[NTG-context] MetaPost dirtree?

Hi, did someone already create directory trees with MetaPost? It should be quite easy, but I couldn’t find examples and was thinking about porting the LaTeX dirtree package (i.e. look at the code and try to implement something similar in Lua and MP). I have ideas… (but I have always too many of them). So far, I used the output of `tree`, and that’s not really beautiful. Hraban