Instead of installing and then trying to figure out the config changes, I would like to prepare for this in advance. So I would like to get the default 21.02 config for my device, compare to my current config and prepare all the necessary changes.
Is there some way to achieve this? I don't see config files in the git tree, and I am guessing at least some of the config is created at install time on the device itself.
The network, system and wireless config are created on the fly at the first boot (based on the recipes included in the built firmware and the detected hardware.)
You can try to interprete the cryptic recipes included in the device definition, but in practical terms it is difficult (for network,system, wireless).