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bug#41604: guix pull impossible after rebasing a local repository

From: zimoun
Subject: bug#41604: guix pull impossible after rebasing a local repository
Date: Fri, 5 Jun 2020 03:44:47 +0200

Hi John,

On Thu, 4 Jun 2020 at 16:12, John Soo <jsoo1@asu.edu> wrote:

> Oh nice, then this whole issue I think should be to report that
> --allow-downgrades does not allow everything.  When I first reported the
> issue I tried --allow-downgrades thanks to some help on IRC.  The first
> attempt failed as I mentioned previously in the thread.  However I did
> just try --allow-downgrades again after a rebase and it seems to have
> succeeded.  With that, I think this issue can be closed.  Thanks for
> thinking of this case!

Well, there is 2 issues, I guess.  One is fixed by allow downgrade.

The other one is not about '--allow-downgrades' but simply about pull
from a removed commit (rebase).  I do not think it could be considered
as a bug but the behaviour has changed and '--allow-downgrades' is not
enough.  Well, if I understand correctly what you described before in
this thread. :-)

> I think I will add some notes about a rebase workflow and
> --allow-downgrades to the contributing documentation. Looking just now
> I'm not sure using a local source tree as a channel is mentioned in the
> documentation either. I will open a different patch set to deal with
> those issues.

IMHO, the trick to be able to pull from a removed commit is to switch
generation first.  The price to pay is that history will be lost and
so news will be screwed up.

Well, for sure describe your workflow could be an entry of the Cookbook. :-)

All the best,

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