pythonPackages.marshmallow: init at 2.13.5

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

@@ -0,0 +1,27 @@
+{ lib, buildPythonPackage, fetchPypi,
+  dateutil, simplejson
+}:
+
+buildPythonPackage rec {
+  pname = "marshmallow";
+  name = "${pname}-${version}";
+  version = "2.13.5";
+
+  meta = {
+    homepage = "https://github.com/marshmallow-code/marshmallow";
+    description = ''
+      A lightweight library for converting complex objects to and from
+      simple Python datatypes.
+    '';
+    license = lib.licenses.mit;
+  };
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "048rzdkvnais51xdiy27nail5vxjb4ggw3vd60prn1q11lf16wig";
+  };
+
+  propagatedBuildInputs = [ dateutil simplejson ];
+
+  doCheck = false;
+}