From cb6f27643c583ba098e89619cde3040c3929c1cc Mon Sep 17 00:00:00 2001
From: Brady Planden <brady.planden@gmail.com>
Date: Sun, 25 Jan 2026 20:28:04 +0000
Subject: [PATCH] infra: add `Agg` matplotlib backend env var

---
 .github/workflows/CI.yml | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index e065f28..8499022 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -99,15 +99,17 @@ jobs:
         run: |
           uv venv .test-venv
           source .test-venv/bin/activate || source .test-venv/Scripts/activate
-          
+
           # Install the wheel we built
           uv pip install dist/*.whl --reinstall
-          
+
           # Install dev dependencies from pyproject.toml using pip interface
           uv pip install --group dev --group docs --group examples
-          
+
           # Run tests directly
           pytest -v
+        env:
+          MPLBACKEND: Agg
 
       - uses: actions/upload-artifact@v5
         with: