Funny that you all think the same. Distrobox and Toolbox use different languages, but work similarly. Distrobox is nearly perfect in its tooling, and just saves so much trouble.
It works just as reliably, I guess, as I ditched toolbox a while ago.
On Kinoite I now have
- Dev Ubuntu container for adb, compiling stuff and using the PPA VLC 4.0
- Fedora Container for RStudio (+ COPR for modules), QGis and others
- Debian testing container for Ardour
- Arch container including AUR
- Opensuse Leap container for weird old programs
It works as a charm. GUI integration of packages is no problem, CLI integration too.