include nbformat as a plotly[express] dependency

afeld · afeld · commit 69661f6bdcf9 · 2025-10-16T17:13:59.000-04:00
Required for MimeType rendering.
diff --git a/pyproject.toml b/pyproject.toml
@@ -39,7 +39,10 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-express = ["numpy"]
+express = [
+    "numpy",
+    "nbformat>=4.2.0"
+]
 kaleido = ["kaleido>=1.0.0"]
 dev_core = [
     "pytest",
