`nimble test` fails on OSX; Error: unhandled exception: No such file or directory [OSError]
- [ ] `nimble test` fails on OSX
error I get: same as https://github.com/dom96/jester/pull/161#issuecomment-415608482
also tried `nimble test` after `git submodule init`, didn't help
- [ ] `git submodule init` should be documented in README or automatically done in `nimble test`
