docs: docs can be built on python 3.10

Author: henryborchers

docs/source/conf.py

@@ -19,13 +19,17 @@
 #
 import os
 import sys
-import tomllib
+if sys.version_info < (3, 11):
+    from tomli import load as load_toml
+else:
+    from tomllib import load as load_toml
+
 
 sys.path.insert(0, os.path.abspath('../..'))
 def get_project_metadata():
     path = os.path.abspath(os.path.join(os.path.dirname(__file__), "../../pyproject.toml"))
     with open(path, "rb") as f:
-        return tomllib.load(f)['project']
+        return load_toml(f)['project']
 
 metadata = get_project_metadata()
 

pyproject.toml

@@ -23,7 +23,7 @@ classifiers = [
 ]
 
 [dependency-groups]
-docs = ["sphinx"]
+docs = ["sphinx", "tomli ; python_full_version < '3.11'"]
 type_checking = [
     "mypy",
     "lxml",