mftrace: use new tex package structure

  # experimental texlive.combine support

  # (note that only the bin/ folder will be combined into texlive)

  passthru = {

    tlType = "bin";

    tlDeps = with texlive; [ kpathsea t1utils metafont ];

    pkgs = [ finalAttrs.finalPackage ];

  };

  passthru.tlDeps = with texlive; [ kpathsea t1utils metafont ];

  meta = with lib; {

    description = "Scalable PostScript Fonts for MetaFont";