Hello, I'm the current maintainer of the scirenderer package. Please, delete it.
I changed PKGBUILD to get source code from the new location, but it is severely outdated. The library is not abandoned, but is developed as a part of Scilab project.
It seems to me, that no other program or Arch user uses this library, judging by the fact that nobody flagged this package out-of-date, when the jogl package (a dependency) became incompatible with it.
Also, light googling didn't show any dependent programs. Regards, Victor