A-ha! pstopdf is a Ruby thing, which I don't install because I use Lua only )) Does anyone dare to rewrite the script in Lua? Or maybe there is another way to get PDF (for instance, Lily can produce pdfs directly, isn't it?)

pstopdf is part of the ConTeXt distribution and should give you something like:

hraban$ pstopdf PsToPdf | version 2.0.1 - 2002-2006 - PRAGMA ADE/POD

PsToPdf | --convert convert ps into pdf PsToPdf | --request handles exa request file PsToPdf | --watch watch folders for conversions (untested)

I don't see any eps files created. Best, Vyatcheslav