lean4-htt/tests/elab_fail/defInst.lean.out.expected
Garmelon 08eb78a5b2
chore: switch to new test/bench suite (#12590)
This PR sets up the new integrated test/bench suite. It then migrates
all benchmarks and some related tests to the new suite. There's also
some documentation and some linting.

For now, a lot of the old tests are left alone so this PR doesn't become
even larger than it already is. Eventually, all tests should be migrated
to the new suite though so there isn't a confusing mix of two systems.
2026-02-25 13:51:53 +00:00

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defInst.lean:8:26-8:32: error(lean.synthInstanceFailed): failed to synthesize instance of type class
BEq Foo
Hint: Adding the command `deriving instance BEq for Foo` may allow Lean to derive the missing instance.
fun x y => sorry : (x y : Foo) → ?m x y
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fun x y => x == y : Foo → Foo → Bool
[("hello", "hello")]
false
true
true
@[implicit_reducible] def instMonadM : Monad M :=
ReaderT.instMonad