Advertise encryption support in kernelspec

Author: krassowski

hatch_build.py

@@ -20,7 +20,10 @@ def initialize(self, version, build_data):
 
         # When building a standard wheel, the executable specified in the kernelspec is simply 'python'.
         if version == "standard":
-            overrides["metadata"] = dict(debugger=True)
+            overrides["metadata"] = {
+                "debugger": True,
+                "supported_encryption": "curve",
+            }
             argv = make_ipkernel_cmd(executable="python")
 
         # When installing an editable wheel, the full `sys.executable` can be used.

ipykernel/kernelspec.py

@@ -66,7 +66,7 @@ def get_kernel_dict(
         ),
         "display_name": "Python %i (ipykernel)" % sys.version_info[0],
         "language": "python",
-        "metadata": {"debugger": True},
+        "metadata": {"debugger": True, "supported_encryption": "curve"},
         "kernel_protocol_version": "5.5",
     }
 

tests/test_kernelspec.py

@@ -35,6 +35,8 @@ def assert_kernel_dict(d):
     assert d["argv"] == make_ipkernel_cmd()
     assert d["display_name"] == "Python %i (ipykernel)" % sys.version_info[0]
     assert d["language"] == "python"
+    assert d["metadata"]["debugger"] is True
+    assert d["metadata"]["supported_encryption"] == "curve"
     assert d["kernel_protocol_version"] == "5.5"
 
 
@@ -47,6 +49,8 @@ def assert_kernel_dict_with_profile(d):
     assert d["argv"] == make_ipkernel_cmd(extra_arguments=["--profile", "test"])
     assert d["display_name"] == "Python %i (ipykernel)" % sys.version_info[0]
     assert d["language"] == "python"
+    assert d["metadata"]["debugger"] is True
+    assert d["metadata"]["supported_encryption"] == "curve"
     assert d["kernel_protocol_version"] == "5.5"