Elm was my first choice for a different side project. I went away because then elm did not have, or it was my lack of knowledge,support for crud widgets. I miss the elm signal approach in haxe for one thing. Here is the link to my repo so things are a bit concrete https://github.com/asm-products/ccar-websockets.git . Warning: this is still work in progress and there are way too many issues before I can even release this. The elm repo is here: https://github.com/dservgun/elm_projects .

Edit: added some repos to set a context. The original comment about 4th attempt hit home as the latest repo is my 4th(I am going to quickly lose count) attempt to achieve at a model that might work/scale. There are still some issues that I would like to solve: whether to use code generators or not. Code gens will save me some typing, but I found myself tweaking printfs or equivalents to fit it into a narrow model.

Edit II: Elm, iirc, is being supported by prezi that also happens to be using haxe quite actively. So I felt a bit more reassured about using haxe.