`patches` attribute removed?

So I just tried to update (unstable) for the first time in a while and I’m getting the following error in an overlay:

error: attribute 'patches' missing

       at /home/u3836/dots/overlays.nix:9:35:

            8|                       mutter = gsuper.mutter.overrideAttrs (oldAttrs: {
            9|                                patches = [ ./1441.patch ] ++ oldAttrs.patches;
             |                                   ^
           10|                       });
(use '--show-trace' to show detailed location information)

I can’t find anything about the patches attribute being removed in the changelog. How do I fix this/where do patches go now?

Turned out that it was removed from the mutter package, not changed in the language. Should’ve checked that first but got fooled by the broken arrow placement.

Changed oldAttrs.patches to (oldAttrs.patches or [])