Version 1.4.8
official tarball
README.txt has
  The *.txt files in the "doc" directory are written in 
reStructedText. If
  you have rst2html installed (part of the docutils suite) you can 
convert
  these to HTML by running "make html" in the "doc" directory.

There is no makefile in "doc".
   python setup.py build_doc
is not mentioned, which needs
        roundup/dist/command/build_doc.py
                sphinx = find_executable('sphinx-build')

Which is an (optional?) prerequisite which should be mentioned
in installation.txt I guess.