I’ve published the next version of https://leanpub.com/outsidefp.
Relevant here is that I put the Elm -> PureScript chapter in the free sample. It aims to answer the question: “I do X in Elm; what’s the equivalent in PureScript?"
If you’re interested in trying out PureScript, I hope this helps. (I had hours and hours of trouble getting something like the Elm repl/compiling workflow working in PureScript.)