what's needed? just notification that the selection has gone away. should the clipboard manager be able to take over the selection "seamlessly", ie, with the same timestamp etc? Doesn't seem like we need that, the clipboard will have to set a new data_source anyway, with the subset of mimetypes it offers (the clipboad manager may only offer a subset of the types offered by the original data_source)
We're not going to specify an interface for an out-of-process clipboard manager. It's not clear that there's any benefit to not just doing it in the compositor, and a given shell/desktop environment can always define custom protocol if they want something fancy. Weston now has a built-in clipboard manager, providing persistent selections.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.