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fix: Instantiate type when detecting eq #91

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aniva merged 1 commits from bug/eq-detection-in-congruence into dev 2024-09-03 19:19:10 -07:00
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1 changed files with 3 additions and 3 deletions
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6
Pantograph/Tactic/Congruence.lean
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@ -7,7 +7,7 @@ namespace Pantograph.Tactic
def congruenceArg (mvarId: MVarId): MetaM (List MVarId) := mvarId.withContext do
mvarId.checkNotAssigned `Pantograph.Tactic.congruenceArg
let target ← mvarId.getType
let .some (β, _, _) := target.eq? | throwError "Goal is not an Eq"
let .some (β, _, _) := (← instantiateMVars target).eq? | throwError "Goal is not an Eq"
let userName := (← mvarId.getDecl).userName
let u ← Meta.mkFreshLevelMVar
@ -36,7 +36,7 @@ def evalCongruenceArg: Elab.Tactic.TacticM Unit := do
def congruenceFun (mvarId: MVarId): MetaM (List MVarId) := mvarId.withContext do
mvarId.checkNotAssigned `Pantograph.Tactic.congruenceFun
let target ← mvarId.getType
let .some (β, _, _) := target.eq? | throwError "Goal is not an Eq"
let .some (β, _, _) := (← instantiateMVars target).eq? | throwError "Goal is not an Eq"
let userName := (← mvarId.getDecl).userName
let u ← Meta.mkFreshLevelMVar
let α ← Meta.mkFreshExprMVar (.some $ mkSort u)
@ -65,7 +65,7 @@ def evalCongruenceFun: Elab.Tactic.TacticM Unit := do
def congruence (mvarId: MVarId): MetaM (List MVarId) := mvarId.withContext do
mvarId.checkNotAssigned `Pantograph.Tactic.congruence
let target ← mvarId.getType
let .some (β, _, _) := target.eq? | throwError "Goal is not an Eq"
let .some (β, _, _) := (← instantiateMVars target).eq? | throwError "Goal is not an Eq"
let userName := (← mvarId.getDecl).userName
let u ← Meta.mkFreshLevelMVar
let α ← Meta.mkFreshExprMVar (.some $ mkSort u)