Why F#?

I'm completely convinced that F# (along with Scala, Haskell, and OCaml) adoption has stalled due to having ridiculously bad build systems. More significantly, they are being passed up in favor of Rust, which is a great language but nonetheless a bad fit for a lot of problem domains, simply because Rust has a superior build system. Hell, 80% of the reason I choose Rust over C++ for embedded work is because of the build system.

It baffles me that there are languages with non-profit foundations and are financially backed by multiple corporations which still have bad build systems. It is the most important investment you can make into a programming language.

While I've never used it in anger, I really quite like dune. Was there something specific that makes you characterise it as "ridiculously bad"?

Not Dune exactly, but having to run 'eval $(opam env)' in the terminal every time you open an OCaml project rather than the default being npm-like, where you can just open the directory and use the package manager command without having to think about it.