Microstack test fails to build with snapcraft 7.1.0

[NucciTheBoss]

Microstack fails to build with core18 using snapcraft 7.1.0. Here is a a copy of the stacktrace:

Launching a container.
Waiting for container to be ready
Waiting for network to be ready...
core20 20220719 from Canonical✓ installed
"core20" switched to the "latest/stable" channel

Skipping pull patches (already ran)
Skipping pull rally-openstack (already ran)
Skipping pull tempest (already ran)
'tempest-dump' has dependencies that need to be staged: tempest
Skipping pull tempest (already ran)
Building tempest 
+ snapcraftctl build
Looking in links: /root/parts/tempest/python-packages
Processing /root/parts/tempest/python-packages/pbr-5.9.0-py2.py3-none-any.whl
Processing /root/parts/tempest/python-packages/cliff-3.10.1-py3-none-any.whl
Processing /root/parts/tempest/python-packages/jsonschema-3.2.0-py2.py3-none-any.whl
Processing /root/parts/tempest/python-packages/testtools-2.5.0-py3-none-any.whl
Processing /root/parts/tempest/python-packages/paramiko-2.11.0-py2.py3-none-any.whl
Processing /root/parts/tempest/python-packages/netaddr-0.8.0-py2.py3-none-any.whl
Processing /root/parts/tempest/python-packages/oslo.concurrency-4.5.1-py3-none-any.whl
Processing /root/parts/tempest/python-packages/oslo.config-8.8.0-py3-none-any.whl
Processing /root/parts/tempest/python-packages/oslo.log-4.8.0-py3-none-any.whl
Processing /root/parts/tempest/python-packages/stestr-3.2.1-py3-none-any.whl
Processing /root/parts/tempest/python-packages/oslo.serialization-4.3.0-py3-none-any.whl
Processing /root/parts/tempest/python-packages/oslo.utils-4.13.0-py3-none-any.whl
Processing /root/parts/tempest/python-packages/six-1.16.0-py2.py3-none-any.whl
Processing /root/parts/tempest/python-packages/fixtures-4.0.1.tar.gz
  Installing build dependencies ... error
  ERROR: Command errored out with exit status 1:
   command: /root/stage/usr/bin/python3 /root/stage/lib/python3.6/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-xh8zbwjc/overlay --no-warn-script-location --no-binary :none: --only-binary :none: --no-index --find-links /root/parts/tempest/python-packages -- 'pbr>=5.7.0' 'setuptools>=36.6.0' wheel
       cwd: None
  Complete output (5 lines):
  Looking in links: /root/parts/tempest/python-packages
  Processing /root/parts/tempest/python-packages/pbr-5.9.0-py2.py3-none-any.whl
  Processing /root/parts/tempest/python-packages/setuptools-59.6.0-py3-none-any.whl
  ERROR: Could not find a version that satisfies the requirement wheel (from versions: none)
  ERROR: No matching distribution found for wheel
  ----------------------------------------
WARNING: Discarding file:///root/parts/tempest/python-packages/fixtures-4.0.1.tar.gz. Command errored out with exit status 1: /root/stage/usr/bin/python3 /root/stage/lib/python3.6/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-xh8zbwjc/overlay --no-warn-script-location --no-binary :none: --only-binary :none: --no-index --find-links /root/parts/tempest/python-packages -- 'pbr>=5.7.0' 'setuptools>=36.6.0' wheel Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement fixtures>=3.0.0 (from versions: 4.0.1)
ERROR: No matching distribution found for fixtures>=3.0.0
Failed to run '/root/stage/usr/bin/python3 -m pip wheel --no-index --find-links /root/parts/tempest/python-packages --wheel-dir /tmp/tmp5s6ua_h2 --requirement /root/parts/tempest/build/requirements.txt': Exited with code 1.
Run the same command again with --debug to shell into the environment if you wish to introspect this failure.

I have a solid idea that the issue is due to a similar one I had with the main Microstack snap, where python3-wheel needed to be provided as a build dependency. The solution is alluded to here in a snapcraft forum post: https://forum.snapcraft.io/t/error-invalid-command-bdist-wheel/18960. Going to try this and see what happens.