[discuss] add back deps in pyproject.toml or keep empty?

[IAlibay]

See #91

Once we have gufe optional, do we add them back in? Does it impact any existing legacy users?

[mikemhenry]

I think if we want to distribute the package on pypi (as well as conda-forge) having the deps listed makes sense, but only if pip installing from pypi gives a user a working package.