Piranha is a little slice of history for me as it is the first project I wrote that used GLSL through the first nVidia beta drivers that supported it almost 6 years ago!
Back then I use to support a lot of IDE and compilers and even Linux... but after 6 years I don't use any of these softwares anymore. Moreover, the GLSL beta drivers were quite a wrapper on top of Cg and not conform at all.
Considering the emotional value I have for this project, I built a new Visual Studio 2008 project fixed few C++ and GLSL things and manage to have it running once more time. :)