If we follow the usual process of creating the dev environments for rsmtool, currently things break because sphinx >=6.0 requires docutils = 0.19.0 and that is currently not supported by sphinx_rtd_theme (see issue here).

So, for now, we need to pin sphinx < 6.0 in the requirements file.

Note that this doesn't affect our conda packages since we don't include sphinx as a dependency in the recipe.