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$\begingroup$ Not an answer but it seems likely to extend this using ltac: apply the theorem to evars, (optionally, unify the LHS against arbitrary subterms using match goal and context), then change with the RHS. $\endgroup$
– Blaisorblade
Commented Mar 24, 2023 at 12:47
$\begingroup$ @Blaisorblade I'm not that great with ltac, could you expand on that? $\endgroup$
– sudgy
Commented Mar 24, 2023 at 17:45

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