Penrose: testing out the waters

[Icy-Thought]

The intention with this PR is to testout how penrose would workout in a nix-based environment.

Guess we will find out how it will perform based on how much research I do on cargo and its behaviour. Apologies to the folks who are expecting something great out of this, its my first time ever attempting to package anything related to rust for nixpkgs.. :/