GHA: another attempt to run tests sequentially

.github/workflows/centos.yml

-name: Centos containers
-
-on:
-  workflow_run:
-    workflows:
-      - "Ubuntu 3.8"
-    types:
-      - completed
-  # Allow to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  build:
-
-    if: (github.event_name == 'workflow_dispatch') || ((github.event_name == 'workflow_run') && (github.event.workflow_run.conclusion == 'success'))
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: ["2.7", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Test in container with Python ${{ matrix.python-version }}
-      env:
-        PYTHON_VER: ${{matrix.python-version}}
-        BUILD_TYPE: centos_containers
-      run: |
-        ./ci_build.sh

.github/workflows/debian-sys.yml

-name: Debian container with system Python
-
-on:
-  workflow_run:
-    workflows:
-      - "Ubuntu 3.8"
-    types:
-      - completed
-  # Allow to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  build:
-
-    if: (github.event_name == 'workflow_dispatch') || ((github.event_name == 'workflow_run') && (github.event.workflow_run.conclusion == 'success'))
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: ["3.9"]
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Test in container with system Python
-      env:
-        BUILD_TYPE: debian_sys_container
-      run: |
-        ./ci_build.sh

.github/workflows/debian.yml

-name: Debian containers
-
-on:
-  workflow_run:
-    workflows:
-      - "Ubuntu 3.8"
-    types:
-      - completed
-  # Allow to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  build:
-
-    if: (github.event_name == 'workflow_dispatch') || ((github.event_name == 'workflow_run') && (github.event.workflow_run.conclusion == 'success'))
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: ["2.7", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Test in container with Python ${{ matrix.python-version }}
-      env:
-        PYTHON_VER: ${{matrix.python-version}}
-        BUILD_TYPE: debian_containers
-      run: |
-        ./ci_build.sh

.github/workflows/python-runners.yml

-name: Ubuntu, MacOS, Windows machines
-
-on:
-  workflow_run:
-    workflows:
-      - "Ubuntu 3.8"
-    types:
-      - completed
-  # Allow to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  build:
-
-    runs-on: ${{ matrix.os }}
-    if: (github.event_name == 'workflow_dispatch') || ((github.event_name == 'workflow_run') && (github.event.workflow_run.conclusion == 'success'))
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["2.7", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
-        exclude:
-          # excludes 2.7 on windows as chocolatey does not support it anymore
-          - os: windows-latest
-            python-version: 2.7
-          # excludes 3.11 on macos as long as I cannot understand how to fix it
-          - os: macos-latest
-            python-version: 3.11
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Cache eggs
-      uses: actions/cache@v3
-      with:
-        path: eggs
-        key: ${{ matrix.os }}-${{ matrix.python-version }}-eggs
-    - name: Run tests
-      env:
-        TMPDIR: ${{ env.HOME }}/AppData/Local/Temp
-        TMP: ${{ env.HOME }}/AppData/Local/Temp
-        TEMP: ${{ env.HOME }}/AppData/Local/Temp
-        BUILD_TYPE: bare_machines
-      run: |
-        echo $TMPDIR
-        ./ci_build.sh

.github/workflows/run-tests.yml

+name: Run tests
+
+on:
+  push:
+    paths-ignore:
+      - '.circleci/**'
+  pull_request:
+  # Allow to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  ubuntu-3_8:
+    name: tests on Ubuntu - Python 3.8
+    runs-on: ${{ matrix.os }}
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        python-version: ["3.8"]
+        exclude:
+          # excludes 2.7 on windows as chocolatey does not support it anymore
+          - os: windows-latest
+            python-version: 2.7
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Cache eggs
+      uses: actions/cache@v3
+      with:
+        path: eggs
+        key: ${{ matrix.os }}-${{ matrix.python-version }}-eggs
+    - name: Run tests
+      env:
+        TMPDIR: ${{ env.HOME }}/AppData/Local/Temp
+        TMP: ${{ env.HOME }}/AppData/Local/Temp
+        TEMP: ${{ env.HOME }}/AppData/Local/Temp
+        BUILD_TYPE: bare_machines
+      run: |
+        echo $TMPDIR
+        ./ci_build.sh
+  generate-scripts:
+    needs: ubuntu-3_8
+    name: Generate scripts - Python ${{ matrix.python-version }}
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+        package: [zest.releaser, pyspf]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Setup buildout virtualenv
+      run: |
+        make -f .github/workflows/Makefile-scripts sandbox/bin/buildout
+    - name: Run buildout
+      env:
+        PACKAGE: ${{matrix.package}}
+        PYTHON_VERSION: ${{matrix.python-version}}
+      run: |
+        sandbox/bin/buildout -v -c .github/workflows/scripts-${PYTHON_VERSION}.cfg annotate buildout
+        sandbox/bin/buildout -c .github/workflows/scripts-${PYTHON_VERSION}.cfg
+    - name: Check eggs
+      run: |
+        ls -al sandbox/eggs
+        ls -al sandbox/downloads/dist
+  python-runners:
+    needs: generate-scripts
+    name: tests on ${{ matrix.os }} machine - Python ${{ matrix.python-version }}
+    runs-on: ${{ matrix.os }}
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ["2.7", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+        exclude:
+          # excludes 2.7 on windows as chocolatey does not support it anymore
+          - os: windows-latest
+            python-version: 2.7
+          # excludes 3.11 on macos as long as I cannot understand how to fix it
+          - os: macos-latest
+            python-version: 3.11
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Cache eggs
+      uses: actions/cache@v3
+      with:
+        path: eggs
+        key: ${{ matrix.os }}-${{ matrix.python-version }}-eggs
+    - name: Run tests
+      env:
+        TMPDIR: ${{ env.HOME }}/AppData/Local/Temp
+        TMP: ${{ env.HOME }}/AppData/Local/Temp
+        TEMP: ${{ env.HOME }}/AppData/Local/Temp
+        BUILD_TYPE: bare_machines
+      run: |
+        echo $TMPDIR
+        ./ci_build.sh
+  debian-containers:
+    needs: python-runners
+    name: tests in Debian container - Python ${{ matrix.python-version }}
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["2.7", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Test in container with Python ${{ matrix.python-version }}
+      env:
+        PYTHON_VER: ${{matrix.python-version}}
+        BUILD_TYPE: debian_containers
+      run: |
+        ./ci_build.sh
+  centos-containers:
+    needs: python-runners
+    name: Tests in CentOS container - Python ${{ matrix.python-version }}
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["2.7", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Test in container with Python ${{ matrix.python-version }}
+      env:
+        PYTHON_VER: ${{matrix.python-version}}
+        BUILD_TYPE: centos_containers
+      run: |
+        ./ci_build.sh
+  debian-system:
+    needs: python-runners
+    name: tests in Debian with system Python
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9"]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Test in container with system Python
+      env:
+        BUILD_TYPE: debian_sys_container
+      run: |
+        ./ci_build.sh

.github/workflows/scripts.yml

-name: Script generation
-
-on:
-  workflow_run:
-    workflows:
-      - "Ubuntu 3.8"
-    types:
-      - completed
-  # Allow to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  build:
-
-    if: (github.event_name == 'workflow_dispatch') || ((github.event_name == 'workflow_run') && (github.event.workflow_run.conclusion == 'success'))
-    runs-on: ubuntu-latest
-    strategy:
-      max-parallel: 4
-      matrix:
-        python-version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
-        package: [zest.releaser, pyspf]
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Setup buildout virtualenv
-      run: |
-        make -f .github/workflows/Makefile-scripts sandbox/bin/buildout
-    - name: Run buildout
-      env:
-        PACKAGE: ${{matrix.package}}
-        PYTHON_VERSION: ${{matrix.python-version}}
-      run: |
-        sandbox/bin/buildout -v -c .github/workflows/scripts-${PYTHON_VERSION}.cfg annotate buildout
-        sandbox/bin/buildout -c .github/workflows/scripts-${PYTHON_VERSION}.cfg
-    - name: Check eggs
-      run: |
-        ls -al sandbox/eggs
-        ls -al sandbox/downloads/dist

.github/workflows/ubuntu-default.yml

-name: Ubuntu 3.8
-
-on:
-  push:
-    paths-ignore:
-      - '.circleci/**'
-  pull_request:
-  # Allow to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  build:
-
-    runs-on: ${{ matrix.os }}
-    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest]
-        python-version: ["3.8"]
-        exclude:
-          # excludes 2.7 on windows as chocolatey does not support it anymore
-          - os: windows-latest
-            python-version: 2.7
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Cache eggs
-      uses: actions/cache@v3
-      with:
-        path: eggs
-        key: ${{ matrix.os }}-${{ matrix.python-version }}-eggs
-    - name: Run tests
-      env:
-        TMPDIR: ${{ env.HOME }}/AppData/Local/Temp
-        TMP: ${{ env.HOME }}/AppData/Local/Temp
-        TEMP: ${{ env.HOME }}/AppData/Local/Temp
-        BUILD_TYPE: bare_machines
-      run: |
-        echo $TMPDIR
-        ./ci_build.sh