lean4-htt/tests/pkg/module/Module/PrivateImported.lean
Sebastian Ullrich 01dbbeed99
feat: do not export def bodies by default (#8221)
This PR adjusts the experimental module system to not export the bodies
of `def`s unless opted out by the new attribute `@[expose]` on the `def`
or on a surrounding `section`.

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Co-authored-by: Markus Himmel <markus@lean-fro.org>
2025-05-15 12:16:54 +00:00

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module
private import Module.Basic
/-! `private import` should allow only private access to imported decls. -/
def g := f
/-- error: unknown identifier 'f' -/
#guard_msgs in
set_option autoImplicit false in
theorem t2 : f = 1 := sorry
/-- error: unknown identifier 'f' -/
#guard_msgs in
@[expose] def h : True := f