Debugging
Sometimes you may want to debug the flake. One easy way to do this is to enter the Nix REPL. From there you can load the flake using :lf, and start debugging with nix-select.
nix-repl> :lf
nix-repl> select = (builtins.getFlake "github:clan-lol/select").lib.select
nix-repl> select "*.config.boot.swraid.enable" nixosConfigurations