That's been my experience as well. It lacks support for certain clone(2) flags like CLONE_VFORK[1], which limits the set of non-trivial programs it can run, and

That's been my experience as well. It lacks support for certain clone(2) flags like CLONE_VFORK[1], which limits the set of non-trivial programs it can run, and since running non-trivial programs is most of the point, I haven't revisited it since it was first announced. [1] https://github.com/facebookexperimental/hermit/blob/bd3153b4bd311831b33571d523228b2d16ff039a/detcore/src/syscalls/threads.rs#L67 https://github.com/facebookexperimental/hermit/blob/bd3153b4...