{ final, prev, ... }:
{
  postsrsd = prev.postsrsd.overrideAttrs (oldAttrs: {
    cmakeFlags = (oldAttrs.cmakeFlags or []) ++ [
      "-DWITH_MILTER=ON"
    ];
    buildInputs = (oldAttrs.buildInputs or []) ++ [
      final.libmilter
    ];
  });
}