Why do I get errors about missing UCS4 symbols when installing lxml?
Most likely, you use a Python installation that was configured for internal use of UCS2 unicode, meaning 16-bit unicode. The lxml egg distributions are generally compiled on platforms that use UCS4, a 32-bit unicode encoding, as this is used on the majority of platforms. Sadly, both are not compatible, so the eggs can only support the one they were compiled with. This means that you have to compile lxml from sources for your system. Note that you do not need Cython for this, the lxml source distribution is directly compilable on both platform types. See the build instructions on how to do this.
