Jon Smirl wrote:
quoted text
>> About "checkouts", i.e. working directories with repository
>> elsewhere: you can use GIT_DIR environmental variable or "git
>> --git-dir" option, or symlinks, and if Nguyen Thai Ngoc D proposal
>> to have .gitdir/.git "symref"-like file to point to repository
>> passes, we can use that.
>
> I believe they mean checking out only the latest few revisions
> instead of copying the whole repo. This issue is a problem for
> Mozilla. If you want to change a line in the git version you have to
> download the entire 500MB tree with full history.

From http://bazaar-vcs.org/RcsComparisons
  A "Checkout" is a working tree that points elsewhere for its RCS data.

You can always do like Linux kernel did, splitting repository into 
current and historical part (which would contain also dead branches), 
and creating and publishing current-historical graft file, to join 
history if needed.

quoted text
>> Partial checkouts are only partially supported as of now; it means
>> you have to do some lowe level stuff to do partial checkout, and be
>> carefull when comitting. BTW it depends what you mean by partial
>> checkout, but they are somewhat incompatibile with atomic commits
>> to snapshot based repository.
> 
> I believe partial checkout means being able to check one directory
> tree out of the repo and work on it while ignoring what is happening
> in the rest of the repo. This is another issue for Mozilla which has
> multiple dependent projects checked into a single repo.

So split different projects into different repositories. There was some 
helper program (git-splitrepo or something like that) for that posted 
on git mailing list. And use "superrepository" to gather all projects 
together (see last discussion about subprojects on git mailing list).
-- 
Jakub Narebski
Poland
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