The new plan is to give each patch a globally unique URN (something like
drobilla:synths:pad, or more pedantically urn:om:drobilla:synths:pad
etc), and have om_gtk support a patch path where any references to a
patch will be searched for. The patch path can be local directories or
remote URLs.
The result of this approach is patch repository like functionality, but
noone actually needs to set up a centralised repository, you can just
upload your patches to wherever and let people know about it, and they
can add it to their paths - or just download them all, etc.