A number of people have mentioned that it would be good to have a tool for converting Ant XML build files into Gant scripts.  Some time ago a start was made on such a script, and various people used it out of the Subversion repository.  No-one has made any mention of it recently, so maybe the need for it has gone away.  Certainly it is only a start at such a script and not really a production transformer.  It seems sensible to try and gauge whether there is any need for the script by making a release, thus:

Version 0.1.2 can be downloaded by clicking here.

If you have a go at using it, please feel free to give feedback and/or make bug reports and improvement requests via the Gant JIRA.