There used to be a packaged in octave forge for this but it was 'moved to another repo'...
Lost my original message, so I'll make it brief:
date: Tue Jun 18 19:27:03 2013 +0000
summary: fixed: moved to a separate mercurial repo
this is from this mercurial repository that hosts the code:https://hg.octave.org/forge
I'll try to find where it was moved to later, otherwise failing that I can try to checkout the code as it was at 18 Jun 2018 and send you instructions.