I have recently installed a fresh Sabayon 7 + KDE distribution. Now I am installing some software using portage. I have typed "emerge thunderbird", however the installation failed because of conflict. What I see is, that installing the package "pinentry" from portage would overwrite some files from package "pinentry-base" that is managed by entropy. How can I resolve this conflict? Here is the error message:

* Messages for package app-crypt/pinentry-0.8.1:

 * 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/info/pinentry.info.bz2
 *      /usr/bin/pinentry-qt4
 *      /usr/bin/pinentry-curses
 * Searching all installed packages for file collisions...
 * Press Ctrl-C to Stop
 * app-crypt/pinentry-qt4-0.8.1-r1
 *      /usr/bin/pinentry-qt4
 * app-crypt/pinentry-base-0.8.1
 *      /usr/bin/pinentry-curses
 *      /usr/share/info/pinentry.info.bz2
 * Package 'app-crypt/pinentry-0.8.1' NOT merged due to file collisions.
 * If necessary, refer to your elog messages for the whole content of the
 * above message.

and the command portageq owners / /usr/share/info/pinentry.info.bz2 says:


Mixing portage with entropy leads to problems. They are a bit different methods of managing your system packages and unfortunately do not always cooperate nicely. I had similar problems some time ago and finally ended up turning my Sabayon entirely into Gentoo, which I had already felt comfortable with. If you really want to go on mixing entropy with portage, the Sabayon wiki might be helpful to you.

In this particular case, the best solution would be to first remove app-crypt/pinentry-qt4 and app-crypt/pinentry-base (via entropy) and then retry emerging thunderbird.

In other cases, especially when there are no file owners found, you might use the COLLISION_IGNORE variable to force emerging of a package despite collisions. But do so with extreme caution, as you may break your system, overwriting things that other packages depend on. The variable needs to indicate, what part of system directory tree should be unprotected, so in your case it would be enough to run COLLISION_IGNORE="/usr" emerge -1 app-crypt/pinentry (the -1 is there to prevent pinentry from landing in your world file.

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