Update main.yml

Author: fkiraly

.github/workflows/main.yml

@@ -52,7 +52,7 @@ jobs:
 
   test-nosoftdeps:
     needs: code-quality
-    name: test-nosoftdeps (${{ matrix.python-version }}, ${{ matrix.os }})
+    name: nosoftdeps (${{ matrix.python-version }}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -94,11 +94,13 @@ jobs:
     needs: test-nosoftdeps
     name: test-full (${{ matrix.python-version }}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
+    env:
+      MPLBACKEND: Agg # https://github.com/orgs/community/discussions/26434
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
         os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
       - uses: actions/checkout@v6
@@ -135,6 +137,8 @@ jobs:
     name: coverage
     needs: code-quality
     runs-on: "ubuntu-latest"
+    env:
+      MPLBACKEND: Agg # https://github.com/orgs/community/discussions/26434
     steps:
       - uses: actions/checkout@v6