[pxc]

> Can I run, let's say, IDEA or vscode from there and get all the PATH stuff right?

Yes.

But if you use an editor for many projects at once, it'll work better if different projects can have different PATHs set, in which case you can use direnv + an appropriate direnv plugin for your editor. That way you don't have to worry about launching your editor from inside nix-shell or whatever.

IIRC IDEA is still defective in this way, not allowing per-project environment variables, but Emacs, Vim/Neovim, and VSCode all handle this nicely.