Hi All,
Funny, did a check on my HAOS 6.6 to see if OS 7 will give problems.
And this is the result… Official HAOS 6.6 and have this error haha 
[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] done.
[services.d] starting services
[services.d] done.
[22:18:49] INFO: Don't worry, this temporary installation is not overwriting your current one.
[22:18:49] INFO: Installing Home Assistant: stable...
[22:18:49] INFO: Please be patient, this might take a few minutes...
[22:20:27] INFO: Installed Home Assistant 2021.12.0
[22:20:27] INFO: Making a copy of your configuration for checking...
[22:23:31] INFO: Checking your configuration against this version...
[22:30:26] ERROR: The configuration check did not pass!
[22:30:26] ERROR: See the output below for more details.
Testing configuration at /tmp/config
INFO:homeassistant.helpers.storage:Migrating core.device_registry storage from 1.1 to 1.2
INFO:homeassistant.helpers.storage:Migrating core.entity_registry storage from 1.1 to 1.4
WARNING:homeassistant.util.yaml.loader:YAML file /tmp/config/secrets.yaml contains duplicate key "meekdoorbell". Check lines 103 and 112
Fatal error while loading config: The 'google-auth<2.0dev,>=1.25.0' distribution was not found and is required by google-api-core
Failed config
General Errors:
- The 'google-auth<2.0dev,>=1.25.0' distribution was not found and is required by google-api-core
Successful config (partial)
[22:30:26] INFO: The full output has been written to /share/check_config.txt
[cont-finish.d] executing container finish scripts...
[cont-finish.d] done.
[s6-finish] waiting for services.
[s6-finish] sending all processes the TERM signal.
[s6-finish] sending all processes the KILL signal and exiting.