WFS format incompatible with OGR data source ('list' object has no attribute 'split')

[IamJeffG]

First, FeatureServer.DataSource.OGR:__init__ parses the attribute_cols here.
Then, vectorformats.Formats.WFS tries to parse them again here.

A very basic WFS query:

http://localhost:8080/?SERVICE=WFS&VERSION=1.0.0&TYPENAME=states&BBOX=-122.77458907062643334,47.22724615119393832,-121.86953238113640907,47.96610480588739023&REQUEST=DescribeFeatureType

results in an error:

An error occurred: 'list' object has no attribute 'split'
  File "featureserver/web_request/handlers.py", line 147, in wsgi
    accepts = accepts )
  File "featureserver/FeatureServer/Server.py", line 222, in dispatchRequest
    return getattr(request, request.actions[0].request.lower())(version)
  File "featureserver/FeatureServer/Service/WFS.py", line 62, in describefeaturetype
    result = wfs.describefeaturetype()
  File "featureserver/vectorformats/Formats/WFS.py", line 312, in describefeaturetype
    root = self.addDataSourceFeatureType(root, self.datasources[self.layers[0]])
  File "featureserver/vectorformats/Formats/WFS.py", line 339, in addDataSourceFeatureType
    for attribut_col in datasource.attribute_cols.split(','):

The other formats (e.g. HTML, GeoJSON) work just fine with OGR. This suggests that WFS should not be attempting to parse the attributes. However, when I monkey-patch that fix, it only leads to deeper errors around OGR:getAttributeDescription not being overridden.