[onetom]

I think Ansible is a little bit of an overkill for this purpose, but also, it's fundamentally a non-reproducible system-configuration-management tool, just like Emacs' built-in use-package system.

Straight.el carries over the idea of reproducible builds from the Nix package manager and applies it to the specifics of the Emacs ecosystem.

So the whole point is to get away from the reproducibility issues of Ansible, use-package and the likes.