How do I overwrite some default sway keybinds in home manager but not everything

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1

The recommended way seems to be to use mkOptionDefault

          keybindings = let
            inherit (config.home-manager.users.user.wayland.windowManager.sway.config) modifier menu;
          in
            lib.mkOptionDefault
            {
              "${modifier}+Space" = "exec ${menu}";
            };

it does append my new keybinds to the config but it does not replace the old one, so it results keybind conflicts. And there seems to be no way to just remove a keybind.
I’ve also seen people use mkAfter, but it overwrites the defaults for me. I also tried mkMerge but it results in a build fail.
What am I doing wrong?

2

So, the issue was that I misspelled “space” as “Space” in one of the keybinds. Now that I fixed it, the old keybind actually gets replaced and setting binds to null actually deletes them. Not sure why the latter wouldn’t work but I guess I’ll take it.