get rid of "six" somewhere in the chain?

[yarikoptic]

system logs on typhon have a good number of logs like

2025-01-03T10:36:48.113782-05:00 typhon datalad-registry_worker_1[5701]: <frozen importlib._bootstrap>:914: ImportWarning: 

which I think are due to use of six but we no longer use it anywhere in datalad. so the question what/why is still pulling it in?

[candleindark]

six is required by python-dateutil which is required by celery and pandas.

Here is the pipdeptree output.

# pipdeptree --reverse --packages six
six==1.16.0
└── python-dateutil==2.9.0.post0 [requires: six>=1.5]
    ├── celery==5.3.6 [requires: python-dateutil>=2.8.2]
    │   ├── datalad-registry==0.3.0.post466+gf4aed5d.d20250106 [requires: celery~=5.0]
    │   └── flower==2.0.1 [requires: celery>=5.0.5]
    │       └── datalad-registry==0.3.0.post466+gf4aed5d.d20250106 [requires: flower~=2.0]
    └── pandas==2.2.2 [requires: python-dateutil>=2.8.2]
        ├── datalad-neuroimaging==0.3.4 [requires: pandas]
        │   └── datalad-registry==0.3.0.post466+gf4aed5d.d20250106 [requires: datalad-neuroimaging~=0.3.0]
        ├── formulaic==0.5.2 [requires: pandas>=1.0]
        │   └── pybids==0.16.4 [requires: formulaic>=0.2.4,<0.6]
        │       └── datalad-neuroimaging==0.3.4 [requires: pybids>=0.15.1]
        │           └── datalad-registry==0.3.0.post466+gf4aed5d.d20250106 [requires: datalad-neuroimaging~=0.3.0]
        └── pybids==0.16.4 [requires: pandas>=0.25.2]
            └── datalad-neuroimaging==0.3.4 [requires: pybids>=0.15.1]
                └── datalad-registry==0.3.0.post466+gf4aed5d.d20250106 [requires: datalad-neuroimaging~=0.3.0]