{
  inputs = {
    nixpkgs.follows = "nixpkgs-stable";
    nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-24.05";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";

    get-flake.url = "github:ursi/get-flake";

    disko.inputs.nixpkgs.follows = "nixpkgs";

    home-manager = {
      # url = "github:nix-community/home-manager/master";
      url = "github:nix-community/home-manager/release-24.05";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nixos-x13s.url =
      "git+https://forgejo.www.stefanjunker.de/steveej/nixos-x13s.git?ref=bump"
      # 6.11.0
      # "git+https://forgejo.www.stefanjunker.de/steveej/nixos-x13s.git?branch=remaintain&rev=6b9efe77ca80653354981c720af3c4241ac71490"
      # 6.12.0-rc6
      # "git+https://forgejo.www.stefanjunker.de/steveej/nixos-x13s.git?branch=remaintain&rev=bd580ee9c35fcb8a720122d5bb2f903f1b7395ee"
      # "git+https://forgejo.www.stefanjunker.de/steveej/nixos-x13s.git?branch=remaintain&rev=1286d20be2321a1a2d27f5d09257ebaf54ce0630"
      #"/home/steveej/src/others/nixos-x13s"
      #
      ;

    # nixos-x13s.url = "git+https://codeberg.org/adamcstephens/nixos-x13s?ref=refs/tags/2024-02-28";
    # nixos-x13s.url = "path:/home/steveej/src/others/nixos-x13s";
    # nixos-x13s.inputs.nixpkgs.follows = "nixpkgs";

    mycelium.url = "github:threefoldtech/mycelium";
    mycelium.inputs.nixpkgs.follows = "nixpkgs";

    nix-snapshotter = {
      url = "github:yu-re-ka/nix-snapshotter";
      # url = "github:pdtpartners/nix-snapshotter";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = {
    self,
    get-flake,
    nixpkgs,
    ...
  }: let
    nativeSystem = "aarch64-linux";
    nodeName = "steveej-x13s";

    repoFlake = get-flake ../../../..;

    mkNixosConfiguration = {extraModules ? [], ...} @ attrs:
      nixpkgs.lib.nixosSystem (
        nixpkgs.lib.attrsets.recursiveUpdate
        attrs
        {
          specialArgs =
            (import ./default.nix {
              system = nativeSystem;
              inherit nodeName;

              inherit repoFlake;
              repoFlakeWithSystem = repoFlake.lib.withSystem;
              nodeFlake = self;
            })
            .meta
            .nodeSpecialArgs
            .${nodeName};

          modules =
            [
              ./configuration.nix

              # flake registry
              {
                nix.registry.nixpkgs.flake = nixpkgs;
              }
            ]
            ++ extraModules;
        }
      );
  in {
    lib = {
      inherit mkNixosConfiguration;
    };

    overlays.libcamera = final: previous: let
      webkitgtkPreConfigure = ''
        export NIX_BUILD_CORES="$((NIX_BUILD_CORES > 2 ? 2 : NIX_BUILD_CORES))"
        export NUMBER_OF_PROCESSORS="$NIX_BUILD_CORES"
      '';
    in {
      wireplumber = previous.wireplumber.overrideAttrs (_: {
        version = "git";
        src = previous.fetchFromGitLab {
          domain = "gitlab.freedesktop.org";
          owner = "pipewire";
          repo = "wireplumber";
          rev = "71f868233792f10848644319dbdc97a4f147d554";
          hash = "sha256-VX3OFsBK9AbISm/XTx8p05ak+z/VcKXfUXhB9aI9ev8=";
        };
      });

      libcamera = previous.libcamera.overrideAttrs (_: {
        postFixup = ''
          ../src/ipa/ipa-sign-install.sh src/ipa-priv-key.pem $out/lib/libcamera/ipa_*.so
        '';
      });

      libcamera-qcam = previous.libcamera-qcam.overrideAttrs (_: {
        postFixup = ''
          ../src/ipa/ipa-sign-install.sh src/ipa-priv-key.pem $out/lib/libcamera/ipa_*.so
        '';
      });

      webkitgtk = previous.webkitgtk.overrideAttrs (attrs: {
        preConfigure =
          attrs.preConfigure + webkitgtkPreConfigure;
      });

      webkitgtk_4_1 = previous.webkitgtk_4_1.overrideAttrs (attrs: {
        preConfigure =
          attrs.preConfigure + webkitgtkPreConfigure;
      });

      webkitgtk_6_0 = previous.webkitgtk_6_0.overrideAttrs (attrs: {
        preConfigure =
          attrs.preConfigure + webkitgtkPreConfigure;
      });
    };

    overlays.default = final: previous: let
      inherit (previous.stdenv) system;
      pkgsUnstable = import self.inputs.nixpkgs-unstable.outPath {
        inherit system;
        overlays = [self.overlays.libcamera];
      };
    in {
      inherit pkgsUnstable;
      inherit
        (pkgsUnstable)
        libcamera
        webkitgtk
        webkitgtk_4_1
        webkitgtk_6_0
        ;
    };

    nixosConfigurations = {
      native = mkNixosConfiguration {
        system = nativeSystem;
      };

      cross = mkNixosConfiguration {
        extraModules = [
          {
            nixpkgs.buildPlatform.system = "x86_64-linux";
            nixpkgs.hostPlatform.system = nativeSystem;
          }
        ];
      };
    };
  };
}