Thank you. I completely agree and I'm not going to back out (nor switch technology at this). I hope that one day I will be able to open-source some of the work

Thank you. I completely agree and I'm not going to back out (nor switch technology at this). I hope that one day I will be able to open-source some of the work and help others who struggle. In the meantime I'm looking forward to deps compilation time speedup and documentation tooling (not to mention 1.19). My own experiment of parallel isolated builds showed speedup comparable to the one you mentioned, but I dislike hacks so I'd rather wait for peer reviewed version :)