From prior experiences, such as using Python from 1999 through 2005 and Common Lisp between 2005 through 2012, you have an advantage when recruiting for a language considered "exotic" by standards of the given day.

At two different startups circa 2007 and early 2008, we received many, many very high quality candidates with a one sentence description posted to the right place (e.g., planet.lisp.org) saying, "Use Common Lisp in Seattle."

I've had comparable experience with that approach for Rust in Vancouver, BC last year when looking for devs that were merely "familiar" with the language, even if no professional work experience with Rust but "Ideal Candidates" having "Rust, Go, C++, C, Python or Lisp family of languages". That was posted via this-week-in-rust.org.

That one was posted with relatively poor posted salary, yet we still saw high quality candidates for the senior level role. The intermediate level dev that was ultimately hired apparently worked very well for the company after I left.