bug#65720: Guile-Git-managed checkouts grow way too much

[Ludovic Courtès]

Ludovic Courtès <ludo@gnu.org> skribis:

> As reported by Tobias on IRC (in the context of ‘hpcguix-web’),
> checkouts managed by Guile-Git appear to grow beyond reason.  As an
> example, here’s the same ‘.git’ managed with Guile-Git and with Git:
>
> $ du -hs 
> ~/.cache/guix/checkouts/pjmkglp4t7znuugeurpurzikxq3tnlaywmisyr27shj7apsnalwq
> 6.7G    
> /home/ludo/.cache/guix/checkouts/pjmkglp4t7znuugeurpurzikxq3tnlaywmisyr27shj7apsnalwq
> $ du -hs .git
> 517M    .git

Fixed by b150c546b04c9ebb09de9f2c39789221054f5eea.

We still need to update the ‘guix’ package so that tools that rely on
(guix git) such as the Data Service, hpcguix-web, and Cuirass, can
benefit from this change.

Ludo’.