BTW, just in case, not only the system configs are inmutable on Guix, the root/system directory is also read-only making it an inmutable distribution. So the argument that the Guix system is not inmutable is not correct. There are many places clearly stating that, but the itsfoss 12 inmutable linux distributions is one of them, and by its definition of inmutable:
An immutable distro ensures that the operating system's core remains unchanged. The root file system for an immutable distro remains read-only, making it possible to stay the same across multiple instances.
So @
[email protected], it actually is an unmutable distribution. But beyond that, it's much more than that.