that such "fork-obsolescence" release not simply drop pureos suffix but *replace* with another slightly higher-ranking suffix. Concretely I propose that we mandate the suffix purge for fork-obsolescence releases.