venator: fix build; fix blank UI on NVIDIA GPU and X11 (#515556)

pkgs/by-name/ve/venator/package.nix

@@ -26,7 +26,6 @@ rustPlatform.buildRustPackage (finalAttrs: {
     hash = "sha256-qjSB/XAxB/VbO4m9Gg/XP9332WaSm/d/ejSTrHRchHg=";
   };
 
-  cargoRoot = "venator-app";
   buildAndTestSubdir = "venator-app";
   # NOTE: don't put npmRoot here because it will break the build with "Found
   # version mismatched Tauri packages".
@@ -35,7 +34,6 @@ rustPlatform.buildRustPackage (finalAttrs: {
   postPatch = ''
     cp ${finalAttrs.src}/venator-app/package.json .
     cp ${finalAttrs.src}/venator-app/package-lock.json .
-    cp ${finalAttrs.src}/Cargo.lock venator-app/
   '';
 
   cargoHash = "sha256-OLtWDJuK9fXbpjUfidLP2nKdD49cWmqWI92bhV29054=";
@@ -58,6 +56,14 @@ rustPlatform.buildRustPackage (finalAttrs: {
     webkitgtk_4_1
   ];
 
+  # "Failed to create GBM buffer" on NVIDIA GPU and X11
+  # See https://github.com/tauri-apps/tauri/issues/9394
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
+    gappsWrapperArgs+=(
+      --set WEBKIT_DISABLE_COMPOSITING_MODE 1
+    )
+  '';
+
   passthru.updateScript = nix-update-script { };
 
   meta = {