The ability to change root dirs is needed for 0.26, so people with existing root dir sutures can migrate.
There is a branch for this:
The branch has:
- rosters have the ability to change roots
- roster_merge handles the new conflict cases this allows
The branch needs:
- an implementation of pivot_root
- NB: make sure to refuse to pivot_root if the proposed new root has a subdir named "MT"
- lots of tests
- make the roster.cc test automaton generate root dir stuff
- roster_merge stuff
- pivot_root stuff
- rosterify on db with root sutures