title: Is there a way to change .xcconfig files per scheme in Xcode 9?
body: <p>I currently have a project setup with one target and multiple build configurations (DEBUG, STAGING, RELEASE). Each build configuration has a corresponding .xcconfig file for the one target/scheme. I would like to keep the project at one target, and add a second scheme that would use a different set of .xcconfig files for the 3 build configurations. Is there a way to swap out those .xcconfig references at build time on a per-scheme basis without having to set up a separate target for the 2nd scheme?</p>