c53c4b4d2e
This PR fixes private(ly imported) default instances from accidentally being used in public signatures, leading to follow-up errors. As reported at https://leanprover.zulipchat.com/#narrow/channel/270676-lean4/topic/Elaboration.20of.20heterogeneous.20mul.20with.20the.20module.20system
43 lines
1.2 KiB
Text
43 lines
1.2 KiB
Text
module
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import Module.Basic
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/-! `private import` should allow only private access to imported decls. -/
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public def g := f
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/--
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error: Unknown identifier `f`
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Note: A public declaration `f` exists but is imported privately; consider adding `public import Module.Basic`.
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-/
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#guard_msgs in
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public theorem t2 : f = 1 := sorry
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/--
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error: Unknown identifier `f`
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Note: A public declaration `f` exists but is imported privately; consider adding `public import Module.Basic`.
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-/
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#guard_msgs in
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@[expose] public def h : True := f
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/-! `initialize` should be run even if imported IR-only. -/
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public def publicDefOfPrivatelyInitialized := initialized
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/-! #12198: `local simp` should be accepted on privately imported theorem -/
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attribute [local simp] t
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/-- Setup for #12833. -/
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public def Namespaced.def2 := 0
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/-! Default instances from privately imported modules must not be applied during
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public-scope elaboration. Without the visibility filter on default instances, the
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priv-imported `instHMulNatCustom` would be tried before the core `instHMul` and
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fail with `Unknown constant` in this public theorem signature. -/
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public theorem hmulDefaultPrivacy (m : Nat) : ∀ n, m * n = m * n := by
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intro n
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rfl
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