{
  kicad,
  kikit,
  zip,

  runCommand,

  nix-filter,
  lib,

  src,
  pcb_path,
  sch_path,

  boardName ? (lib.removeSuffix ".kicad_pcb" (builtins.baseNameOf pcb_path)),

  fabHouse ? "jlcpcb",
  withAssembly ? true,
}: let
  sharePath = "share/npry/clef/fab";

  fabSrc = nix-filter {
    root = src;

    include = [
      (nix-filter.matchExt "kicad_sch")
      (nix-filter.matchExt "kicad_wks")
      (nix-filter.matchExt "kicad_pcb")
      (nix-filter.matchExt "kicad_pro")

      (_args: path: type: type == "directory")
    ];
  };

in runCommand "${boardName}.fab" {
  nativeBuildInputs = [
    kicad
    kikit
    zip
  ];

  src = fabSrc;

  allowedRequisites = [];
} ''
  set -e

  export HOME=$(mktemp -d)

  echo "board: '${boardName}'" >&2

  mkdir -p "$out/${sharePath}"
  cd "$src"

  kikit fab ${fabHouse} \
    ${if withAssembly then "--assembly" else ""} \
    --no-drc \
    --schematic "${sch_path}" \
    --field 'LCSC Part #,LCSC Part No' \
    --missingError \
    "${pcb_path}" \
    "$out/${sharePath}"

  cd "$out/${sharePath}"
  rm -vf "gerbers.zip"

  pushd gerber

  # normalize
  for f in ${boardName}-*; do
    mv -nv "$f" "''${f#${boardName}-}"
  done

  for f in ${boardName}.*; do
    mv -nv "$f" "board''${f#${boardName}}"
  done

  popd

  zip -vj "gerbers.zip" gerber/*
  rm -vrf gerber
''