Guix makes me feel good. Even in case there is package version conflict because I tried various version, I can stay calm and feel safe. Just run `guix upgrade`

Guix makes me feel good. Even in case there is package version conflict because I tried various version, I can stay calm and feel safe. Just run `guix upgrade` on the affected packages solves the problem well. An a rollback is also not far away if everything fails. Any package conflict on my old grown Debian system has made me sweat with fear after years of piled up apt packages intermixed with /usr/local installations.