nixos/coolercontrol: fix nvidia support

nixos/modules/programs/coolercontrol.nix

@@ -13,18 +13,16 @@ in
   options = {
     programs.coolercontrol = {
       enable = lib.mkEnableOption "CoolerControl GUI & its background services";
-
-      nvidiaSupport = lib.mkOption {
-        type = lib.types.bool;
-        default = lib.elem "nvidia" config.services.xserver.videoDrivers;
-        defaultText = lib.literalExpression "lib.elem \"nvidia\" config.services.xserver.videoDrivers";
-        description = ''
-          Enable support for Nvidia GPUs.
-        '';
-      };
     };
   };
 
+  imports = [
+    # Added 2025-10-25
+    (lib.mkRemovedOptionModule [ "programs" "coolercontrol" "nvidiaSupport" ] ''
+      This option is deprecated as Nvidia drivers are automatically loaded at runtime.
+    '')
+  ];
+
   ##### implementation
   config = lib.mkIf cfg.enable (
     lib.mkMerge [
@@ -47,18 +45,6 @@ in
           };
         };
       }
-
-      # Nvidia support
-      (lib.mkIf cfg.nvidiaSupport {
-        systemd.services.coolercontrold.path =
-          let
-            nvidiaPkg = config.hardware.nvidia.package;
-          in
-          [
-            nvidiaPkg # nvidia-smi
-            nvidiaPkg.settings # nvidia-settings
-          ];
-      })
     ]
   );
 

pkgs/applications/system/coolercontrol/coolercontrold.nix

@@ -4,6 +4,7 @@
   libdrm,
   coolercontrol,
   runtimeShell,
+  addDriverRunpath,
 }:
 
 {
@@ -20,6 +21,7 @@ rustPlatform.buildRustPackage {
   cargoHash = "sha256-ZyYyQcaYd3VZ7FL0Hki33JO3LscPfBT5gl+nw2cXvUs=";
 
   buildInputs = [ libdrm ];
+  nativeBuildInputs = [ addDriverRunpath ];
 
   postPatch = ''
     # copy the frontend static resources to a directory for embedding
@@ -37,6 +39,10 @@ rustPlatform.buildRustPackage {
       --replace-fail '/usr/bin' "$out/bin"
   '';
 
+  postFixup = ''
+    addDriverRunpath "$out/bin/coolercontrold"
+  '';
+
   passthru.tests.version = testers.testVersion {
     package = coolercontrol.coolercontrold;
     # coolercontrold prints its version with "v" prefix