pythonPackages.singledispatch: move expression (#44654)

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

@@ -0,0 +1,27 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, six
+}:
+
+buildPythonPackage rec {
+  pname = "singledispatch";
+  version = "3.4.0.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "5b06af87df13818d14f08a028e42f566640aef80805c3b50c5056b086e3c2b9c";
+  };
+
+  propagatedBuildInputs = [ six ];
+
+  # pypi singledispatch tarbal does not contain tests
+  doCheck = false;
+
+  meta = {
+    description = "This library brings functools.singledispatch from Python 3.4 to Python 2.6-3.3.";
+    homepage = https://docs.python.org/3/library/functools.html;
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ costrouc ];
+  };
+}

pkgs/top-level/python-packages.nix

@@ -501,6 +501,8 @@ in {
 
   simpleeval = callPackage ../development/python-modules/simpleeval { };
 
+  singledispatch = callPackage ../development/python-modules/singledispatch { };
+
   sip = callPackage ../development/python-modules/sip { };
 
   sortedcontainers = callPackage ../development/python-modules/sortedcontainers { };
@@ -2549,21 +2551,6 @@ in {
     };
   };
 
-  singledispatch = buildPythonPackage rec {
-    name = "singledispatch-3.4.0.3";
-
-    propagatedBuildInputs = with self; [ six ];
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/s/singledispatch/${name}.tar.gz";
-      sha256 = "5b06af87df13818d14f08a028e42f566640aef80805c3b50c5056b086e3c2b9c";
-    };
-
-    meta = {
-      homepage = https://docs.python.org/3/library/functools.html;
-    };
-  };
-
   functools32 = if isPy3k then null else buildPythonPackage rec {
     name = "functools32-${version}";
     version = "3.2.3-2";