Depending in how hard you want it, you can use pandoc (as described above) to convert to texinfo and then use the TeX package texi2roff to convert to troff. (Disclaimer: I haven't tried this and am unlikely to ever do so :-) )
Depending in how hard you want it, you can use pandoc (as described above) to convert to texinfo and then use the TeX package texi2roff to convert to troff. (Disclaimer: I haven't tried this and am unlikely to ever do so :-) )