Hi! 

My preference, most wanted to least wanted:

- inside the ebuild
  If it's not too much pain. Yes, that is a very subjective
  metric and it's what a large amount of flames has been about.

- in the filename, but not as a tail
  eg: foo-2.3.4-r2+9.build 
  yes, alternate separators might be better. 
  I like .build very much, though. What does the e in ebuild
  stand for anyway?

- in the filename, as a tail 
  eg: foo-2.3.4.ebuild-9
  I don't like this much, but it's better than never having EAPI
  versioning.


Regards,
Tobias
-- 
printk("Cool stuff's happening!\n")
        linux-2.4.3/fs/jffs/intrep.c