Message 297443 - Python tracker

There is another option.  I want to incorporate 'builtin extensions' as regular features (#27099), and move their configuration options to other tabs, which will need some reworking.  #22705 will then be less urgent. Selection from a finite set will then be from a dropdown box, like similar non-extension options. Thus #27099, which waiting on current work in process on ConfigDialog, is an alternate dependency.