Is it possible to get access to the Stack name while configuring a config value... etc test: ${stackname}.something?

Does this help? https://www.pulumi.com/docs/intro/concepts/stack/#getting-the-current-stack-programmatically

no sorry. Looking for a way to have variables inside a config value in the Pulumi.yaml

Config is by design pretty simple today. The thinking being if you want to start interpolating in values and things just use your programming language to do that.

yeah okay. just asking before i implement it in code. thanks for the answer!