Based on the discussion at https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/for.2C.20unexpected.20need.20for.20type.20ascription/near/269083574 The consensus seemed to be that "auto pure" is more confusing than its worth. |
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|---|---|---|
| .. | ||
| a | ||
| b | ||
| builtin_attr | ||
| cyclic | ||
| deriving | ||
| prv | ||
| user_attr | ||
| user_attr_app | ||
| user_ext | ||
| user_opt | ||