Fix JB2 in CI

Install JB2

Author: zmoon

.github/workflows/deploy.yml

@@ -19,22 +19,27 @@ jobs:
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
+    defaults:
+      run:
+        shell: bash -leo pipefail {0}
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
 
       - name: Set up Pages
         uses: actions/configure-pages@v5
 
-      - name: Set up Python
+      - name: Set up conda env
         uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: environment.yml
           cache-environment: true
 
+      - name: Install JB2
+        run: python -m pip install -U --pre "jupyter-book==2.*" --no-deps -v
+
       - name: Build HTML
-        run: jupyter-book build --html --execute --strict --ci
-        shell: micromamba-shell {0}
+        run: jupyter book build --html --execute --strict --ci
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v4

03-viz.ipynb

@@ -15,6 +15,8 @@
     "title: Viz\n",
     "subtitle: Visualizing native-grid output in Python\n",
     "label: page:viz\n",
+    "kernelspec:\n",
+    "  name: python3\n",
     "---"
    ]
   },