How to disable PyIceberg SQL Engine's auto namespace discovery in marimo?

[harry-xm]

My principal (i.e. credentials) doesn't allow access to our Iceberg instance's /v1/namespaces API, so I always get this warning when executing load_catalog from PyIceberg:

[W 260112 09:03:58 pyiceberg:110] Failed to get databases
    Traceback (most recent call last):
      File "/work/iceberg-test/.venv/lib/python3.13/site-packages/pyiceberg/catalog/rest.py", line 823, in list_namespaces
        response.raise_for_status()
        ~~~~~~~~~~~~~~~~~~~~~~~~~^^
      File "/work/iceberg-test/.venv/lib/python3.13/site-packages/requests/models.py", line 1026, in raise_for_status
        raise HTTPError(http_error_msg, response=self)
    requests.exceptions.HTTPError: 403 Client Error: Forbidden for url: http://<redacted>/v1/namespaces

which originates from the pyiceberg SQL engine integration in marimo:

marimo/marimo/_sql/engines/pyiceberg.py

Lines 81 to 84 in 14ee233

	try:
	namespaces = sorted(
	self._connection.list_namespaces()
	) # Sort for consistent ordering

Is it possible to disable this integration or the list_namespaces() call specifically?

[Light2Dark]

I think maybe we can look for forbidden exception & should try-except that function specifically. Open to a contribution if you're willing to look into it!

[mscolnick]

@harry-xm you can also turn off auto-discovery of these tables: https://docs.marimo.io/guides/working_with_data/sql/?h=auto#database-schema-and-table-auto-discovery

[harry-xm]

Yes, but the list_namespaces() call comes before that and doesn't have such configuration.