Gentoo issue: https://bugs.gentoo.org/934950
Switch to use tomli instead of toml
diff '--color=auto' -Naur a/docs/conf.py b/docs/conf.py
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -3,13 +3,14 @@
 import os
 import subprocess
 
-import toml
+import tomli
 
 import sphinxcontrib.katex as katex
 
 
 # -- GENERAL -------------------------------------------------------------
-config = toml.load(os.path.join("..", "pyproject.toml"))
+with open("../pyproject.toml", "rb") as f:
+    config = tomli.load(f)
 
 project = config["project"]["name"]
 author = ", ".join(author["name"] for author in config["project"]["authors"])