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:
Toggle snippet (6 lines)
$ du -hs ~/.cache/guix/checkouts/pjmkglp4t7znuugeurpurzikxq3tnlaywmisyr27shj7apsnalwq
$ du -hs .git
It would seem that libgit2 doesn’t do the equivalent of ‘git gc’.