Is it possible to merge stack-level configuration values into project-level configuration objects? Consider Pulumi.yaml:

config:
  obj1:
    value:
      prop1: val1
      prop2: val2

And Pulumi.stack.yaml

config:
  obj1:
    prop2: val20
    prop3: val3

I'm seeing all the stack level values in my stack, but prop1 is gone. I'm guessing it's just using the stack object, completely overwriting the default project-level object.

It's on our future plans, see the long comment at https://github.com/pulumi/pulumi/issues/2307#issuecomment-1225592223