What exactly is virtualEnv isolating? Just python related packages or more?

Question

When I create a new virtualEnv, if I install Django inside a new environment, it's isolated. But what if I'm inside a virtualEnv and I install emacs, and mysql or such. These packages have nothing to do with python. Would the emacs and mysql packages that I installed be global or isolated to one virtualEnv only?

Thanks

Answer 1

Only python packages installed inside virtualenvironment are isolated. System packages are not.