A distributed lock manager for OpenStack?

If the features of ZooKeeper match the requirements, but the required runtime is a problem, then why not

(a) precompile the bytecode to native code (eg via gcj), or
(b) start a project to port ZooKeeper to another language (eg rust) which compiles to native code?

ZooKeeper is a reasonably stable project now, and isn't huge. A direct 1:1 reimplementation seems feasable..