HTML repr error

[tomwhite]

From xarray-contrib/flox#356.

Running the getting started example in a notebook gives:

---------------------------------------------------------------------------
TemplateNotFound                          Traceback (most recent call last)
File ~/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/cubed/vendor/dask/widgets/widgets.py:40, in get_template(name)
     39 try:
---> 40     return get_environment().get_template(name)
     41 except TemplateNotFound as e:

File ~/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/jinja2/environment.py:1010, in Environment.get_template(self, name, parent, globals)
   1008     name = self.join_path(name, parent)
-> 1010 return self._load_template(name, globals)

File ~/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/jinja2/environment.py:969, in Environment._load_template(self, name, globals)
    967         return template
--> 969 template = self.loader.load(self, name, self.make_globals(globals))
    971 if self.cache is not None:

File ~/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/jinja2/loaders.py:125, in BaseLoader.load(self, environment, name, globals)
    123 # first we try to get the source for this template together
    124 # with the filename and the uptodate function.
--> 125 source, filename, uptodate = self.get_source(environment, name)
    127 # try to load the code from the bytecode cache if there is a
    128 # bytecode cache configured.

File ~/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/jinja2/loaders.py:204, in FileSystemLoader.get_source(self, environment, template)
    203 else:
--> 204     raise TemplateNotFound(template)
    206 with open(filename, encoding=self.encoding) as f:

TemplateNotFound: array.html.j2

The above exception was the direct cause of the following exception:

TemplateNotFound                          Traceback (most recent call last)
File ~/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/IPython/core/formatters.py:344, in BaseFormatter.__call__(self, obj)
    342     method = get_real_method(obj, self.print_method)
    343     if method is not None:
--> 344         return method()
    345     return None
    346 else:

File ~/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/cubed/array_api/array_object.py:63, in Array._repr_html_(self)
     60     nbytes = "unknown"
     61     cbytes = "unknown"
---> 63 return get_template("array.html.j2").render(
     64     array=self,
     65     grid=grid,
     66     nbytes=nbytes,
     67     cbytes=cbytes,
     68     arrs_in_plan=f"{self.plan.num_arrays()} arrays in Plan",
     69     arrtype="np.ndarray",
     70 )

File ~/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/cubed/vendor/dask/widgets/widgets.py:42, in get_template(name)
     40     return get_environment().get_template(name)
     41 except TemplateNotFound as e:
---> 42     raise TemplateNotFound(
     43         f"Unable to find {name} in dask.widgets.TEMPLATE_PATHS {TEMPLATE_PATHS}"
     44     ) from e

TemplateNotFound: Unable to find array.html.j2 in dask.widgets.TEMPLATE_PATHS ['/Users/tom/miniconda3/envs/cubed-test-install/lib/python3.9/site-packages/cubed/vendor/dask/widgets/templates']

It looks like array.html.j2 is not present in the installed package.