Merge pull request #42896 from sorki/gpsd_nowait

nixos/gpsd-service: add services.gpsd.nowait option

nixos/modules/services/misc/gpsd.nix

···
         '';
       };
 
+      nowait = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          don't wait for client connects to poll GPS
+        '';
+      };
+
       port = mkOption {
         type = types.int;
         default = 2947;
···
         ExecStart = ''
           ${pkgs.gpsd}/sbin/gpsd -D "${toString cfg.debugLevel}"  \
             -S "${toString cfg.port}"                             \
-            ${if cfg.readonly then "-b" else ""}                  \
+            ${optionalString cfg.readonly "-b"}                   \
+            ${optionalString cfg.nowait "-n"}                     \
             "${cfg.device}"
         '';
       };