anchor.diff:  
       src = fetchurl {
         url = "https://people.freedesktop.org/~hughsient/releases/fwupd-${version}.tar.xz";
  -      sha256 = "sha256-fr4VFKy2iNJknOzDktuSkJTaPwPPyYqcD6zKuwhJEvo=";
  +      sha256 = "sha256-QUmU06zfZ0qQ9wotoW2k4XalrRH+Y25qs/DhpJ4GKWk=";
       };
   
       patches = [
  
positive.code:     passthru = {
        filesInstalledToEtc = [
          "fwupd/daemon.conf"
          "fwupd/msr.conf"
          "fwupd/remotes.d/lvfs-testing.conf"
          "fwupd/remotes.d/lvfs.conf"
          "fwupd/remotes.d/vendor.conf"
  
negative.code: 
    self = stdenv.mkDerivation rec {
      pname = "fwupd";
      version = "1.7.7";
  
      # libfwupd goes to lib
      # daemon, plug-ins and libfwupdplugin go to out
  