this brings to mind the justification behind the SciPy distribution. I wonder if nix or something based on it has the potential to be used as a more generalized

this brings to mind the justification behind the SciPy distribution. I wonder if nix or something based on it has the potential to be used as a more generalized replacement for thinks like virtualenv? Just roll up a new user for your project with all the dependencies defined, instead of the kinda-sorta isolation of a venv and without the overhead of a vm?