1) So there is no workaround, like playing with repositories like I tried to do? I tried a couple of months ago (I upgraded to fc32 right after it was made available), I tried building otopi manually and discussed this with Didi, but the rabbit hole for the code changes required was far too deep. So along with the decision to drop fedora support for ovirt, I decided to just move to a supported environment
2) Suppose I take your approach - install CentOs 8 on a Virtual Machine. What is exactly your development process? a) How do you debug the Engine/GUI using IDE installed on your laptop? You can do remote debugging with intellij, see[1] b) What about code changes? Files' copying to a VM and building it there? I personally just use rsync, maybe you can do some tricks with and share a mount