Hint if you experience problems using #TikZ / #PGF with #ConTeXt:

Try loading the tikz module before pgf modules, otherwise ”loaders“ aren’t in place:

\usemodule[tikz]
\usemodule[pgfplots]

Tonight’s update for #ConTeXt #LMTX should fix problems with #PGF/#TikZ.

While #MetaPost (#MetaFun) is the graphics language of choice in ConTeXt, TikZ should generally work. But some modules like pgfplots needed new loaders due to the low level changes in #LuaMetaTeX.

The code was in #Hy, the plots, diagrams and flowcharts (there were several) were written in #PGF/#TikZ.