python2Packages.certifi: init at 2019.11.28

We use the sources from 2019.11.28 to build, but inherit the cert bundle
from the maintained Python3-only version of certifi.

Co-authored-by: adisbladis <adisbladis@gmail.com>

pkgs/development/python-modules/certifi/python2.nix

@@ -0,0 +1,34 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, python3
+}:
+
+let
+  inherit (python3.pkgs) certifi;
+
+in buildPythonPackage rec {
+  pname = "certifi";
+  version = "2019.11.28";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "25b64c7da4cd7479594d035c08c2d809eb4aab3a26e5a990ea98cc450c320f1f";
+  };
+
+  postPatch = ''
+    cp ${certifi.src}/certifi/cacert.pem certifi/cacert.pem
+  '';
+
+  pythonImportsCheck = [ "certifi" ];
+
+  # no tests implemented
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://certifi.io/";
+    description = "Python package for providing Mozilla's CA Bundle";
+    license = licenses.isc;
+    maintainers = with maintainers; [ ]; # NixOps team
+  };
+}

pkgs/top-level/python2-packages.nix

@@ -46,6 +46,8 @@ with self; with super; {
 
   cdecimal = callPackage ../development/python-modules/cdecimal { };
 
+  certifi = callPackage ../development/python-modules/certifi/python2.nix { };
+
   chardet = callPackage ../development/python-modules/chardet/2.nix { };
 
   cheetah = callPackage ../development/python-modules/cheetah { };