[Python-3000] Failure building docs of py3k r30a2

[Eric Hanchrow]

On Ubuntu 7.10 "Gutsy Gibbon":

Unfortunately I don't really know python, so am unable to debug this.

I checked out by doing

        svn co http://svn.python.org/projects/python/tags/r30a2 py3k

Then I built python itself with no apparent trouble.  But building the docs fails:

    make -k html
    mkdir -p build/html build/doctrees
    python2.5 tools/sphinx-build.py -bhtml -dbuild/doctrees  . build/html
    1mtrying to load pickled env...;49;00m done
    1mbuilding [html]:;49;00m targets for 0 source files that are out of date
    1mreading, updating environment:;49;00m 0 added, 0 changed, 0 removed 1m;49;00m
    1mcreating index...;49;00m
    1mwriting output...;49;00m
    ;01mcontents.rst;49;00m
    1mfinishing...;49;00m
    1mwriting additional files...;49;00m
    Traceback (most recent call last):
      File "tools/sphinx-build.py", line 23, in <module>
        sys.exit(main(sys.argv))
      File "/usr/local/src/py3k/Doc/tools/sphinx/__init__.py", line 145, in main
        builderobj.build_update()
      File "/usr/local/src/py3k/Doc/tools/sphinx/builder.py", line 208, in build_update
        'out of date' % len(to_build))
      File "/usr/local/src/py3k/Doc/tools/sphinx/builder.py", line 244, in build
        self.finish()
      File "/usr/local/src/py3k/Doc/tools/sphinx/builder.py", line 459, in finish
        download_base_url = self.config['html_download_base_url'],
    KeyError: 'html_download_base_url'
    make: *** [build] Error 1
    make: Target `html' not remade because of errors.

    Compilation exited abnormally with code 2 at Sat Jan 12 08:46:15

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do all day but witch-hunt the heretics.
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