Gant is a tool for scripting Ant tasks using Groovy instead of XML to
specify the logic. A Gant specification is a Groovy script and so can bring
all the power of Groovy to bear directly, something not possible with Ant
scripts. Whilst it might be seen as a competitor to Ant, Gant uses Ant tasks
for many of the actions, so Gant is really an alternative way of doing
things using Ant, but using a programming language rather than XML to
specify the rules.