Unless you substantiate it, this is not a constructive response.
(To take a stab at a useful answer: Being able to perfectly reproduce a system is actually quite helpful when changing things, because the easier it is to roll back the safer it is to roll forward.)
It would be helpful, if it were possible. But an operating system consists of thousands of independently changeable components, any of which can stop being available at any time. You'd have to vendor all your dependencies for your builds to truly be reproducible.
The Arch system is flexible and is designed to account for this. It offers something better than reproducibility imo.
> But an operating system consists of thousands of independently changeable components, any of which can stop being available at any time. You'd have to vendor all your dependencies for your builds to truly be reproducible.
Unless you substantiate it, this is not a constructive response.
(To take a stab at a useful answer: Being able to perfectly reproduce a system is actually quite helpful when changing things, because the easier it is to roll back the safer it is to roll forward.)