Settings for python executable and additional packages are very useful, but they don't cover the use case when you've a separated folder for virtualenvs.

E.g. I manage virtualenvs with virtualenvwrapper and all my virtualenvs are stored in ~/.virtualenvs/.
So in this case I just can't use $PROJECT variable.

Launching of atom from activated virtualenv doesn't work for me because usually I have more than 1 running instances of atom. So, if I've opened first instance of atom from venv1, the second instance started from venv2 will handle packages from venv1.

It'll be handy to have a $PROJECT-ROOT variable which holds only root dirname, in that case I could configure paths like ~/.virtualenvs/$PROJECT-ROOT/.

Is it possible to add this option?