Julia does have some really nice libraries, but I think their tooling is actually very hit and miss. Partly this comes from it being much harder to distribute CLI programs and partly due to the pre-compilation overhead, meaning that most tools expect you to work solely from the repl making them much harder to integrate into other workflows.
I also found it very frustrating that type-checking is only done at runtime, with no tools able to do this statically. My (limited) understanding is that this is language-level issue.