$ brew unlink qemu
$ brew tap avoidik/qemu-spice
$ brew install libepoxy-egl --HEAD
$ brew install virglrenderer --HEAD
$ brew install qemu-spice
based on https://github.com/orgs/Homebrew/discussions/5266
credits to @mmartial
based on https://github.com/anholt/libepoxy/pull/239
credits to @akihikodaki
based on https://github.com/akihikodaki/virglrenderer/tree/macos
credits to @akihikodaki