The diagrams.net developers have publicly stated that there are
no plans to support encapsulated postscript as an output type.
For users of text formatting packages such as {X}fm and LaTex,
the ability to easily include draawings depends on having those
drawings in encapsulated postscript (eps) format, and thus
renders it impossible to use their tool to generate diagrams
which are useful.
This repository contains a library which supports the conversion
of an XML file generated by diagrams.net (uncompressed) into
postscript. The repo also contains a command line tool (dgmx_conv)
which uses the library to generated complete postscript or
encapsulated postscript output from these XML files. Currently
only a subset of the possible drawing "things" are supported, but
these should be enough for basic drawing support.