[NTG-context] getnonfreefonts with LMTX

Hi! The LMTX distribution comes with few binaries, texlua being none of them. The getnonfreefonts https://www.tug.org/fonts/getnonfreefonts/ script seems simple enough, but it relies on a global “kpse” which it uses to get kpse variables. Therefore luametatex --luaonly can’t execute it. Is there a way to get those fonts with the standalone LMTX distribution? Best, Phil