{
  description = "NixOS configuration with flakes";

  # To update all inputs:
  # $ nix flake update --recreate-lock-file
  inputs = {
    disko.url = "github:nix-community/disko";
    disko.inputs.nixpkgs.follows = "nixpkgs";

    flake-parts.url = "github:hercules-ci/flake-parts";
    flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";

    nixpkgs.url = "github:NixOS/nixpkgs/release-23.05";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

    nixos-hardware.url = "github:NixOS/nixos-hardware";
    nur.url = "github:nix-community/NUR";

    home-manager.url = "github:rycee/home-manager/release-23.05";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";

    agenix.url = "github:ryantm/agenix";
    agenix.inputs.nixpkgs.follows = "nixpkgs";

    colmena.url = "github:zhaofengli/colmena";
    colmena.inputs.nixpkgs.follows = "nixpkgs";

    attic.url = "github:zhaofengli/attic";

    srvos.url = "github:numtide/srvos";
    # actually not used when using the modules but than nothing ever will try to fetch this nixpkgs variant
    srvos.inputs.nixpkgs.follows = "nixpkgs";

    # Ryan's experimental hypervisor based on cloud-hypervisor
    # Private repository, you need a valid SSH key to access it
    nixos-hypervisor.url = "git+ssh://gitea@git.newtype.fr/newtype/nixos-hypervisor?ref=main";
    nixos-hypervisor.inputs.nixpkgs.follows = "nixpkgs";

    flake-registry.url = "github:NixOS/flake-registry";
    flake-registry.flake = false;
  };

  outputs =
    { flake-parts
    , ...
    } @ inputs:
    (flake-parts.lib.evalFlakeModule
      { inherit inputs; }
      ({ self, inputs, ... }: {
        systems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" ];
        imports = [
          ./configurations.nix
          # ./modules/monitoring/flake-module.nix
          # ./pkgs/flake-module.nix
          # ./templates
        ];
        perSystem = { self', pkgs, ... }: {
          devShells.default = pkgs.mkShellNoCC {
            buildInputs = [
              pkgs.ipmitool
              pkgs.colmena

              pkgs.python3.pkgs.invoke
              #Until nixos-anywhere is packaged
              pkgs.python3.pkgs.deploykit
              pkgs.mypy
              pkgs.pixiecore
              pkgs.dnsmasq
              pkgs.python3.pkgs.netaddr
              pkgs.qemu_kvm
              pkgs.openssh
              pkgs.gitMinimal # for git flakes
              pkgs.rsync
              pkgs.nix
              pkgs.coreutils
              pkgs.curl # when uploading tarballs
              pkgs.gnugrep
              pkgs.findutils
              pkgs.gnused # needed by ssh-copy-id
              # sops dependencies
              pkgs.age
              pkgs.yq-go
            ] ++ pkgs.lib.optional (pkgs.stdenv.isLinux) pkgs.mkpasswd;
          };
          packages = {
            #  netboot = pkgs.callPackage ./modules/netboot/netboot.nix {
            #    # this nixosSystem is built for x86_64 machines regardless of the host machine
            #    pkgs = inputs.nixpkgs.legacyPackages.x86_64-linux;
            #    inherit (inputs.nixpkgs.lib) nixosSystem;
            #    extraModules = [
            #      self.inputs.nur.nixosModules.nur
            #      { _module.args.inputs = self.inputs; }
            #    ];
            #  };

            #  netboot-pixie-core = pkgs.callPackage ./modules/netboot/netboot-pixie-core.nix {
            #    inherit (self'.packages) netboot;
            #  };
          };
        };
        flake = {
          hydraJobs = inputs.nixpkgs.lib.mapAttrs' (name: config: inputs.nixpkgs.lib.nameValuePair "nixos-${name}" config.config.system.build.toplevel) self.nixosConfigurations // {
            devShells = self.devShells.x86_64-linux.default;
          };
        };
      })).config.flake;

}