I installed Xcode and re-build libxml2 and libxslt manually like described here tar xzvf libxml2-2.7.3.tar.gz cd libxml2-2.7.3 ./configure --with-python=/System/Library/Frameworks/Python.framework/Versions/2.3/ make sudo make install
cd /usr/local/src curl -O ftp://xmlsoft.org/libxslt/libxslt-1.1.20.tar.gz cd libxslt-1.1.20 ./configure make sudo make install