Functional package management


I read recently that redox is looking into the nix package manager, is there more info on this?
Is there any indication if guix integration is in the works also. Guix seems to have a lot of promise and it’s hpc branch for reproducible science is really interesting to me, like the guix-jupyter idea they’re experimenting with.
Or is redox planning its own pkg manager?
Finally do you have any comments on what they are doing beyond the package manager, in comparison to redox… with gnu mes, coreutils and the shell in scheme, and if they are complimentary in ways to redox, even at this early stages of their development.