Cómo eliminar el set de portage

Estaba lidiando con muchos bloques de Qt5.

[blocks B ] <dev-qt/qtgui-4.8.6:4 ("<dev-qt/qtgui-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtsql-4.8.6:4 ("<dev-qt/qtsql-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtcore-4.8.6:4 ("<dev-qt/qtcore-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtopengl-4.8.6:4 ("<dev-qt/qtopengl-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qt3support-4.8.6:4 ("<dev-qt/qt3support-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtscript-4.8.6:4 ("<dev-qt/qtscript-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qttest-4.8.6:4 ("<dev-qt/qttest-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtphonon-4.8.6:4 ("<dev-qt/qtphonon-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtxmlpatterns-4.8.6:4 ("<dev-qt/qtxmlpatterns-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtwebkit-4.8.6:4 ("<dev-qt/qtwebkit-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtdbus-4.8.6:4 ("<dev-qt/qtdbus-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) [blocks B ] <dev-qt/qtsvg-4.8.6:4 ("<dev-qt/qtsvg-4.8.6:4" is blocking dev-qt/qtchooser-0_p20150102) (dev-qt/qtchooser-0_p20150102:0/0::gentoo, ebuild scheduled for merge) pulled in by dev-qt/qtchooser requinetworking by (dev-qt/qtpositioning-5.4.0:5/5::gentoo, ebuild scheduled for merge) dev-qt/qtchooser requinetworking by (dev-qt/qtgraphicaleffects-5.4.0:5/5::gentoo, ebuild scheduled for merge) dev-qt/qtchooser requinetworking by (dev-qt/qtcore-5.4.0:5/5::gentoo, ebuild scheduled for merge) ... 

Pero no tenía qt5 instalado (probablemente eliminado uno por uno, intentaba resolverlo hace algún time):

 # equery list qt*-5* * Searching for qt*-5* ... !!! No installed packages matching 'qt*-5*' 

Incluso he agregado -qt5 para -qt5 banderas.

Recuerdo que utilicé algunos sets qt5 a través de emerge --ask @qt5-essentials @qt5-addons y los sets de listdos lo confirmaban.

 # emerge --list-sets ... qt5-addons qt5-essentials qt5-tools 

pero no puedo encontrar la manera de deshacerme de ellos, no surgen opciones. Y el directory de sets personalizados no existe:

 # ls /etc/portage/sets/ ls: cannot access /etc/portage/sets/: No such file or directory