There are things I can't uninstall or install because some needs python2 and others python3 and uninstall python2 or python3 removes one or the other (notably c

There are things I can't uninstall or install because some needs python2 and others python3 and uninstall python2 or python3 removes one or the other (notably calibre, and I just read the author won't move to py3 and that he can maintain py2 anyway). For instance I can't install mycli without removing calibre. Of course it's most likely possible to get around that with virtualenv or whatever is used at the moment but that's a huge cognitive load just to run some apps.