Wait until you discover `nix run`. If I want to one-shot a command and not even worry about dropping into and out of a shell: `nix run nixpkgs#file some_mystery

Wait until you discover `nix run`. If I want to one-shot a command and not even worry about dropping into and out of a shell: `nix run nixpkgs#file some_mystery_file.xyz` will do the trick.