Merged PR 114: Change build pipeline to only run once on commits

## Summary
Unfortunately, I had to do away with the nice and neat matrix strategy for builds, because they do not support conditionals. Instead, I manually replicated the behaviour of the matrix but added a conditional to run every platform only when the 'build reason' is PR.

## Test process
*How have you tested this (if applicable)?*

## Checklist
- [x] This PR is linked to a **work item**
- [x] I have performed **self-review** of the code
- [ ] I have written **tests** for any new functionality added with this PR
- [ ] I have updated the **documentation** if this PR changes or adds functionality
- [x] I have run **pre-commit** checks for code style

Related work items: #1603

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

@@ -6,69 +6,85 @@ trigger:
 - bugfix/*
 - release/*
 
-strategy:
+parameters:
-  matrix:
+  # https://stackoverflow.com/a/70046417
-    UbuntuPython38:
+  - name: matrix
-      python.version: '3.8'
+    type: object
-      imageName: 'ubuntu-latest'
+    default:
-    UbuntuPython310:
+    - job_name: 'UbuntuPython38'
-      python.version: '3.10'
+      py: '3.8'
-      imageName: 'ubuntu-latest'
+      img: 'ubuntu-latest'
-    WindowsPython38:
+      every_time: false
-      python.version: '3.8'
+    - job_name: 'UbuntuPython310'
-      imageName: 'windows-latest'
+      py: '3.10'
-    WindowsPython310:
+      img: 'ubuntu-latest'
-      python.version: '3.10'
+      every_time: true
-      imageName: 'windows-latest'
+    - job_name: 'WindowsPython38'
-    MacOSPython38:
+      py: '3.8'
-      python.version: '3.8'
+      img: 'windows-latest'
-      imageName: 'macOS-latest'
+      every_time: false
-    MacOSPython310:
+    - job_name: 'WindowsPython310'
-      python.version: '3.10'
+      py: '3.10'
-      imageName: 'macOS-latest'
+      img: 'windows-latest'
+      every_time: false
+    - job_name: 'MacOSPython38'
+      py: '3.8'
+      img: 'macOS-latest'
+      every_time: false
+    - job_name: 'MacOSPython310'
+      py: '3.10'
+      img: 'macOS-latest'
+      every_time: false
 
-pool:
+stages:
-  vmImage: $(imageName)
+  - stage: Test
+    jobs:
+    - ${{ each item in parameters.matrix }}:
+      - job: ${{ item.job_name }}
+        pool:
+          vmImage: ${{ item.img }}
 
-steps:
+        condition: or( eq(variables['Build.Reason'], 'PullRequest'), ${{ item.every_time }} )
-- task: UsePythonVersion@0
-  inputs:
-    versionSpec: '$(python.version)'
-  displayName: 'Use Python $(python.version)'
 
-- script: |
+        steps:
-    python -m pip install pre-commit
+          - task: UsePythonVersion@0
-    pre-commit install
+            inputs:
-    pre-commit run --all-files
+              versionSpec: ${{ item.py }}
-  displayName: 'Run pre-commits'
+            displayName: 'Use Python ${{ item.py }}'
 
-- script: |
+          - script: |
-    python -m pip install --upgrade pip==23.0.1
+              python -m pip install pre-commit
-    pip install wheel==0.38.4 --upgrade
+              pre-commit install
-    pip install setuptools==66 --upgrade
+              pre-commit run --all-files
-    pip install build==0.10.0
+            displayName: 'Run pre-commits'
-    pip install pytest-azurepipelines
-  displayName: 'Install build dependencies'
 
-- script: |
+          - script: |
-    python -m build
+              python -m pip install --upgrade pip==23.0.1
-  displayName: 'Build PrimAITE'
+              pip install wheel==0.38.4 --upgrade
+              pip install setuptools==66 --upgrade
+              pip install build==0.10.0
+              pip install pytest-azurepipelines
+            displayName: 'Install build dependencies'
 
-- script: |
+          - script: |
-    PRIMAITE_WHEEL=$(ls ./dist/primaite*.whl)
+              python -m build
-    python -m pip install $PRIMAITE_WHEEL[dev]
+            displayName: 'Build PrimAITE'
-  displayName: 'Install PrimAITE'
-  condition: or(eq( variables['Agent.OS'], 'Linux' ), eq( variables['Agent.OS'], 'Darwin' ))
 
-- script: |
+          - script: |
-    forfiles /p dist\ /m *.whl /c "cmd /c python -m pip install @file[dev]"
+              PRIMAITE_WHEEL=$(ls ./dist/primaite*.whl)
-  displayName: 'Install PrimAITE'
+              python -m pip install $PRIMAITE_WHEEL[dev]
-  condition: eq( variables['Agent.OS'], 'Windows_NT' )
+            displayName: 'Install PrimAITE'
+            condition: or(eq( variables['Agent.OS'], 'Linux' ), eq( variables['Agent.OS'], 'Darwin' ))
 
-- script: |
+          - script: |
-    primaite setup
+              forfiles /p dist\ /m *.whl /c "cmd /c python -m pip install @file[dev]"
-  displayName: 'Perform PrimAITE Setup'
+            displayName: 'Install PrimAITE'
+            condition: eq( variables['Agent.OS'], 'Windows_NT' )
 
-- script: |
+          - script: |
-    pytest tests/
+              primaite setup
-  displayName: 'Run tests'
+            displayName: 'Perform PrimAITE Setup'
+
+          - script: |
+              pytest tests/
+            displayName: 'Run tests'