github: Replace Gr1N/setup-poetry with a composite action that supports caching

.github/actions/setup-poetry/action.yml

@@ -0,0 +1,58 @@
+name: Set up Poetry
+description: Install Poetry and cache its installation.
+inputs:
+  poetry-version:
+    default: 1.8.2
+runs:
+  using: composite
+  steps:
+    - name: Get Python version
+      id: get-python-version
+      run: |
+        if [ ! -d "$pythonLocation" ]; then
+          echo "You must use the setup-python action before using this action."
+          exit 1
+        fi 
+        "$pythonLocation/python" -c "import platform; print(f'python-version={platform.python_version()}')" >> "$GITHUB_OUTPUT"
+      shell: bash
+    - name: Set paths (Linux/Mac)
+      if: runner.os != 'Windows'
+      run: |
+        echo "POETRY_BIN_DIR=$HOME/.local/poetry/bin" >> "$GITHUB_ENV"
+        echo "POETRY_HOME=$HOME/.local/poetry/home" >> "$GITHUB_ENV"
+        echo "POETRY_HOME_BIN=$HOME/.local/poetry/home/bin" >> "$GITHUB_ENV"
+        echo "$HOME/.local/poetry/bin" >> "$GITHUB_PATH"
+      shell: bash
+    - name: Set paths (Windows)
+      if: runner.os == 'Windows'
+      run: |
+        Add-Content $env:GITHUB_ENV "POETRY_BIN_DIR=$HOME\.local\poetry\bin"
+        Add-Content $env:GITHUB_ENV "POETRY_HOME=$HOME\.local\poetry\home"
+        Add-Content $env:GITHUB_ENV "POETRY_HOME_BIN=$HOME\.local\poetry\home\Scripts"
+        Add-Content $env:GITHUB_PATH "$HOME\.local\poetry\bin"
+      shell: pwsh
+    - name: Copy paths from $GITHUB_ENV to $GITHUB_OUTPUT
+      id: copy-paths
+      run: |
+        echo "poetry-bin-dir=$POETRY_BIN_DIR" >> "$GITHUB_OUTPUT"
+        echo "poetry-home=$POETRY_HOME" >> "$GITHUB_OUTPUT"
+      shell: bash
+    - name: Cache poetry
+      id: cache-poetry
+      uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+      with:
+        path: |
+          ${{ steps.copy-paths.outputs.poetry-bin-dir }}/poetry*
+          ${{ steps.copy-paths.outputs.poetry-home }}          
+        key: poetry${{ inputs.poetry-version }}-${{ runner.os }}-py${{ steps.get-python-version.outputs.python-version }}
+    - name: Install Poetry
+      if: steps.cache-poetry.outputs.cache-hit != 'true'
+      run: |
+        "$pythonLocation/python" -m venv "$POETRY_HOME"
+        "$POETRY_HOME_BIN/python" -m pip install poetry==${{ inputs.poetry-version }}
+        mkdir -p "$POETRY_BIN_DIR"
+        ln -s "$POETRY_HOME_BIN/poetry"* "$POETRY_BIN_DIR/"
+      shell: bash
+    - name: Print Poetry version
+      run: poetry --version
+      shell: bash

.github/actions/setup-python/action.yml

@@ -0,0 +1,18 @@
+name: Set up Python
+description: Set up Python, using an NI-chosen default version.
+inputs:
+  python-version:
+    default: 3.11.9
+outputs:
+  python-path:
+    value: ${{ steps.setup-python.outputs.python-path }}
+  python-version:
+    value: ${{ steps.setup-python.outputs.python-version }}
+runs:
+  using: composite
+  steps:
+    - name: Set up Python
+      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      id: setup-python
+      with:
+        python-version: ${{ inputs.python-version }}

.github/workflows/check_docs.yml

@@ -4,10 +4,6 @@ on:
   workflow_call:
   workflow_dispatch:
 
-env:
-  POETRY_VERSION: 1.8.2
-  PYTHON_VERSION: 3.11.9
-
 jobs:
   check_docs:
     name: Check docs
@@ -16,14 +12,10 @@ jobs:
       - name: Check out repo
         uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v5
         id: setup-python
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
+        uses: ./.github/actions/setup-python
       - name: Set up Poetry
-        uses: Gr1N/setup-poetry@v9
-        with:
-          poetry-version: ${{ env.POETRY_VERSION }}
+        uses: ./.github/actions/setup-poetry
       - name: Check for lock changes
         run: poetry check --lock
       - name: Cache virtualenv (with docs)

.github/workflows/check_nitypes.yml

@@ -4,10 +4,6 @@ on:
   workflow_call:
   workflow_dispatch:
 
-env:
-  POETRY_VERSION: 1.8.2
-  PYTHON_VERSION: 3.11.9
-
 jobs:
   check_nitypes:
     name: Check nitypes
@@ -16,14 +12,10 @@ jobs:
       - name: Check out repo
         uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v5
         id: setup-python
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
+        uses: ./.github/actions/setup-python
       - name: Set up Poetry
-        uses: Gr1N/setup-poetry@v9
-        with:
-          poetry-version: ${{ env.POETRY_VERSION }}
+        uses: ./.github/actions/setup-poetry
       - name: Check for lock changes
         run: poetry check --lock
       - name: Cache virtualenv

.github/workflows/run_unit_tests.yml

@@ -4,9 +4,6 @@ on:
   workflow_call:
   workflow_dispatch:
 
-env:
-  POETRY_VERSION: 1.8.2
-
 jobs:
   run_unit_tests:
     name: Run unit tests
@@ -22,14 +19,12 @@ jobs:
       - name: Check out repo
         uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v5
         id: setup-python
+        uses: ./.github/actions/setup-python
         with:
           python-version: ${{ matrix.python-version }}
       - name: Set up Poetry
-        uses: Gr1N/setup-poetry@v9
-        with:
-          poetry-version: ${{ env.POETRY_VERSION }}
+        uses: ./.github/actions/setup-poetry
       - name: Cache virtualenv
         uses: actions/cache@v4
         with: