jhbuild on hoary

[J. Gardner Biggs]

I am considering trying to get a cvs build of gnome up on my machine via
jhbuild, but I can't seem to find what packages provide the following:

jgbiggs at osiris:~/bin $ ./jhbuild sanitycheck
Could not find DocBook XML DTD V4.1.2 in XML catalog
Could not find DocBook XSL Stylesheets in XML catalog

There are -so- many xml/xls docbook packages I don't know where to
start.  I have installed a few via synaptic, but I am still getting this
output from sanitycheck.

TIA