GameCube adapter support in macOS >= 10.15

[dropbear]

What changes would be necessary for Dolphin to support the official GameCube adapter on macOS versions newer than Mojave? When Catalina came out, the Dolphin Twitter advised not updating, but they didn't specify what exactly Catalina broke.

[Craftyawesome]

AFAIK, the problem is with apple potentially enforcing notarization https://forums.dolphin-emu.org/Thread-macos-catalina-supporting?pid=498779#pid498779

It looks like the only GC adapter hurdle is 10.11 onward. https://wiki.dolphin-emu.org/index.php?title=How_to_use_the_Official_GameCube_Controller_Adapter_for_Wii_U_in_Dolphin#macOS

[JosJuice]

No, there do seem to be some additional troubles with installing the kext on 10.15, or rather, keeping the kext installed across reboots. This has thus far only been documented by the Slippi team as far as I know, and I don't know the details.