lean4-htt/tests/pkg/module/Module/ImportedAll.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`.

---------

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

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module
prelude
import all Module.Basic
/-! `import all` should import private information, privately. -/
/--
info: theorem t : f = 1 :=
sorry
-/
#guard_msgs in
#print t
/--
error: type mismatch
y
has type
Vector Unit 1 : Type
but is expected to have type
Vector Unit f : Type
-/
#guard_msgs in
theorem v (x : Vector Unit f) (y : Vector Unit 1) : x = y := sorry