[theamk]

It is like overlay of many chroots / containers with some logic to preset unified view of all installed apps and to transparently switch between them.

So for example typing “mplayer” runs it in Ubuntu container, and typing “vlc” runs it in Arch container. And each container has is own libraries.

Pretty cool, but requires many rules about shared / unshared dirs. Like, home is shared but fontcache isn’t... Their release page has a long list of compatible subsystems.