From 40ddbd3c4256110c36dae8a60df6bba7c9ec554a Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 6 Aug 2025 23:09:49 +0000
Subject: [PATCH 1/3] Initial plan


From 30b8cb8e2dc21faf46e778de75469e1048cf8bab Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 6 Aug 2025 23:22:41 +0000
Subject: [PATCH 2/3] Fix: Add support for startUsingLocalKernelSpec in
 NbExtensionsPathProvider

Co-authored-by: DonJayamanne <1948812+DonJayamanne@users.noreply.github.com>
---
 .../nbExtensionsPathProvider.node.ts             | 14 ++++++++++++++
 .../nbExtensionsPathProvider.unit.test.ts        | 16 ++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.node.ts b/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.node.ts
index 986e28515fb..39bcf82e5eb 100644
--- a/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.node.ts
+++ b/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.node.ts
@@ -25,6 +25,20 @@ export class NbExtensionsPathProvider implements INbExtensionsPathProvider {
                 }
                 return Uri.joinPath(Uri.file(sysPrefix), 'share', 'jupyter');
             }
+            case 'startUsingLocalKernelSpec': {
+                // If the local kernelspec has an associated Python interpreter, 
+                // use the same logic as startUsingPythonInterpreter
+                if (kernel.kernelConnectionMetadata.interpreter) {
+                    const sysPrefix = await getSysPrefix(kernel.kernelConnectionMetadata.interpreter);
+                    if (!sysPrefix) {
+                        return;
+                    }
+                    return Uri.joinPath(Uri.file(sysPrefix), 'share', 'jupyter');
+                }
+                // If no interpreter, we haven't come across scenarios with non-python kernels that use widgets
+                // & have custom widget sources. If we do, we can implement that as we come across them.
+                return;
+            }
             default: {
                 // We haven't come across scenarios with non-python kernels that use widgets
                 // & have custom widget sources. If we do, we can implement that as we come across them.
diff --git a/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.unit.test.ts b/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.unit.test.ts
index acc8b0f542c..6a8611c3e47 100644
--- a/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.unit.test.ts
+++ b/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.unit.test.ts
@@ -36,6 +36,13 @@ import { dispose } from '../../../../platform/common/utils/lifecycle';
             id: 'interpreterId'
         } as any
     });
+    const localKernelSpecWithPythonInterpreter = LocalKernelSpecConnectionMetadata.create({
+        id: 'localKernelSpecWithPythonInterpreter',
+        kernelSpec: mock<IJupyterKernelSpec>(),
+        interpreter: {
+            id: 'interpreterId'
+        } as any
+    });
     const serverProviderHandle = { handle: 'handle', id: 'id', extensionId: '' };
     const remoteKernelSpec = RemoteKernelSpecConnectionMetadata.create({
         id: '',
@@ -82,6 +89,15 @@ import { dispose } from '../../../../platform/common/utils/lifecycle';
                 assert.strictEqual(baseUrl?.toString(), Uri.file(path.join(__dirname, 'share', 'jupyter')).toString());
             }
         });
+        test('Returns base url for local kernelspec with python interpreter', async () => {
+            when(kernel.kernelConnectionMetadata).thenReturn(localKernelSpecWithPythonInterpreter);
+            const baseUrl = await provider.getNbExtensionsParentPath(instance(kernel));
+            if (isWeb) {
+                assert.isUndefined(baseUrl);
+            } else {
+                assert.strictEqual(baseUrl?.toString(), Uri.file(path.join(__dirname, 'share', 'jupyter')).toString());
+            }
+        });
         test('Returns base url for remote kernelspec', async () => {
             when(kernel.kernelConnectionMetadata).thenReturn(remoteKernelSpec);
             const baseUrl = await provider.getNbExtensionsParentPath(instance(kernel));

From 02d065cb726cf214b14ebbe1776dc0a7338b8e1a Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 7 Aug 2025 02:25:21 +0000
Subject: [PATCH 3/3] Fix formatting: Remove trailing whitespace from comment

Co-authored-by: DonJayamanne <1948812+DonJayamanne@users.noreply.github.com>
---
 .../scriptSourceProvider/nbExtensionsPathProvider.node.ts       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.node.ts b/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.node.ts
index 39bcf82e5eb..4adffa5f8f8 100644
--- a/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.node.ts
+++ b/src/notebooks/controllers/ipywidgets/scriptSourceProvider/nbExtensionsPathProvider.node.ts
@@ -26,7 +26,7 @@ export class NbExtensionsPathProvider implements INbExtensionsPathProvider {
                 return Uri.joinPath(Uri.file(sysPrefix), 'share', 'jupyter');
             }
             case 'startUsingLocalKernelSpec': {
-                // If the local kernelspec has an associated Python interpreter, 
+                // If the local kernelspec has an associated Python interpreter,
                 // use the same logic as startUsingPythonInterpreter
                 if (kernel.kernelConnectionMetadata.interpreter) {
                     const sysPrefix = await getSysPrefix(kernel.kernelConnectionMetadata.interpreter);