{ stdenv, undmg }:

{ pname, version, src, meta }:
stdenv.mkDerivation {
  inherit pname version src meta;

  nativeBuildInputs = [ undmg ];

  sourceRoot = ".";

  installPhase = ''
    mkdir -p $out/Applications $out/bin

    # Install Qt applications.
    for f in p4admin.app p4merge.app p4v.app; do
      mv $f $out/Applications
    done

    # Install p4vc separately (it's a tiny shell script).
    mv p4vc $out/bin
    substituteInPlace $out/bin/p4vc \
      --replace /Applications $out/Applications
  '';
}