edf804c70f
This PR generalizes the `noConfusion` constructions to heterogeneous equalities (assuming propositional equalities between the indices). This lays ground work for better support for applying injection to heterogeneous equalities in grind. The `Meta.mkNoConfusion` app builder shields most of the code from these changes. Since the per-constructor noConfusion principles are now more expressive, `Meta.mkNoConfusion` no longer uses the general one. In `Init.Prelude` some proofs are more pedestrian because `injection` now needs a bit more machinery. This is a breaking change for whoever uses the `noConfusion` principle manually and explicitly for a type with indices. Fixes #11450. |
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