emerge -uv world
Calculating world dependencies \

!!! An atom in the dependencies is not fully-qualified. Multiple matches:

    n
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    d

    m
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    t
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    1

    v
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    t
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!!! This ebuild cannot be installed: '/usr/portage/kde-misc/katapult/katapult-0.3.1.4.ebuild'
!!! Please notify the package maintainer that atoms must be fully-qualified.


!!! Problem resolving dependencies for kde-misc/katapult
!!! Depgraph creation failed.