Built matrix conditionally

.azure/azure-ci-build-pipeline.yaml

@@ -8,30 +8,29 @@ trigger:
 
 strategy:
   matrix:
-    UbuntuPython38:
+    ${{ if eq(variables['Build.Reason'], 'PullRequest') }}:
-      python.version: '3.8'
+      UbuntuPython38:
-      imageName: 'ubuntu-latest'
+        python.version: '3.8'
-      condition: eq(variables['Build.Reason'], 'PullRequest')
+        imageName: 'ubuntu-latest'
-    UbuntuPython310:
+      UbuntuPython310:
-      python.version: '3.10'
+        python.version: '3.10'
-      imageName: 'ubuntu-latest'
+        imageName: 'ubuntu-latest'
-    WindowsPython38:
+      WindowsPython38:
-      python.version: '3.8'
+        python.version: '3.8'
-      imageName: 'windows-latest'
+        imageName: 'windows-latest'
-      condition: eq(variables['Build.Reason'], 'PullRequest')
+      WindowsPython310:
-    WindowsPython310:
+        python.version: '3.10'
-      python.version: '3.10'
+        imageName: 'windows-latest'
-      imageName: 'windows-latest'
+      MacOSPython38:
-      condition: eq(variables['Build.Reason'], 'PullRequest')
+        python.version: '3.8'
-    MacOSPython38:
+        imageName: 'macOS-latest'
-      python.version: '3.8'
+      MacOSPython310:
-      imageName: 'macOS-latest'
+        python.version: '3.10'
-      condition: eq(variables['Build.Reason'], 'PullRequest')
+        imageName: 'macOS-latest'
-    MacOSPython310:
+    ${{ if not(eq(variables['Build.Reason'], 'PullRequest')) }}:
-      python.version: '3.10'
+      UbuntuPython310:
-      imageName: 'macOS-latest'
+        python.version: '3.10'
-      condition: eq(variables['Build.Reason'], 'PullRequest')
+        imageName: 'ubuntu-latest'
-      # pretty sure this does not support a 'condition' parameter but worth a try. Otherwise a more complicated solution might be warranted.
 
 pool:
   vmImage: $(imageName)