Merge #171832: python3Packages.limits: fix src reproducibility

...into staging-next

pkgs/development/python-modules/limits/default.nix

@@ -26,7 +26,13 @@ buildPythonPackage rec {
     owner = "alisaifee";
     repo = pname;
     rev = version;
-    hash = "sha256-4Njai0LT72U9Ra4pgHU0ZjF9oZexbijUgLFYaZi/LgE=";
+    # Upstream uses versioneer, which relies on git attributes substitution.
+    # This leads to non-reproducible archives on github. Remove the substituted
+    # file here, and recreate it later based on our version info.
+    extraPostFetch = ''
+      rm "$out/limits/_version.py"
+    '';
+    hash = "sha256-ja+YbRHCcZ5tFnoofdR44jbkkdDroVUdKeDOt6yE0LI=";
   };
 
   propagatedBuildInputs = [
@@ -53,6 +59,9 @@ buildPythonPackage rec {
     # redis-py-cluster doesn't support redis > 4
     substituteInPlace tests/conftest.py \
       --replace "import rediscluster" ""
+
+    # Recreate _version.py, deleted at fetch time due to non-reproducibility.
+    echo 'def get_versions(): return {"version": "${version}"}' > limits/_version.py
   '';
 
   pythonImportsCheck = [