I’m not a cheerleader for APE or cosmopolitan libc either, and I don’t know if I’m a fan of the other technologies mentioned either, but the construction of APE/cosmopolitan is impressive from a technical standpoint. What I will say is that for C programming it would be nice not to have to jump through a load of hoops to add source compatibility for windows and then work with a separate toolchain like cygwin or something on top of that. I am not sure if I would actually trust this setup in a production environment though.