Install graphviz in doc build

dstansby · dstansby · commit c27c089e4990 · 2023-06-15T10:05:29.000+01:00
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
@@ -22,6 +22,8 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           python -m pip install ".[docs]"
+          sudo apt install graphviz --yes
+
       - name: Build Docs
         uses: aganders3/headless-gui@v1
         with:
