Isolate home folder in nix-shell

[18fadly-anthony]

Is your feature request related to a problem? Please describe. Software from ephemeral shells leaves junk in the home folder

Describe the solution you'd like

1. nix-shell -p firefox --set-home /foo/bar equivalent of: nix-shell -p firefox && HOME=/foo/bar
2. nix-shell -p firefox --tmp-home equivalent of: nix-shell -p firefox && mkdir -p /tmp/example && HOME=/tmp/example

Describe alternatives you've considered

• manually changing HOME variable
• firejail

[GoogleBot42]

This idea reminds me a bit of x11docker. If you need a solution right now, that might work.