[Gnu-arch-users] Archives vs. categories vs. versions

[Dimitrie O. Paun]

Hi folks,
I have recently stepped into the wonderful world of arch,
and am trying to put some order into all the new flexibility
that arch allows.

Namely, with arch working transparently across archives, it
is not that clear anymore where the boudaries for archives 
should be.

Consider for example a large organization, like Mozilla. They
have many projects (let's assume 100s or even 1000s for the
sake of discussion), and many of their projects are rather large.

Currently, they have one big CVS repository with everything in
it. The same can be done with arch:
  address@hidden
and inside we have:
  <project>--<branch>--<version>

But we know that big archives are a bit of a pain in arch, so
we break them (a bit arbitrary) by date:
  address@hidden

However, why not break them by project:
    address@hidden
and then inside have:
    <committer>--<branch>--<version>
(any better suggestions?)

Or even, an arhive for each version:
    address@hidden

But wait. In Firefox 1.7 we may have a new feature
for popup blocking. Why not create an archive for it:
    address@hidden

Can one do this? Is it feasible? What are the pros/cons?
Any good examples of archive/category/branch organization
out there that scales well to _large_, very active projects?

TIA,
Dimi