CairoSVG relies on cssselect to handle CSS, this ebuild should depend on the dev-python/cssselect. However, as lxml, cssselect and tinycss are optional and only needed to handle CSS, they may be added in DEPEND/RDEPEND thanks to a use flag.
+*cairosvg-1.0 (19 Sep 2013) + + 19 Sep 2013; Sergey Popov <pinkbyte@gentoo.org> -cairosvg-0.4.3.ebuild, + +cairosvg-1.0.ebuild: + Version bump, fixes bug #421663. Migrate to distutils-r1, add + dev-python/cssselect as dependency, wrt bug #424812. Drop old version