nixos-system-config/flake.nix

{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

    nur.url = "github:nix-community/NUR";
    impermanence.url = "github:nix-community/impermanence";

    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { nixpkgs, impermanence, home-manager, nur, ... } @ inputs:
    let
      lib = nixpkgs.lib.extend (final: prev: 
        import ./lib { lib = final; }
      );
    in
    {
      nixosConfigurations = lib.mkHosts {
        modules = [
          home-manager.nixosModules.home-manager {
            home-manager.sharedModules = [ 
              nur.hmModules.nur
            ];
          }
          impermanence.nixosModules.impermanence
          nur.nixosModules.nur
        ];
        nixpkgs = nixpkgs;
        inputs = inputs;
      };
    };
}