Hi all, the new Cython project has started its work on the original Pyrex source code. It already has several advantages over Pyrex, including support for list comprehension and type based optimisation. http://www.cython.org/ Cython includes the patches lxml originally needed in Pyrex. lxml 2.0 will therefore stop shipping with a modified Pyrex and simply require Cython if people want to build from non-release sources. Note that we will continue to ship releases with the generated .c files, so no Cython is required by people who just want to build from release sources. Have fun, Stefan