From 01ad9f01f05dd8ae85fbabd8e27f46958f7872c1 Mon Sep 17 00:00:00 2001
From: Iwan <tracnar@gmail.com>
Date: Sun, 16 Mar 2025 20:28:12 +0100
Subject: [PATCH] typeguard: avoid writing bytecode during tests to make
 reproducible #384704

---
 pkgs/development/python-modules/typeguard/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/python-modules/typeguard/default.nix b/pkgs/development/python-modules/typeguard/default.nix
index 4873e61061da..4f74f088f82d 100644
--- a/pkgs/development/python-modules/typeguard/default.nix
+++ b/pkgs/development/python-modules/typeguard/default.nix
@@ -53,6 +53,10 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  # To prevent test from writing out non-reproducible .pyc files
+  # https://github.com/agronholm/typeguard/blob/ca512c28132999da514f31b5e93ed2f294ca8f77/tests/test_typechecked.py#L641
+  preCheck = "export PYTHONDONTWRITEBYTECODE=1";
+
   pythonImportsCheck = [ "typeguard" ];
 
   meta = {