The package is widely used and bug reports come in frequently. Fortunately
it has an active upstream to get help and to get bugs fixed. Preferably
the maintainer has a good understanding of XSLT1 (there is a separate
source package for XSLT2, which has not yet been packaged).
The package is built from multiple tarballs (docbook-xsl, docbook-xsl-ns).
The package description is: stylesheets for processing DocBook XML to various output formats
These are modular XSL stylesheets for processing documents composed
with the DocBook XML DTD and its derivatives ("Simplified" DocBook
XML, JRefEntry DTD, etc.).
The stylesheets provide XSLT transformations for (X)HTML, WordML, HTML Help,
JavaHelp, Man page (nroff), Website, Eclipse Platform Help file and XSL
Formatting Object (XSL-FO) output. The latter can be further processed to
a number of print formats using FOP or TeX-based tools.
The stylesheets are modular in the sense that you can extend and, to some
extent, customize them. The documentation is included in a separate package.