Configure no longer works after pulling in the latest QEMU commits

[Hao Xiang]

Hi,

After pulling in the QEMU latest commits, I can no longer run the "configure" command. Below is the error message I am seeing. I believe this is related to this change "configure: create a python venv unconditionally".

I am running on Debian GNU/Linux 11 (bullseye) and 5.15 kernel version.

What can I do to fix/work around the issue?

Thanks, Hao

$ ~/source/qemu-community-trees/qemu/bin/debug/test$ ../../../configure --enable-debug --static --disable-gnutls

python determined to be '/usr/bin/python3'

python version: Python 3.9.2

mkvenv: Creating non-isolated virtual environment at 'pyvenv'

Skipping existing file /data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/bin/pip

Skipping existing file /data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/bin/pip3

mkvenv: checking for meson>=0.63.0

Metadata: missing: ['Author'], warnings: []

Metadata: missing: ['Home-page', 'Author'], warnings: []

Metadata: missing: ['Home-page', 'Author'], warnings: []

Not recognised as a requirement: ''

Unexpected line: quitting requirement scan: '[docs]'

Not recognised as a requirement: ''

Unexpected line: quitting requirement scan: '[jedi]'

Not recognised as a requirement: ''

Unexpected line: quitting requirement scan: "[:python_version < '3']"

Metadata: missing: ['Home-page', 'Author'], warnings: []

Not recognised as a requirement: ''

Unexpected line: quitting requirement scan: '[ARC]'

Not recognised as a requirement: ''

Unexpected line: quitting requirement scan: '[DNSSEC]'

mkvenv did not complete successfully:

Traceback (most recent call last):

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/metadata.py", line 730, in __init__

   self._data = json.loads(data)

  File "/usr/lib/python3.9/json/__init__.py", line 346, in loads

   return _default_decoder.decode(s)

  File "/usr/lib/python3.9/json/decoder.py", line 337, in decode

   obj, end = self.raw_decode(s, idx=_w(s, 0).end())

  File "/usr/lib/python3.9/json/decoder.py", line 355, in raw_decode

   raise JSONDecodeError("Expecting value", s, err.value) from None

json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "/home/hao.xiang/source/qemu-community-trees/qemu/python/scripts/mkvenv.py", line 877, in main

   ensure(

  File "/home/hao.xiang/source/qemu-community-trees/qemu/python/scripts/mkvenv.py", line 768, in ensure

   _do_ensure(dep_specs, online, wheels_dir)

  File "/home/hao.xiang/source/qemu-community-trees/qemu/python/scripts/mkvenv.py", line 723, in _do_ensure

   dist = dist_path.get_distribution(matcher.name)

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/database.py", line 240, in get_distribution

   self._generate_cache()

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/database.py", line 167, in _generate_cache

   for dist in self._yield_distributions():

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/database.py", line 157, in _yield_distributions

   yield old_dist_class(r.path, self)

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/database.py", line 878, in __init__

   metadata = self._get_metadata(path)

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/database.py", line 958, in _get_metadata

   metadata = Metadata(path=path, scheme='legacy')

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/metadata.py", line 741, in __init__

   self.validate()

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/metadata.py", line 958, in validate

   missing, warnings = self._legacy.check(True)

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/metadata.py", line 522, in check

   self.set_metadata_version()

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/metadata.py", line 289, in set_metadata_version

   self._fields['Metadata-Version'] = _best_version(self._fields)

  File "/data00/home/hao.xiang/source/qemu-community-trees/qemu/bin/debug/test/pyvenv/share/python-wheels/distlib-0.2.8-py2.py3-none-any.whl/distlib/metadata.py", line 167, in _best_version

   raise MetadataConflictError('Unknown metadata set')

pip._vendor.distlib.metadata.MetadataConflictError: Unknown metadata set