I'm yearning for the Golang of functional programming. That is, excellent std lib, clear documentation, awesome tooling, active community.. and after typing this, maybe that's Elixir? Though I do love static typing.
They have an active community that is very engaged in improving the entire developer experience. Plus ReasonML is just OCaml under the (new syntax) hood so you have decades of OCaml expertise and libraries to draw on. In case that's not enough, it also deploys to JavaScript and targets the npm ecosystem, so you also have the entire npm package collection at your disposal.
It should maybe come bundled with mix, as some other tools, that way it'll be more approachable.
Also there's a wrapper for it, which helps in the process.[0]