Even though they did, it's still interesting to see someone else's implementation.
Creating something yourself, even if there is something else similar out there, isn't a bad thing!
Better coding and sharing with the world, than sitting on the sidelines saying "didn't someone else do this" :-)
Currently, i use ikiwiki, because it comes with many plugins.
It seems it dropped the dependency on django and is using jinja2 now.
The only drawback I've found so far is the inability of ReST to reference sections in other document files.