Add graphviz to doc requirement

dstansby · dstansby · commit 4a9d897a77d8 · 2026-03-16T20:16:36.000Z
diff --git a/pyproject.toml b/pyproject.toml
@@ -36,6 +36,7 @@ docs = [
     "rich==14.1.0",
     "griffe-fieldz==0.4.0",
     "fsspec[http]==2025.9.0",
+    "graphviz==0.21",
 ]
 
 [project.scripts]
