nixos/firefox: remove nixpkgs.config usage

nixos/modules/programs/browserpass.nix

@@ -27,6 +27,6 @@ with lib;
       "opt/brave/native-messaging-hosts/${appId}".source = source "hosts/chromium";
       "opt/brave/policies/managed/${appId}".source = source "policies/chromium";
     };
-    nixpkgs.config.firefox.enableBrowserpass = true;
+    programs.firefox.wrapperConfig.enableBrowserpass = true;
   };
 }

nixos/modules/programs/firefox.nix

@@ -36,6 +36,12 @@ in
       ];
     };
 
+    wrapperConfig = mkOption {
+      type = types.attrs;
+      default = {};
+      description = mdDoc "Arguments to pass to Firefox wrapper";
+    };
+
     policies = mkOption {
       type = policyFormat.type;
       default = { };
@@ -227,17 +233,23 @@ in
         ] ++ optionals nmh.passff [
           passff-host
         ];
+        cfg = let
+          # copy-pasted from the wrapper; TODO: figure out fix
+          applicationName = cfg.package.binaryName or (lib.getName cfg.package);
+
+          nixpkgsConfig = config.nixpkgs.config.${applicationName} or {};
+          optionConfig = cfg.wrapperConfig;
+          nmhConfig = {
+            enableBrowserpass = nmh.browserpass;
+            enableBukubrow = nmh.bukubrow;
+            enableTridactylNative = nmh.tridactyl;
+            enableUgetIntegrator = nmh.ugetIntegrator;
+            enableFXCastBridge = nmh.fxCast;
+          };
+        in nixpkgsConfig // optionConfig // nmhConfig;
       })
     ];
 
-    nixpkgs.config.firefox = {
-      enableBrowserpass = nmh.browserpass;
-      enableBukubrow = nmh.bukubrow;
-      enableTridactylNative = nmh.tridactyl;
-      enableUgetIntegrator = nmh.ugetIntegrator;
-      enableFXCastBridge = nmh.fxCast;
-    };
-
     environment.etc =
       let
         policiesJSON = policyFormat.generate "firefox-policies.json" { inherit (cfg) policies; };

nixos/modules/services/desktops/gnome/gnome-browser-connector.nix

@@ -42,6 +42,6 @@ in
 
     services.dbus.packages = [ pkgs.gnome-browser-connector ];
 
-    nixpkgs.config.firefox.enableGnomeExtensions = true;
+    programs.firefox.wrapperConfig.enableGnomeExtensions = true;
   };
 }

nixos/modules/services/x11/desktop-managers/plasma5.nix

@@ -379,7 +379,7 @@ in
       # Update the start menu for each user that is currently logged in
       system.userActivationScripts.plasmaSetup = activationScript;
 
-      nixpkgs.config.firefox.enablePlasmaBrowserIntegration = true;
+      programs.firefox.wrapperConfig.enablePlasmaBrowserIntegration = true;
     })
 
     (mkIf (cfg.kwinrc != {}) {