{
  pkgs,

  src,
  main_pcb,
  main_sch,

  name,
  outPath ? "share/npry/clef",
  layers ? 2,
}: let
  pcb_path = main_pcb;
  sch_path = main_sch;

  pcb_args = {
    inherit pcb_path src;
  };

  panelSrc = pkgs.callPackage ./panel.nix pcb_args;
  panel = pkgs.callPackage ./. {
    src = "${panelSrc}/share/npry/clef/panel";
    main_pcb = "panel.kicad_pcb";

    name = "${name}.sub.panel";
    outPath = "${outPath}/panel";

    inherit main_sch layers;
  };

  svg = pkgs.callPackage ./svg.nix (pcb_args // { nLayer = layers; });
  model = pkgs.callPackage ./model.nix pcb_args;

  fabrication = pkgs.callPackage ./fabrication.nix (pcb_args // {
    inherit sch_path;
  });

  schematic = pkgs.callPackage ./schematic.nix {
    inherit sch_path src;
  };

in pkgs.callPackage ./board.nix {
  inherit
    svg
    model
    fabrication
    schematic
    name
    outPath
    panel
    panelSrc
  ;
}