nwg-panel: integrate optional sysload executor (WIP; disabled by default)

hosts/common/programs/nwg-panel/config.nix

@@ -6,9 +6,10 @@
 # - add CPU/meminfo executor
 #   - use sane-sysinfo
 {
-  components,
+  controlsSettingsComponents,
   height,
   locker,
+  modulesRight,
   playerctlChars,
   windowIcon,
   windowTitle,
@@ -50,9 +51,7 @@
     modules-center = [
       "clock"
     ];
-    modules-right = [
-      "playerctl"
-    ];
+    modules-right = modulesRight;
 
     clock = {
       angle = 0.0;
@@ -80,7 +79,7 @@
       battery-low-interval = 4;  #< notify every N minutes when battery continues to remain low
       battery-low-level = 15;  #< notify if battery is lower than this percent
       # commands.battery = "";  #< optional action to perform when battery icon is clicked in the drop-down menu
-      components = components;
+      components = controlsSettingsComponents;
       click-closes = false;
       custom-items = [];
       css-name = "controls-window";
@@ -143,6 +142,20 @@
       show-name = windowTitle;
     };
 
+    executor-sysload = {
+      script = "sane-sysinfo";
+      interval = 10;
+      css-name = "";
+      on-right-click = "";
+      icon-size = 16;
+      show-icon = false;
+      tooltip-text = "";
+      on-left-click = "";
+      on-middle-click = "";
+      on-scroll-up = "";
+      on-scroll-down = "";
+    };
+
     # unused modules:
     brightness-slider = {};
     dwl-tags = {};

hosts/common/programs/nwg-panel/default.nix

@@ -48,6 +48,7 @@ in
           brightness = mkEnableOption' true "display backlight level and slider";
           mediaTitle = mkEnableOption' true "display title of current song/media";
           mediaPrevNext = mkEnableOption' true "display prev/next button in media";
+          sysload = mkEnableOption' false "display system load info (cpu/memory)";
           windowIcon = mkEnableOption' true "display icon of active window";
           windowTitle = mkEnableOption' true "display title of active window";
           workspaceNumbers = mkOption {
@@ -115,7 +116,7 @@ in
       inherit (cfg.config) locker height windowIcon windowTitle workspaceHideEmpty workspaceNumbers;
       # component order matters, mostly for the drop-down.
       # default for most tools (e.g. swaync) is brightness control above volume.
-      components =
+      controlsSettingsComponents =
         lib.optionals cfg.config.brightness [
           "brightness"
         ] ++ [
@@ -125,6 +126,11 @@ in
           "battery"
         ]
       ;
+      modulesRight = [
+        "playerctl"
+      ] ++ lib.optionals cfg.config.sysload [
+        "executor-sysload"
+      ];
       playerctlChars = if cfg.config.mediaTitle then 60 else 0;
     });