dev-libs/gir-repository-0.6.5 depends on virtual/poppler-glib, which was recently removed from portage, instead of app-text/poppler[...] (... = cairo?). Reproducible: Always
Fixed in overlay. Thanks for reporting.
(In reply to comment #1) > Fixed in overlay. Thanks for reporting. > Hm, you replaced it with poppler[glib] which won't work for poppler-0.12.3-r3/5 (the only versions in the main tree). The glib USE flag was dropped for these poppler versions.