fix implicit_reexport issues and enforce them going forward

This detects cases where module A imports a function from B, and C
imports that same function from A instead of B. It's not part of the API
contract of A, and causes innocent refactoring to break things.

1 files changed, 1 insertions, 0 deletions

diff --git a/.mypy.ini b/.mypy.ini
index 2ee1e59..70fdcd9 100644
--- a/.mypy.ini
+++ b/.mypy.ini
@@ -3,6 +3,7 @@ strict_optional               = False
 show_error_context            = False
 show_column_numbers           = True
 ignore_missing_imports        = True
+implicit_reexport             = False
 
 follow_imports                = silent
 warn_redundant_casts          = True