Problem building emulators/qemu

[Paul Goyette <paul%whooppee.com@localhost>]

Running on a NetBSD amd64 9.99.90 host, and building everything in a
chroot sandbox (created with pkgtools/mksandbox).  All dependencies
were rebuilt "from scratch" using pkgsrc updated 2021-10-28 at
16:51:56 UTC.

Looks like some sort of issue with the version of py39-docutils?
The installed version is 0.18 but it looks like qemu wants only
0.12 thru 0.17 ?

Here's the failure section of the log file - the entire build log
is attached.

...
../docs/meson.build:30: WARNING: /usr/pkg/bin/sphinx-build-3.9: Traceback (most recent call last):
  File "/usr/pkg/lib/python3.9/site-packages/pkg_resources/__init__.py", line 568, in _build_master
    ws.require(__requires__)
  File "/usr/pkg/lib/python3.9/site-packages/pkg_resources/__init__.py", line 886, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/pkg/lib/python3.9/site-packages/pkg_resources/__init__.py", line 777, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (docutils 0.18 (/usr/pkg/lib/python3.9/site-packages), Requirement.parse('docutils<0.17,>=0.12'), {'Sphinx'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/pkg/bin/sphinx-build-3.9", line 33, in <module>
    sys.exit(load_entry_point('Sphinx==3.5.4', 'console_scripts', 'sphinx-build')())
  File "/usr/pkg/bin/sphinx-build-3.9", line 25, in importlib_load_entry_point
    return next(matches).load()
  File "/usr/pkg/lib/python3.9/importlib/metadata.py", line 77, in load
    module = import_module(match.group('module'))
  File "/usr/pkg/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
...


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