nixos/programs/fish: use `inherit` instead of `with`

              package:

              pkgs.runCommandLocal

                (

                  with lib.strings;

                  let

                    inherit (lib.strings) stringLength substring storeDir;

                    storeLength = stringLength storeDir + 34; # Nix' StorePath::HashLen + 2 for the separating slash and dash

                    pathName = substring storeLength (stringLength package - storeLength) package;

                  in