\documentclass{standalone}
\usepackage{luamplib}
\begin{document}
\mplibtextextlabel{enable}
\begin{mplibcode}
input tiling-arch-snub-hex-parts
beginfig(1);
  draw unit0 shifted 50 left;
  draw unit2 shifted 50 right;
endfig;
\end{mplibcode}
\end{document}