diff -up sage-5.8/spkg/build/sage-5.8/sage/geometry/polyhedron/base.py.orig sage-5.8/spkg/build/sage-5.8/sage/geometry/polyhedron/base.py --- sage-5.8/spkg/build/sage-5.8/sage/geometry/polyhedron/base.py.orig 2013-03-19 16:20:52.760727178 -0300 +++ sage-5.8/spkg/build/sage-5.8/sage/geometry/polyhedron/base.py 2013-03-19 16:21:00.096727459 -0300 @@ -3129,11 +3129,6 @@ class Polyhedron_base(Element): David Avis's lrs program. """ - if is_package_installed('lrs') != True: - print 'You must install the optional lrs package ' \ - 'for this function to work' - raise NotImplementedError - in_str = self.cdd_Vrepresentation() in_str += 'volume' in_filename = tmp_filename()