Separate DeepSD and analysis dependencies from install requirements (#267)

Author: Max Jones

requirements.txt

@@ -17,8 +17,6 @@ regionmask
 scikit-downscale >= 0.1.2
 scikit-learn
 scipy
-tensorflow
-tensorflow-io
 universal-pathlib >= 0.0.12
 xarray >= 2022.3.0
 xarray-datatree == 0.0.6

setup.py

@@ -27,6 +27,10 @@
     include_package_data=True,
     python_requires=PYTHON_REQUIRES,
     install_requires=INSTALL_REQUIRES,
+    extras_require={
+        "deepsd": ["tensorflow", "tensorflow-io"],
+        "analysis": ["cartopy", "seaborn", "carbonplan[styles]"],
+    },
     license="MIT",
     keywords="carbon, data, climate",
     use_scm_version={"version_scheme": "post-release", "local_scheme": "dirty-tag"},