happy documentation fails to build

Hi all,

The happy 1.15 documentation fails to build for me. The interesting
looking bits of the build log are:

[...]
checking for xmllint... /usr/bin/xmllint
checking for DocBook DTD... ok
checking for xsltproc... /usr/bin/xsltproc
checking for DocBook XSL stylesheet directory...
/usr/share/xml/docbook/stylesheet/nwalsh
checking for fop... no
checking for fop.sh... no
checking for xmltex... /usr/bin/xmltex
checking for dvips... /usr/bin/dvips
[...]
/usr/bin/make -C happy/doc ps html
make[1]: Entering directory `/home/igloo/happy/new/happy-1.15/happy/doc'
/usr/bin/xsltproc --output happy.fo \
        --stringparam toc.section.depth 3 --stringparam section.autolabel 1 
--stringparam section.label.includes.component.label 1   \
        /usr/share/xml/docbook/stylesheet/nwalsh/fo/docbook.xsl happy.xml
Making portrait pages on USletter paper (8.5inx11in)
/usr/bin/xmltex happy.fo
This is TeX, Version 3.14159 (Web2C 7.4.5)
[...]
! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...

l.31 ...o:block>1.</fo:block></fo:list-item-label>
                                                  <fo:list-item-body start-i...

? Output written on happy.dvi (5 pages, 97888 bytes).
Transcript written on happy.log.
make[1]: *** [happy.dvi] Error 1
make[1]: *** Deleting file `happy.dvi'
make[1]: Leaving directory `/home/igloo/happy/new/happy-1.15/happy/doc'
make: *** [build-stamp] Error 2




If I reformat it a bit then the error is in this bit of happy.fo:


      <fo:list-block id="id2529507" space-before.optimum="1em" 
space-before.minimum="0.8em" space-before.maximum="1.2em" 
space-after.optimum="1em" space-after.minimum="0.8em" 
space-after.maximum="1.2em" provisional-label-separation="0.2em" 
provisional-distance-between-starts="2em">
        <fo:list-item id="item-default-backend" space-before.optimum="1em" 
space-before.minimum="0.8em" space-before.maximum="1.2em">
          <fo:list-item-label end-indent="label-end()">
            <fo:block>1.</fo:block>
          <!-- foo --></fo:list-item-label>
          <fo:list-item-body start-indent="body-start()">
            <fo:block>
              <fo:block>`standard' Haskell 98 (should work with any compiler
    that compiles Haskell 98).</fo:block>
            </fo:block>
          </fo:list-item-body>
        </fo:list-item>



and now looks like this:

! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1801           <!-- foo --></fo:list-item-label>



Thanks
Ian