> start with the prebuilt binaries and then do `stack upgrade`

Thanks but in this case I could also download the newest binaries instantly. The point is that I don't want to be dependent on any binaries. Compilation from scratch doesn't work.

Btw Rust has the same problem - it also depends on binary upgrades. Nim (nim-lang.org) proves how easy self-hosting can be - which also means how easy porting to other platforms can be.