{
  inputs.openwrt-imagebuilder.url =
    "github:IowaCityMesh/nix-openwrt-imagebuilder";

  outputs = { self, openwrt-imagebuilder }:
    let
      inherit (openwrt-imagebuilder.inputs) nixpkgs;
      inherit (nixpkgs) lib;
      sshAuthorizedKeys = [
        "ssh-rsa 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 emery@zuni"
      ];
    in {

      packages = lib.attrsets.mapAttrs (system: pkgs:
        let
          profiles = openwrt-imagebuilder.lib.profiles { inherit pkgs; };

          customConfig = {
            # add package to include in the image, ie. packages that you don't
            # want to install manually later
            packages = [ ];

            disabledServices = [ ]; # dnsmasq

            # include files in the images.
            # to set UCI configuration, create a uci-defauts scripts as per
            # official OpenWRT ImageBuilder recommendation.
            files = pkgs.runCommandNoCC "image-files" { } ''
              mkdir -p $out/etc/uci-defaults
              cat > $out/etc/uci-defaults/99-custom << EOF
              uci -q batch << EOI
              set system.@system[0].hostname='meshic-testrouter'
              set wireless.@wifi-iface[0].ssid='MeshIC'
              commit
              EOI
              EOF

              mkdir -p $out/etc/dropbear
              cat > $out/etc/dropbear/authorized_keys << EOF
              ${lib.strings.concatStringsSep "\n" sshAuthorizedKeys}
              EOF
            '';
          };
        in {

          trendnet_tew-691gr = openwrt-imagebuilder.lib.build
            (profiles.identifyProfile "trendnet_tew-691gr" // customConfig);

        }) { inherit (nixpkgs.legacyPackages) x86_64-linux; };

      hydraJobs = self.packages.x86_64-linux;
    };

}