Well, I found it found it hard to hire Clojure developers too. But I addressed it by hiring good to competent developers, asking if they are willing to learn Clojure and then getting them to implement a test project in Clojure as part of the interview process. Since Clojure is syntactically not huge, it is easy to pickup, for good developers. That's my hiring pipeline. ;)
A fairly high percentage. I guess filtering for candidates who are polyglot developers comfortable in more than one language helps. The fact that Clojure is used acts as a filter for self-driven and "better programmers" [1].
