net-print/cups-1.3.11-r1 creates a circular dependency with the USE flags +cups and +cairo. Cups requires poppler. Poppler with USE="cairo" will depend on GTK+. GTK+ with USE="cups" will require cups, which we are trying to install.
Steps to Reproduce:
1.have cups and cairo USE flags set
2.emerge cups or anything that depends on cups
cups emerges without any blocks
*** This bug has been marked as a duplicate of bug 175808 ***