[fock]

Well, you need some way to switch between different variants of Jagoust in the first setup too? And if everything is so well integrated (w/o bash-scripts and all...), just name Jagoust ;).

Noone forces people to use virtualenvs with "snek"/Python. They can always install python somewhere and "pip install" packages into the installation hierarchy, switching around different hierarchies with bash-scripts (and now have a look what all the other interactive environments do...).