With USE=doc, gnome-desktop-3.0.0 and 2.32.1 collide due to trying to install their license documentation files in the same location. USE="doc" emerge gnome-desktop:3 [...] >>> Installing (6 of 13) gnome-base/gnome-desktop-3.0.0 * checking 46 files for package collisions * This package will overwrite one or more files that may belong to other * packages (see list below). You can use a command such as `portageq * owners / <filename>` to identify the installed package that owns a * file. If portageq reports that only one package owns a file then do * NOT file a bug report. A bug report is only useful if it identifies at * least two or more packages that are known to install the same file(s). * If a collision occurs and you can not explain where the file came from * then you should simply ignore the collision since there is not enough * information to determine if a real problem exists. Please do NOT file * a bug report at http://bugs.gentoo.org unless you report exactly which * two packages install the same file(s). Once again, please do NOT file * a bug report unless you have completely understood the above message. * * Detected file collision(s): * * /usr/share/gnome/help/lgpl/C/lgpl.xml * /usr/share/gnome/help/fdl/C/fdl.xml * /usr/share/gnome/help/gpl/C/gpl.xml * /usr/share/omf/lgpl/lgpl-C.omf * /usr/share/omf/fdl/fdl-C.omf * /usr/share/omf/gpl/gpl-C.omf * * Searching all installed packages for file collisions... * * Press Ctrl-C to Stop * * gnome-base/gnome-desktop-2.32.1 * /usr/share/gnome/help/fdl/C/fdl.xml * /usr/share/gnome/help/gpl/C/gpl.xml * /usr/share/gnome/help/lgpl/C/lgpl.xml * /usr/share/omf/fdl/fdl-C.omf * /usr/share/omf/gpl/gpl-C.omf * /usr/share/omf/lgpl/lgpl-C.omf * * Package 'gnome-base/gnome-desktop-3.0.0' NOT merged due to file * collisions. If necessary, refer to your elog messages for the whole * content of the above message.
Created attachment 268813 [details, diff] adds blocking dependency It is ok. USE="-doc" resolves the conflict between vers 2 and 3 (since 2.32.1 and 3.0.0) But there was no block in ebuild. Here is a simple patch to add blocking
This was fixed quite some time ago.
