gentoo-overlay/media-gfx/gthumb/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<herd>gnome</herd>
	<use>
		<flag name="http">Enable webservice integration through <pkg>net-libs/libsoup</pkg></flag>
		<flag name="json">Compile code that uses the libjson-glib library</flag>
		<flag name="slideshow">Enable slideshow plugin</flag>
		<flag name="webp">Enable support for webp image format</flag>
	</use>
</pkgmetadata>