Has anybody tried getting this to work under Proxmox (specifically) or KVM?

I previously used to use this guide for Proxmox - which uses Clover:

https://www.nicksherlock.com/2019/10/installing-macos-catali...

However, it seems like OC might be easier.

Somebody there suggested this (apparently non-open-source) EFI making script:

https://www.macos86.it/files/file/20-opencore-efi-maker/

but I can't even seem to get that working.

Another poster on this thread suggested

https://github.com/Leoyzen/KVM-Opencore

which seems like it could work - curious if other people have tried it and what their experiences are?

I’ve used this guide: https://github.com/kholia/OSX-KVM