If XDG_DATA_HOME is configured without JUPYTER_DATA_DIR, the app doesn't appear to find kernels

[randallb]

Applies To

• Notebooks (.ipynb files)
• Interactive Window and/or Cell Scripts (.py files with #%% markers)

What happened?

When XDG_DATA_HOME is configured (seemingly without JUPYTER_DATA_DIR) on unix, the plugin fails to properly detect kernels.

vscode-jupyter/src/kernels/raw/finder/jupyterPaths.node.ts

Line 32 in f41cffb

const linuxJupyterPath = path.join('.local', 'share', 'jupyter', 'kernels');

https://github.com/bolt-foundry/vscode-jupyter/blob/main/build/installDenoKernel.ts#L10

vscode-jupyter/src/kernels/raw/finder/jupyterPaths.node.unit.test.ts

Lines 251 to 260 in f41cffb

	test('Get datadir for non-python kernel on Unix with JUPYTER_DATA_DIR & XDG_DATA_HOME', async () => {
	when(platformService.homeDir).thenReturn(unixHomeDir);
	when(platformService.osType).thenReturn(OSType.Linux);
	const xdgDataHome = (process.env['XDG_DATA_HOME'] = '/usr/xdgDataHome');
	const dataDirs = await jupyterPaths.getDataDirs({ resource: undefined });
	assert.strictEqual(dataDirs.length, 1);
	assert.strictEqual(dataDirs[0].toString(), Uri.joinPath(Uri.file(xdgDataHome), 'jupyter').toString());
	});

I think those are the related callsites / tests. I didn't feel familiar enough to try a PR, but am happy to do so.

VS Code Version

1.89

Jupyter Extension Version

v2024.4.0

Jupyter logs

No response

Coding Language and Runtime Version

deno

Language Extension Version (if applicable)

No response

Anaconda Version (if applicable)

No response

Running Jupyter locally or remotely?

Local