python2Packages.typing: revert removal

This reverts commit ff692673773f18ca8940486f3a020212df2b7e76.

1 files changed, 32 insertions, 0 deletions

diff --git a/pkgs/development/python2-modules/typing/default.nix b/pkgs/development/python2-modules/typing/default.nix
new file mode 100644
index 000000000000..a835be985ff4
--- /dev/null
+++ b/pkgs/development/python2-modules/typing/default.nix
@@ -0,0 +1,32 @@
+{ lib, buildPythonPackage, fetchPypi, pythonOlder, isPy3k, isPyPy, unittestCheckHook
+, pythonAtLeast }:
+
+let
+  testDir = if isPy3k then "src" else "python2";
+
+in buildPythonPackage rec {
+  pname = "typing";
+  version = "3.10.0.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "13b4ad211f54ddbf93e5901a9967b1e07720c1d1b78d596ac6a439641aa1b130";
+  };
+
+  disabled = pythonAtLeast "3.5";
+
+  # Error for Python3.6: ImportError: cannot import name 'ann_module'
+  # See https://github.com/python/typing/pull/280
+  # Also, don't bother on PyPy: AssertionError: TypeError not raised
+  doCheck = pythonOlder "3.6" && !isPyPy;
+
+  checkInputs = [ unittestCheckHook ];
+
+  unittestFlagsArray = [ "-s" testDir ];
+
+  meta = with lib; {
+    description = "Backport of typing module to Python versions older than 3.5";
+    homepage = "https://docs.python.org/3/library/typing.html";
+    license = licenses.psfl;
+  };
+}