With the curent patch, and libxml2 (2.9.1+dfsg1-3ubuntu4.2), xubuntu-docs still will not build and validate. To fix this problem, I used the upstream patch here: https://git.gnome.org/browse/libxml2/commit/?id=dd8367da17c2948981a51e52c8a6beb445edf825 and rebuilt.
With the curent patch, and libxml2 (2.9.1+ dfsg1-3ubuntu4. 2), xubuntu-docs still will not build and validate. To fix this problem, I used the upstream patch here: https:/ /git.gnome. org/browse/ libxml2/ commit/ ?id=dd8367da17c 2948981a51e52c8 a6beb445edf825 and rebuilt.