This package fails to build in mock. build.log is attached.
Created attachment 129567 [details] Matt Domsch's buildlog
"configure: WARNING: *** X11 not found! Omitting X11 layer." I guess is the problem, though there is a BuildRequires: libX11-devel
I'd say this is ok now, I see that agg passes the most recent mock builds. This was probably related to the blinking in and out of existance of libX11 in rawhide