Effectively revert commit a8f66573f3. This adds a little more bureaucracy when adding a new untyped third-party library, but will prevent bugs like the ones fixed in #19105 and #19106. Signed-off-by: Anders Kaseorg <anders@zulip.com>
a8f66573f3
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Since we already have one for Black, this saves a top-level file. Signed-off-by: Anders Kaseorg <anders@zulip.com>