Will attach patch.
Created attachment 77770 [details, diff] plib-modularx.patch
Created attachment 77772 [details, diff] plib-modularx.patch
The deps look wrong to me. It still needs virtual/opengl, x11-libs/libX11 and x11-libs/libXt in RDEPEND
I did the dependences for both major versions from scratch using spyderous' scripts. It would probably be best if someone reviewed the changes.