So far I've only ever been using a private symbol that only exists within the codebase in question (and is then exported to other parts of said codebase as required).
If I ever decide to generalise the approach a bit, I'll hopefully remember to do precisely what you describe.
Possibly with the addition of providing an "I am overriding this deliberately" flag that blows up if it doesn't already have said symbol.
But for the moment, the maximally dumbass approach in my original post is DTRT for me so far.
So far I've only ever been using a private symbol that only exists within the codebase in question (and is then exported to other parts of said codebase as required).
If I ever decide to generalise the approach a bit, I'll hopefully remember to do precisely what you describe.
Possibly with the addition of providing an "I am overriding this deliberately" flag that blows up if it doesn't already have said symbol.
But for the moment, the maximally dumbass approach in my original post is DTRT for me so far.