Re: sharing between local "work" and "nightly build" git repos

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"David Frech" <nimblemachines@xxxxxxxxx> writes:

> I'd like to share as much as possible between the two repos. My naive
> first attempt was to clone the local repo (~david/git) using -l and -s
> (which I admit I do not completely understand). This sort of worked,
> but one issue is that doing a "git pull" in nightly is going to pull
> from the *locally*-cloned repo, not from the main git. Another is that
> a checkout in nightly failed with the obscure error:
>
> [david@tashtego ~/git-nightly]% git checkout -b nightly-next next
> git checkout: updating paths is incompatible with switching branches/forcing
> Did you intend to checkout 'next' which can not be resolved as commit?
>
> I assume this is because too much state is being shared the repos, and
> something is unfinished in the "git" directory.

You assumed wrong.  "-l and -s" does not have to do anything
with the above symptoms.

git-clone helps people by setting up the new repository to
follow where you cloned from, but there is no rule that you
cannot change it.  Look at .git/config in the nightly repository
and find [remote "origin"] section; update its URL to whichever
repository you would want to track from and you are done.

"git checkout -b nightly-next next" is telling git to:

 - create a new branch nightly-next starting from 'next'
 - check it out

You most likely would want to fork off of "origin/next", not
'next' which probably does not exist in your repository.

If you are willing to redo the nightly repository from scratch,
I would probably recommend using --reference option when
cloning, like this:

 $ git clone --reference ~david/git git://git.kernel.org/... ~/nightly-git
 $ cd ~/nightly-git
 $ git checkout --track -b next origin/next

Then a nightly update would go like this:

 $ cd ~/nightly-git
 $ git pull origin next
 $ make clean
 $ make test || barf


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