sxmo: bring wob service in-house

hosts/common/programs/default.nix

@@ -80,6 +80,7 @@
     ./wike.nix
     ./wine.nix
     ./wireshark.nix
+    ./wob.nix
     ./xarchiver.nix
     ./zeal.nix
     ./zsh

hosts/common/programs/wob.nix

@@ -0,0 +1,40 @@
+{ config, lib, ... }:
+let
+  cfg = config.sane.programs.wob;
+in
+{
+  sane.programs.wob = {
+    configOption = with lib; mkOption {
+      default = {};
+      type = types.submodule {
+        options.autostart = mkOption {
+          type = types.bool;
+          default = true;
+        };
+        options.sock = mkOption {
+          type = types.str;
+          default = "sxmo.wobsock";
+        };
+      };
+    };
+
+    services.wob = {
+      description = "Wayland Overlay Bar (renders volume/backlight levels)";
+      wantedBy = lib.mkIf cfg.config.autostart [ "default.target" ];
+      serviceConfig = {
+        # ExecStart = "${cfg.package}/bin/wob";
+        Type = "simple";
+        Restart = "always";
+        RestartSec = "20s";
+      };
+      script = ''
+        wobsock="$XDG_RUNTIME_DIR/${cfg.config.sock}"
+        rm -f "$wobsock" || true
+        mkfifo "$wobsock" && ${cfg.package}/bin/wob <> "$wobsock"
+
+        # TODO: cleanup should be done in a systemd OnFailure, or OnExit, or whatever
+        rm -f "$wobsock"
+      '';
+    };
+  };
+}

hosts/modules/gui/sxmo/default.nix

@@ -265,9 +265,10 @@ in
         suggestedPrograms = [
           "guiApps"
           "bemenu"  # specifically to import its theming
-          "sfeed"      # want this here so that the user's ~/.sfeed/sfeedrc gets created
-          # "superd"     # make superctl (used by sxmo) be on PATH
+          "sfeed"   # want this here so that the user's ~/.sfeed/sfeedrc gets created
+          # "superd"  # make superctl (used by sxmo) be on PATH
           # "sway-autoscaler"
+          "wob"  # volume/brightness on-screen display
         ];
 
         persist.byStore.cryptClearOnBoot = [
@@ -645,7 +646,7 @@ in
           sxmo_networkmonitor = sxmoService "networkmonitor";
           sxmo_notificationmonitor = sxmoService "notificationmonitor";
           sxmo_soundmonitor = sxmoService "soundmonitor";
-          sxmo_wob = sxmoService "wob";
+          # sxmo_wob = sxmoService "wob";
           sxmo-x11-status = sxmoService "status_xsetroot";
 
           bonsaid.path = sxmoPath;

hosts/modules/gui/sxmo/hooks/sxmo_hook_start.sh

@@ -18,7 +18,7 @@ sxmo_jobs.sh start daemon_manager
 # TODO: start these externally, via `wantedBy` in nix
 # don't: i don't use mako
 #   superctl start mako
-systemctl --user start sxmo_wob
+# systemctl --user start sxmo_wob
 systemctl --user start sxmo_menumode_toggler
 systemctl --user start bonsaid
 # don't: sway background is managed externally