Turn off codegen for XCode CoreData model

Question

Making CoreData model in XCode with already declared classes by myself, compiler code generated duplicates for me. How get rid of that?

Answer 1

In the Data Model editor, change the Codegen option in the data model inspector on the right to "Manual/none":

Sadly, as far as I know, you will have to do this for every Entity separately: there is no overall override.

Answer 2

You can disable all automatic code generation by setting the "tools version" for the data model file to Xcode 7.3. This won't have any other effect on the model-- there are no changes to the file format.