This is mostly a reminder and tracker bug for me, the package maintainer. I committed a package to tree with a known issue. When the rups USE flag is set, compile will fail. It's looking for some non-existent com.sun.PDF classes or similar. Along with some other deps that likely need to be added to classpath for compilation of the rups stuff.
Created attachment 152521 [details] build.log
Reassigning to herd since wltjr has left Gentoo, bug #135927.
Fixed in 2.1.5 (added pdf-renderer to tree).