KeyError: 'projection' when building fresh envs with geoviews

ALL software version info

bokeh 2.0.0 holoviews 1.13.1rc1 geoviews 1.7.0a3

Description of expected behavior and the observed behavior

Over the past week, I can’t seem to build an environment with geoviews that will successfully display maps with tile services. I just built a fresh conda env from this environment.yaml:

channels:
  - pyviz/label/dev
  - defaults
  - conda-forge

dependencies:
  # defaults
  - python=3.8

  # pyviz/label/dev
  - pyviz/label/dev::holoviews
  - pyviz/label/dev::param
  - pyviz/label/dev::geoviews
  - pyviz/label/dev::panel

And it will fail to render the code below. I imagine it has to do with the older geoviews version, but I have conflicts with the more recent release. Any ideas on why? Or a workaround?

Complete, minimal, self-contained example code that reproduces the issue

from shapely.geometry import Polygon
import geoviews as gv
import geoviews.tile_sources as gvts

gvts.OSM * gv.Polygons(Polygon([[0,0],[0,1],[1,1]]))

Stack traceback and/or browser JavaScript console output

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/IPython/core/formatters.py in __call__(self, obj, include, exclude)
    968 
    969             if method is not None:
--> 970                 return method(include=include, exclude=exclude)
    971             return None
    972         else:

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/core/dimension.py in _repr_mimebundle_(self, include, exclude)
   1302         combined and returned.
   1303         """
-> 1304         return Store.render(self)
   1305 
   1306 

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/core/options.py in render(cls, obj)
   1393         data, metadata = {}, {}
   1394         for hook in hooks:
-> 1395             ret = hook(obj)
   1396             if ret is None:
   1397                 continue

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/ipython/display_hooks.py in pprint_display(obj)
    280     if not ip.display_formatter.formatters['text/plain'].pprint:
    281         return None
--> 282     return display(obj, raw_output=True)
    283 
    284 

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/ipython/display_hooks.py in display(obj, raw_output, **kwargs)
    250     elif isinstance(obj, (CompositeOverlay, ViewableElement)):
    251         with option_state(obj):
--> 252             output = element_display(obj)
    253     elif isinstance(obj, (Layout, NdLayout, AdjointLayout)):
    254         with option_state(obj):

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/ipython/display_hooks.py in wrapped(element)
    144         try:
    145             max_frames = OutputSettings.options['max_frames']
--> 146             mimebundle = fn(element, max_frames=max_frames)
    147             if mimebundle is None:
    148                 return {}, {}

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/ipython/display_hooks.py in element_display(element, max_frames)
    190         return None
    191 
--> 192     return render(element)
    193 
    194 

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/ipython/display_hooks.py in render(obj, **kwargs)
     66         renderer = renderer.instance(fig='png')
     67 
---> 68     return renderer.components(obj, **kwargs)
     69 
     70 

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/plotting/renderer.py in components(self, obj, fmt, comm, **kwargs)
    363             doc = Document()
    364             with config.set(embed=embed):
--> 365                 model = plot.layout._render_model(doc, comm)
    366             return render_model(model, comm) if embed else render_mimebundle(model, doc, comm)
    367         else:

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/panel/viewable.py in _render_model(self, doc, comm)
    363         if comm is None:
    364             comm = state._comm_manager.get_server_comm()
--> 365         model = self.get_root(doc, comm)
    366 
    367         if config.embed:

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/panel/viewable.py in get_root(self, doc, comm)
    534         """
    535         doc = doc or _curdoc()
--> 536         root = self._get_model(doc, comm=comm)
    537         self._preprocess(root)
    538         ref = root.ref['id']

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/panel/layout.py in _get_model(self, doc, root, parent, comm)
    134         if root is None:
    135             root = model
--> 136         objects = self._get_objects(model, [], doc, root, comm)
    137         props = dict(self._init_properties(), objects=objects)
    138         model.update(**self._process_param_change(props))

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/panel/layout.py in _get_objects(self, model, old_objects, doc, root, comm)
    124             else:
    125                 try:
--> 126                     child = pane._get_model(doc, root, model, comm)
    127                 except RerenderError:
    128                     return self._get_objects(model, current_objects[:i], doc, root, comm)

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/panel/pane/holoviews.py in _get_model(self, doc, root, parent, comm)
    225             plot = self.object
    226         else:
--> 227             plot = self._render(doc, comm, root)
    228 
    229         plot.pane = self

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/panel/pane/holoviews.py in _render(self, doc, comm, root)
    284             kwargs = {}
    285 
--> 286         return renderer.get_plot(self.object, **kwargs)
    287 
    288     def _cleanup(self, root):

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/plotting/bokeh/renderer.py in get_plot(self_or_cls, obj, doc, renderer, **kwargs)
     71         combining the bokeh model with another plot.
     72         """
---> 73         plot = super(BokehRenderer, self_or_cls).get_plot(obj, doc, renderer, **kwargs)
     74         if plot.document is None:
     75             plot.document = Document() if self_or_cls.notebook_context else curdoc()

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/plotting/renderer.py in get_plot(self_or_cls, obj, doc, renderer, comm, **kwargs)
    216             if isinstance(obj, AdjointLayout):
    217                 obj = Layout(obj)
--> 218             plot = self_or_cls.plotting_class(obj)(obj, renderer=renderer,
    219                                                    **plot_opts)
    220             defaults = [kd.default for kd in plot.dimensions]

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/geoviews/plotting/bokeh/plot.py in __init__(self, element, **params)
    176 
    177     def __init__(self, element, **params):
--> 178         super(GeoOverlayPlot, self).__init__(element, **params)
    179         self.geographic = any(element.traverse(is_geographic, [_Element]))
    180         if self.geographic:

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/geoviews/plotting/bokeh/plot.py in __init__(self, element, **params)
     58 
     59     def __init__(self, element, **params):
---> 60         super(GeoPlot, self).__init__(element, **params)
     61         self.geographic = is_geographic(self.hmap.last)
     62         if self.geographic and not isinstance(self.projection, (PlateCarree, Mercator)):

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/holoviews/plotting/plot.py in __init__(self, overlay, ranges, batched, keys, group_counter, **params)
   1449     def __init__(self, overlay, ranges=None, batched=True, keys=None, group_counter=None, **params):
   1450         if 'projection' not in params:
-> 1451             params['projection'] = self._get_projection(overlay)
   1452 
   1453         super(GenericOverlayPlot, self).__init__(overlay, ranges=ranges, keys=keys,

//miniconda3/envs/lsb_stripped/lib/python3.8/site-packages/geoviews/plotting/plot.py in _get_projection(self, obj)
     34                                       [CompositeOverlay, Element],
     35                                       keyfn=isoverlay, defaults=False)
---> 36         from_overlay = not all(p is None for p in opts[True]['projection'])
     37         projections = opts[from_overlay]['projection']
     38         infer = any(opts[from_overlay]['infer_projection']) or self.infer_projection

KeyError: 'projection'

:Overlay
   .WMTS.I     :WMTS   [Longitude,Latitude]
   .Polygons.I :Polygons   [Longitude,Latitude]

Screenshots or screencasts of the bug in action

[philippjfr]

Thanks! Hoping to get the 1.7.0 release (with HoloViews>1.13 and Bokeh<2.0 support) and 1.8.0 release with (with HoloViews>1.13 and Bokeh>=2.0 support) out tonight.

[philippjfr]

You’ll need GeoViews 1.8.0 or GeoViews 1.8.1.