flake.nix

{
  inputs.nixpkgs.url = "nixpkgs/nixos-20.09";

  inputs.home-manager = {
    url = "github:nix-community/home-manager/release-20.09";
    inputs.nixpkgs.follows = "nixpkgs";
  };

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

  outputs = { self, nixpkgs, home-manager, nur }: {

    nixosConfigurations.thinkpad = nixpkgs.lib.nixosSystem {
      modules =
        [
          (
            { ... }: {
              system.configurationRevision = nixpkgs.lib.mkIf (self ? rev) self.rev;

              nix.registry.nixpkgs.flake = nixpkgs;

              nixpkgs.overlays = [
                nur.overlay
              ];
            }
          )

          home-manager.nixosModules.home-manager

          nixpkgs.nixosModules.notDetected

          ./machines/thinkpad/configuration.nix
        ];

      system = "x86_64-linux";
    };
  };
}