When writing CDK, I find myself wanting to use environment variables locally (e.g. .env.local), but use ssm for long lived environments like stage/prod. Prioritizing env variables over parameter store values seems like a common pattern. Before I go writing a method to do this, is there a common recipe or util available for this purpose?

I do this in my ssm loader code, it checks to see if there's a matching env and uses that

I thought you were going to say "use SSM for everything" 😆

haha well use ssm for everything but sometimes you need to flip a value for a bit and env tends to be easy