Nice, please let us know if the patch fixes your problems and in that case we should include it in meta-mender.
Have not really seen this problem in Yocto and that is why ths patch is only applied when using mender-convert.
I suspect that there has been some boot firmware change recently that triggered this problem
As a C# / .NET Developer, only learning yocto because I have to, I’d think, that if we can live without that variable, we should do it? (Or is that reasoning too easy?)
How would I apply this patch as part of my yocto build?
You can take a look at how it is done in our layers,