lean4-htt/tests/lean/276.lean
Leonardo de Moura 90a79a0b06 chore: remove command universes
Now, `universe` may declare many universes. The goal is to make it
consistent with the `variable` command
2021-06-29 17:01:07 -07:00

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universe u v
-- `Type u` version can be defined without this option, but I get the same error
set_option bootstrap.inductiveCheckResultingUniverse false in
inductive PEmpty : Sort u
-- `#check` works
set_option pp.all true in
#check fun {α : Sort v} => PEmpty.rec (fun _ => α)
-- but `def` doesn't work
-- error: (kernel) compiler failed to infer low level type, unknown declaration 'PEmpty.rec'
def PEmpty.elim {α : Sort v} := PEmpty.rec (fun _ => α)