The result of building the current latest commit [1] and installing on a system with a 'Testing/Bullseye' looks good.
I'm not running any automatic tests on it or so, but following worked: - Pulling a remote image both as root and rootless. - Starting a container both root and rootless. - Establishing outgoing connections from a container both root and rootless. I've also tested that at least 'podman info' doesn't fail on absent of fuse-overlayfs and slirp4netns. [1] https://salsa.debian.org/debian/libpod/tree/93569f78585a4affd7e957eb0a27c5bb9dbef580