[ebuild  N    ] kde-base/kimono-4.7.0  USE="plasma -akonadi (-aqua) -debug (-kdeenablefinal) -semantic-desktop" 
[blocks B     ] kde-base/kdebindings-csharp:4 ("kde-base/kdebindings-csharp:4" is blocking kde-base/kimono-4.7.0)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

  (kde-base/kimono-4.7.0::gentoo, ebuild scheduled for merge) pulled in by
    =kde-base/kimono-4.7.0

  (kde-base/kdebindings-csharp-4.6.5::gentoo, installed) pulled in by
    >=kde-base/kdebindings-csharp-4.6.5:4[-aqua] required by (kde-base/kdebindings-meta-4.6.5::gentoo, installed)