ImportError: No module named catkin.environment_cache · Issue ...
github.com › catkin › catkin_toolsMay 31, 2016 · This isn't the exact catkin.environment_cache import problem, but I wonder if it might actually be a better pointer to the root cause—looks like there's some provision for mutexing writes to the shared installspace, but I think the real issue is that locking only writes is insufficient— if a package is sourcing setup files at the moment where they're being recreated (as above), you'll get ...