%! lualatex --shell-escape mal-mercatormap.tex
\documentclass{standalone}
\usepackage{mercatormap}
\mermapset{python=python3}
\mrcactivatescript
\begin{document}
\begin{tikzpicture}
\mrcmap[type=reference, latitude=49.14549, longitude=16.99913, flex reference scale=250000, source=topplusopen p250, target=wmsmap, tex width=0.9\linewidth, tex height=3cm]{mapa-bucovice}
\mrcdrawmap
\node[below, font=\bfseries\sffamily] at (mrcmap.south) {Bučovice, rodiště autora zprávy};
\end{tikzpicture}
%\mrcnewsupplysource{mapycz}{
%  url={https://en.mapy.cz/zakladni?x={x}&y={y}&z={z}},
%  attribution={mapycz},
%  attribution print={mapycz},
%  basename=tiles/mapycz}
\end{document}