python.pkgs.backports_shutil_get_terminal_size: fix python 2 tests

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

@@ -0,0 +1,26 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pytest
+, pythonOlder
+}:
+
+if !(pythonOlder "3.3") then null else buildPythonPackage rec {
+  pname = "backports.shutil_get_terminal_size";
+  version = "1.0.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "713e7a8228ae80341c70586d1cc0a8caa5207346927e23d09dcbcaf18eadec80";
+  };
+
+  checkInputs = [
+    pytest
+  ];
+
+  meta = {
+    description = "A backport of the get_terminal_size function from Python 3.3’s shutil.";
+    homepage = https://github.com/chrippa/backports.shutil_get_terminal_size;
+    license = with lib.licenses; [ mit ];
+  };
+}