Update Guix command in .gitlab-ci.yml
Works on my machine, check if the CI still works once merged.
[En cours] Mise en place de quotas sur nos instances GitLab. Plus d'information sur : https://doc-si.inria.fr/pages/viewpage.action?pageId=146834656
[In progress] Quotas installation on our GitLab instances. More information: https://doc-si.inria.fr/pages/viewpage.action?pageId=146834656
Works on my machine, check if the CI still works once merged.