pythonPackages.dateparser: add python2-compatible expression

pkgs/development/python-modules/dateparser/0.x.nix

@@ -0,0 +1,55 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, mock
+, parameterized
+, pytestCheckHook
+, dateutil
+, pytz
+, regex
+, tzlocal
+, convertdate
+, umalqurra
+, jdatetime
+, ruamel_yaml
+}:
+
+buildPythonPackage rec {
+  pname = "dateparser";
+  version = "0.7.6";
+
+  src = fetchFromGitHub {
+    owner = "scrapinghub";
+    repo = "dateparser";
+    rev = "v${version}";
+    sha256 = "0j3sm4hlx7z0ci5fnjq5n9i02vvlfz0wxa889ydryfknjhy5apqw";
+  };
+
+  checkInputs = [
+    mock
+    parameterized
+    pytestCheckHook
+  ];
+
+  pytestFlagsArray = [ "tests" ];
+
+  disabledTestPaths = [
+    "tests/test_dateparser_data_integrity.py" # ImportError: No module named ruamel.yaml
+  ];
+
+  propagatedBuildInputs = [
+    # install_requires
+    dateutil pytz regex tzlocal
+    # extra_requires
+    convertdate umalqurra jdatetime ruamel_yaml
+  ];
+
+  pythonImportsCheck = [ "dateparser" ];
+
+  meta = with lib; {
+    description = "Date parsing library designed to parse dates from HTML pages";
+    homepage = "https://github.com/scrapinghub/dateparser";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}

pkgs/top-level/python-packages.nix

@@ -1669,7 +1669,10 @@ in {
     inherit (pkgs.llvmPackages) libcxx;
   };
 
-  dateparser = callPackage ../development/python-modules/dateparser { };
+  dateparser = if isPy27 then
+    callPackage ../development/python-modules/dateparser/0.x.nix { }
+  else
+    callPackage ../development/python-modules/dateparser { };
 
   datrie = callPackage ../development/python-modules/datrie { };