On Thu, Nov 29 2018, Stefan Beller wrote:

> On Thu, Nov 29, 2018 at 7:00 AM Ævar Arnfjörð Bjarmason
> <ava...@gmail.com> wrote:
>>
>> A co-worker asked me today how space could be saved when you have
>> multiple checkouts of the same repository (at different revs) on the
>> same machine. I said since these won't block-level de-duplicate well[1]
>> one way to do this is with alternates.
>
> Another way is to use git-worktree, which would solve the gc issues
> mentioned below?
>
> I view alternates as a historic artefact as the deduping
> of objects client side can be done using worktrees, and on the
> serverside - I think - most of the git hosters use namespaces
> and put a fork network into the same repository and use pack islands.
>
> Can you elaborate on why worktrees would not solve the problem?
> (I initially was hesitant to use them as I liked going into .git and tempering
> with files such as the config directly. But now I cannot `cd .git` any more;
> it turns out the advantages outweigh this corner case that I was attached to)

This was discussed recently on-list & I chimed in with details about
that here:
https://public-inbox.org/git/87po1waqyc....@evledraar.gmail.com/ &
https://public-inbox.org/git/87muwzc2kv....@evledraar.gmail.com/

In particular the "multiple devs" use-case described in the latter
E-Mail is what I have in mind. Worktrees are inherently unsuitable for
that.

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