In Xcode 15.0.0 I have created a package using a template Swift Macro. I have named it 'MyMacroApple'. The template comes with #stringify macro so I have created an new app and named it 'MyMacroApp' then copy pasted the code from 'MyMacroApple' main.swift file
import MyMacroApple
let a = 17
let b = 25
let (result, code) = #stringify(a + b)
then I have added Local package dependency to the app project and selected package product 'MyMacroApple' of Library kind to my 'pocMyApp' target.
When I run the project I get the error: "No such module 'MyMacroApple'"