emerge -va inkscape

These are the packages that would be merged, in order:

Calculating dependencies... done!
!!! Error: circular dependencies:

ebuild / dev-python/pygtk-2.8.6 merge depends on
   ebuild / dev-python/pycairo-1.0.2 merge (hard)
ebuild / dev-python/pycairo-1.0.2 merge depends on
   ebuild / dev-python/pygtk-2.8.6 merge (hard)
ebuild / media-gfx/inkscape-0.44 merge depends on
   ebuild / app-office/dia-0.95.1 merge (hard)
ebuild / app-office/dia-0.95.1 merge depends on
   ebuild / dev-python/pygtk-2.8.6 merge (hard)