jps I think that u could create different repos for the default packages like php, c, etc…
In this way user could fork and improve this package like agibsonsw did.
u can merge this improvement and pull them from repos just before building a new version…in this way u’ll have an always up to date definition, completions, etc for these core packages insted to have us to delete the old and non actual ones XD
just a suggestion XD