paper-plane: Fix eval after gtk4 4.12.5 update

bobby285271 · bobby285271 · commit 0e123540e587 · 2024-02-12T22:21:42.000+08:00
See ac193f0, which removes all gtk4 patches. Fixes 4ccedfa. Fixes https://gist.github.com/GrahamcOfBorg/594457cf1fc2b56ce99e5ac1add2e949.
diff --git a/pkgs/by-name/pa/paper-plane/package.nix b/pkgs/by-name/pa/paper-plane/package.nix
@@ -33,7 +33,7 @@ let
   # Paper Plane requires a patch to the gtk4, but may be removed later
   # https://github.com/paper-plane-developers/paper-plane/tree/main?tab=readme-ov-file#prerequisites
   gtk4-paperplane = gtk4.overrideAttrs (prev: {
-    patches = prev.patches ++ [ "${src}/build-aux/gtk-reversed-list.patch" ];
+    patches = (prev.patches or []) ++ [ "${src}/build-aux/gtk-reversed-list.patch" ];
   });
   wrapPaperPlaneHook = wrapGAppsHook.override {
     gtk3 = gtk4-paperplane;
