Ben

Add a fake devshell for impure packages

4

This should make issues like https://github.com/nix-community/dream2nix/issues/272 less common

cargo-lock translator attempting to build packages outside of requirment for rust package

8

Attempting to build: ```nix { inputs = { nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable"; dream2nix.url = "github:nix-community/dream2nix"; src.url = "github:nushell/nushell/0.67.0"; src.flake = false; }; outputs = { self, dream2nix, nixpkgs, src, ... }...