{ lib, inputs, ... }: with lib; let inherit (inputs) darwin nixpkgs; in { config = { system.checks.verifyNixPath = mkDefault false; system.darwinVersionSuffix = ".${darwin.shortRev or "dirty"}"; system.darwinRevision = mkIf (darwin ? rev) darwin.rev; system.nixpkgsVersionSuffix = ".${substring 0 8 (nixpkgs.lastModifiedDate or nixpkgs.lastModified or "19700101")}.${nixpkgs.shortRev or "dirty"}"; system.nixpkgsRevision = mkIf (nixpkgs ? rev) nixpkgs.rev; }; }