# emerge -pvDNu world

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

Calculating dependencies... done!


[nomerge ] media-gfx/gimp-2.6.4 USE="debug* doc*"
[nomerge ] dev-python/pygtk-2.14.1-r1 USE="doc*"
[nomerge ] dev-python/pycairo-1.8.8 USE="doc*"
[nomerge ] dev-python/sphinx-0.6.1-r1 USE="doc -test"
[ebuild N ] dev-python/jinja2-2.1.1 USE="doc -examples -i18n -test"
[ebuild N ] dev-python/sphinx-0.6.1-r1 USE="doc -test"

* Error: circular dependencies:

('ebuild', '/', 'dev-python/sphinx-0.6.1-r1', 'merge') depends on
('ebuild', '/', 'dev-python/jinja2-2.1.1', 'merge') (buildtime)
('ebuild', '/', 'dev-python/jinja2-2.1.1', 'merge') depends on
('ebuild', '/', 'dev-python/sphinx-0.6.1-r1', 'merge') (buildtime)

* Note that circular dependencies can often be avoided by temporarily
* disabling USE flags that trigger optional dependencies.