I have installed gnat-gcc-4.2.0 gtkada-2.4.0-r2 wants to merge virtual/gnat-4.1 and dev-lang/gnat-gcc-4.1.2 in new slot. Of course, after installing gnat-gpl-4.1.3.2007 gtkada also wants gnat-gcc :) Reproducible: Always Steps to Reproduce:
Ok, the title of the bug does not reflect the actual problem you describe inside ;). However both are valid and are fixed as of now. Thanks for reminding to update virtuals :). George