In order to enable the graph features of app-office/openerp-client, the dev-python/matplotlib dependency needs to include the gtk USE flag CDEPEND="dev-python/matplotlib dev-python/egenix-mx-base x11-libs/hippo-canvas[python]" adjust to CDEPEND="dev-python/matplotlib[gtk] dev-python/egenix-mx-base x11-libs/hippo-canvas[python]" Reproducible: Always
Fixed, thanks.