Re: Shallow clones with explicit history cutoff?

[Matthias Urlichs <matthias@urlichs.de>]

Hi,

Duy Nguyen:
> On Thu, Aug 21, 2014 at 10:39 PM, Matthias Urlichs <matthias@urlichs.de> wrote:
> > What I would like to have, instead, is a version of shallow cloning which
> > cuts off not at a pre-determined depth, but at a given branch (or set of
> > branches). In other words, given
> >
> >             +-J--K  (packaged)
> >            /    /
> >   +-F--G--H----I    (clean)
> >  /       /
> > A---B---C---D---E   (upstream)
> >
> > a command "git clone --shallow-until upstream $REPO" (or however that would
> > be named) would create a shallow git archive which contains branches
> > packaged+clean, with commits FGHIJK. In contrast, with --single-branch and
> > --depth 4 I would get CGHIJK, which isn't what I'd want.
> 
> I would imagine a more generic mechanism "git clone
> --shallow-rev=<rev> $REPO" where you could pass anything that "git
> rev-list" can accept (maybe more restricted, and some verification
> required). --shallow-rev could be repeated. So in your case it could
> be "git clone --shallow-rev="^A" $REPO".

Umm, no. ^E (or ^upstream) would do what I want. Hopefully. ;-)

But you're right, that would fit far better into the existing git
paradigms.

> > As I have not spent too much time with the git sources lately (as in "None
> > at all"), some pointers where to start implementing this would be
> > appreciated, assuming (a) this has a reasonable chance of landing in git and
> > (b) nobody beats me to it. ;-)
> 
> I'd like to see this implemented. You are not the first one
> complaining about the (lack of) flexibility of --depth. If you have
> time, I may be able to support (I should not take on another topic
> given my many ongoing/unfinished topics).

Welcome to the club. :-/

Thanks for the pointers. I'll see what I can do (and when).

-- 
-- Matthias Urlichs