Guix is a declarative package manager for GNU/Linux (and other kernels like Hurd) that can be used as a stand-alone distribution too. It is similar to Nix, but as a main killing feature, its configuration is pure Guile.
According to (b9hummingbird 2024), Guix does not work on Android (yet).
Reference
b9hummingbird. 2024. “Is Running the `Guix` Package Manager on an Unrooted Termux Android Device Possible?” November 7, 2024. https://old.reddit.com/r/GUIX/comments/1glnr90/is_running_the_guix_package_manager_on_an/.