python3Packages.envisage: 4.9.2 -> 5.0.0

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

@@ -1,7 +1,7 @@
 { lib, fetchPypi, buildPythonPackage
-, configobj, six, traitsui
+, fetchpatch, configobj, six, traitsui
 , pytestCheckHook, tables, pandas
-, importlib-resources
+, pythonOlder, importlib-resources
 }:
 
 buildPythonPackage rec {
@@ -13,10 +13,20 @@ buildPythonPackage rec {
     sha256 = "12x5lcs1cllpybz7f0i1lcwvmqsaa5n818wb2165lj049wqxx4yh";
   };
 
+  patches = [
+    # python39: importlib_resources -> importlib.resources. This patch will be included
+    # in the next release after 5.1.0.
+    (fetchpatch {
+      url = "https://github.com/enthought/apptools/commit/0ae4f52f19a8c0ca9d7926e17c7de949097f24b4.patch";
+      sha256 = "165aiwjisr5c3lasg7xblcha7y1y5bq23vi3g9gc80c24bzwcbsw";
+    })
+  ];
+
   propagatedBuildInputs = [
     configobj
     six
     traitsui
+  ] ++ lib.optionals (pythonOlder "3.9") [
     importlib-resources
   ];