This place is a mess. Proceed at your own caution.

Initial configuration: nix.settings.experimental-features = [ "nix-command" "flakes" ];

Home Manager:

nix-channel --add https://github.com/nix-community/home-manager/archive/release-24.05.tar.gz home-manager
nix-channel --update
nix-shell '<home-manager>' -A install