--- /usr/portage/app-text/calibre/calibre-0.6.17.ebuild	2009-10-14 07:49:11.000000000 +0200
+++ /usr/local/portage/app-text/calibre/calibre-0.6.17.ebuild	2009-10-15 19:13:25.000000000 +0200
@@ -17,7 +17,7 @@
 
 SLOT="0"
 
-IUSE=""
+IUSE="podofo"
 
 # libusb-compat is untested
 SHARED_DEPEND=">=dev-lang/python-2.6[sqlite]
@@ -35,7 +35,8 @@
 	>=dev-python/dnspython-1.6.0
 	>=virtual/poppler-0.12.0
 	>=sys-apps/help2man-1.36.4
-	app-text/podofo"
+	podofo? ( app-text/podofo ) 
+	!podofo? ( >=app-text/pdftk-1.12 )"
 
 RDEPEND="$SHARED_DEPEND
 	>=dev-python/reportlab-2.1"