I have the same problem pointing at the OpenAPI spec for a vendor, they host the spec in a single central location but host several different tenants for your use, all on which have a different base URL. Being able to override by env would be great. Right now I can't use the OpenAPI resource type.
Might be related to this.
https://community.retool.com/t/changing-environments-with-openapi-resources-does-not-work-as-expected/9340