When I left my last Haskell job, my employer put out ads to the Haskell community and quickly got a pool of 5-10 solid applications. A good number of those were from people outside the U.S. which was a no-go for them. After waiting a few weeks they decided to open it up and not require Haskell experience. I looked through a number of these resumes and there was a massive drop in quality. It was like night and day. None of those applicants were even remotely interesting IMO. They ended up waiting a few more months and finally found a Haskell applicant in the U.S. that they were happy with. If you're willing to accept people working remotely your chances of finding someone are much better.