Unison is such a nice language and runtime in my opinion (if you're into pure functional languages in the ML family, anyway). The codebase manager with content-addressable code is a cool innovation. This seems like one of those languages that, once mature, would be very hard to give up once you got used to using it. I should give a disclaimer that I met and worked a bit with one of the creators of Unison in graduate school many years ago.
The Unison Cloud platform, which lets you run code on a managed cloud with nearly zero configuration and very little fanfare in the code itself, is in public beta. The link above has the details and a video about it. Worth a look if you're into that sort of thing.