anchor.diff:        };
   
         authorizedKeysFiles = mkOption {
  -        type = types.listOf types.unspecified;
  +        type = types.listOf types.str;
           default = [];
           description = "Files from with authorized keys are read.";
         };
  
positive.code:           };
            publicKeyFile = mkOption {
              default = null;
              type = types.nullOr types.unspecified;
              description = ''
                The path to the public key file for the host. The public
                key file is read at build time and saved in the Nix store.
  
negative.code:           };
            publicKey = mkOption {
              default = null;
              type = types.nullOr types.str;
              description = ''
                The public key data for the host. You can fetch a public key
                from a running SSH server with the <command>ssh-keyscan</command>
  