[Gnu-arch-users] validating revlib integrity with hashes

[Thomas Lord]

This idea has come up a couple of times:

  John Meinel:

  > Though long term, keeping some second form of identification, like a
  > hash to validate integrity [of revlib entries] would also be nice.

It's tricky to design a good hash for that but `revc' gives it a good
try ("Arch 2.0").   Another nice feature of `revc' is that there's
(roughly speaking) no distinction between an archive and a revlib.
It's not quite literally true -- for example, you couldn't run `find'
on a `revc' archive revision the same way you could on a revlib --
but it's awfully close to literally true (for example, you *could*
run `find' if someone makes a filesystem gateway that let's revc
archives be mounted as an ordinary tree -- a small amount of new
code would allow that).

-t