It should be pointed out that "guix shell" is currently only available in the unstable "latest" version, not the stable "standard" release (v1.3.0). If you are running an older version, "guix environment" is similar.

https://guix.gnu.org/manual/devel/en/html_node/Invoking-guix...

https://guix.gnu.org/en/manual/en/html_node/Invoking-guix-en...