first step for CI to analyse PR

.github/workflows/pr_analysis.yml

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+# documentation: https://help.github.com/en/articles/workflow-syntax-for-github-actions
+name: Analysis of a pull request
+on: [push, pull_request, workflow_dispatch]
+permissions:
+  contents: read # to fetch code (actions/checkout)
+jobs:
+  pilot:
+    runs-on: ubuntu-20.04
+    strategy:
+      fail-fast: false
+      matrix:
+        EESSI_VERSION:
+        - 2023.06
+        EESSI_SOFTWARE_SUBDIR:
+        - x86_64/generic
+        # - aarch64/generic
+        # - x86_64/amd/zen2
+        # - x86_64/intel/broadwell
+        # - x86_64/intel/cascadelake
+        # - x86_64/intel/skylake_avx512
+        EASYSTACK_FILE:
+        # - eessi-2023.06-eb-4.7.2-2021a.yml
+        # - eessi-2023.06-eb-4.7.2-2021b.yml
+        # - eessi-2023.06-eb-4.7.2-2022a.yml
+        # - eessi-2023.06-eb-4.7.2-2022b.yml
+        # - eessi-2023.06-eb-4.7.2-system.yml
+        # - eessi-2023.06-eb-4.8.0-system.yml
+        - eessi-2023.06-eb-4.8.1-2022a.yml
+        # - eessi-2023.06-eb-4.8.1-system.yml
+        python: [3.7] # ScanCode-Toolkit requires Python 3.7 or newer
+    steps:
+        - name: Install dependencies for ScanCode-Toolkit
+          run: |
+              sudo apt install python-dev bzip2 xz-utils zlib1g libxml2-dev libxslt1-dev libpopt0
+
+        - name: set up Python
+          uses: actions/setup-python@13ae5bb136fac2878aff31522b9efb785519f984 # v4.3.0
+          with:
+            python-version: ${{matrix.python}}
+            architecture: x64
+
+        - name: upgrade base tools
+          run: |
+              pip install --user --upgrade pip setuptools wheel
+
+        - name: Install ScanCode-Toolkit
+          run: |
+              pip install --user scancode-toolkit
+
+#        - name: Check out software-layer repository
+#          uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0
+#
+#        - name: Mount EESSI CernVM-FS pilot repository
+#          uses: cvmfs-contrib/github-action-cvmfs@d4641d0d591c9a5c3be23835ced2fb648b44c04b # v3.1
+#          with:
+#              cvmfs_config_package: https://github.com/NorESSI/filesystem-layer/releases/download/latest/cvmfs-config-nessi_latest_all.deb
+#              cvmfs_http_proxy: DIRECT
+#              cvmfs_repositories: pilot.nessi.no
+#
+#        - name: Test check_missing_installations.sh script with EESSI_SOFTWARE_SUBDIR_OVERRIDE
+#          if: '!cancelled()'
+#          run: |
+#              export EESSI_SOFTWARE_SUBDIR_OVERRIDE=${{matrix.EESSI_SOFTWARE_SUBDIR}}
+#              source /cvmfs/pilot.nessi.no/versions/${{matrix.EESSI_VERSION}}/init/bash
+#              module load EasyBuild
+#              eb --version
+#              export EESSI_PREFIX=/cvmfs/pilot.nessi.no/versions/${{matrix.EESSI_VERSION}}
+#              export EESSI_OS_TYPE=linux
+#              env | grep ^EESSI | sort
+#              echo "just run check_missing_installations.sh (should use ${{matrix.EASYSTACK_FILE}})"
+#              ./check_missing_installations.sh ${{matrix.EASYSTACK_FILE}}
+#
+#        - name: Test check_missing_installations.sh script without EESSI_SOFTWARE_SUBDIR_OVERRIDE
+#          if: '!cancelled()'
+#          run: |
+#              source /cvmfs/pilot.nessi.no/versions/${{matrix.EESSI_VERSION}}/init/bash
+#              module load EasyBuild
+#              eb --version
+#              export EESSI_PREFIX=/cvmfs/pilot.nessi.no/versions/${{matrix.EESSI_VERSION}}
+#              export EESSI_OS_TYPE=linux
+#              export EESSI_SOFTWARE_SUBDIR=${{matrix.EESSI_SOFTWARE_SUBDIR}}
+#              env | grep ^EESSI | sort
+#              echo "just run check_missing_installations.sh (should use ${{matrix.EASYSTACK_FILE}})"
+#              ./check_missing_installations.sh ${{matrix.EASYSTACK_FILE}}