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.github/environment-docs.yml

@@ -4,7 +4,7 @@ channels:
   - defaults
 dependencies:
   - pip
-  - numpy >=1.15.4
+  - numpy >=1.20.3
   - scipy >=1.4.0
-  - matplotlib-base>=3.3.0
+  - matplotlib-base>=3.6.0
   - numpydoc

.github/environment-minimal.yml

@@ -4,9 +4,10 @@ channels:
   - defaults
 dependencies:
   - pip
-  - numpy ==1.15.4
+  - numpy ==1.20.3
   - scipy ==1.4.0
-  - matplotlib-base==3.3.0
+  - matplotlib-base==3.6.0
   - pytest
   - pytest-cov
   - pytest-mpl
+  - pillow==9.0.0  # needed for test compatibilty and numpy 1.20.3

.github/environment.yml

@@ -4,9 +4,9 @@ channels:
   - defaults
 dependencies:
   - pip
-  - numpy >=1.15.4
+  - numpy >=1.20.3
   - scipy >=1.4.0
-  - matplotlib-base>=3.3.0
+  - matplotlib-base>=3.6.0
   - pytest
   - pytest-cov
   - pytest-mpl

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.8", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
         channel-priority: [strict]
         envfile: [".github/environment.yml"]
         include:
@@ -30,7 +30,7 @@ jobs:
             os: ubuntu-latest
             channel-priority: flexible
           - os: ubuntu-latest
-            python-version: "3.7"
+            python-version: "3.8"
             envfile: ".github/environment-minimal.yml"
             channel-priority: "flexible"
             name: "Minimal dependencies"
@@ -76,9 +76,17 @@ jobs:
 
       - name: Run unit tests
         shell: bash -l {0}
-        run: pytest
+        run: pytest --mpl-results-path=mpl_image_results/
         working-directory: tests
 
+      - name: Upload image comparison failures if any
+        if: failure() && hashFiles('tests/mpl_image_results/**') != ''
+        uses: actions/upload-artifact@v4
+        with:
+          name: mpl-test-results-${{ runner.os }}--${{ runner.arch }}--${{ matrix.python-version }}
+          path: tests/mpl_image_results/
+          retention-days: 7
+
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v5
         with: