{
  description = "NixOS definitions for our physical servers";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.05";
    deploy-rs.url = "github:serokell/deploy-rs";
  };

  outputs = { self, nixpkgs, deploy-rs, ... }:
    let system = "x86_64-linux";
    in {

      formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixfmt;

      nixosConfigurations.hypervisor = nixpkgs.lib.nixosSystem {
        inherit system;
        modules = [ ./configuration.nix ];
      };

      deploy = {
        sshUser = "root";
        user = "root";

        nodes.jefke = {
          hostname = "jefke.hyp";
          profiles.hypervisor = {
            path = deploy-rs.lib.x86_64-linux.activate.nixos
              self.nixosConfigurations.hypervisor;
          };
        };
      };

      checks = builtins.mapAttrs
        (system: deployLib: deployLib.deployChecks self.deploy) deploy-rs.lib;
    };
}