message: add env vars back
diff: ReferencedContainer = "container:Emission.xcodeproj">
  </BuildableReference>
  </BuildableProductRunnable>
  + <EnvironmentVariables>
  + <EnvironmentVariable
  + key = "CG_CONTEXT_SHOW_BACKTRACE"
  + value = "1"
  + isEnabled = "YES">
  + </EnvironmentVariable>
  + <EnvironmentVariable
  + key = "SRCROOT"
  + value = "$(SRCROOT)"
  + isEnabled = "YES">
  + </EnvironmentVariable>
  + </EnvironmentVariables>
  <AdditionalOptions>
  </AdditionalOptions>
  <LocationScenarioReference
  