Use pyproject.toml as Python version source

.github/workflows/check-python-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-python-task.md
 name: Check Python
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -73,7 +69,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
@@ -104,7 +100,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

.github/workflows/check-yaml-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-yaml-task.md
 name: Check YAML
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -101,7 +97,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

.github/workflows/spell-check-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/spell-check-task.md
 name: Spell Check
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -55,7 +51,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

.github/workflows/test-python-poetry-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/test-python-poetry-task.md
 name: Test Python
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -69,7 +65,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

docs/development.md

@@ -9,8 +9,7 @@ The following development tools must be available in your local environment:
 - [**Node.js** / **npm**](https://nodejs.org/en/download/) - Node.js dependencies management tool
   - The **Node.js** version in use is defined by the `engines.node` key of [`package.json`](../package.json).
 - [**Python**](https://wiki.python.org/moin/BeginnersGuide/Download)
-  - <!-- PYTHON_VERSION -->
-    This project uses Python 3.9.x
+  - The **Python** version in use is defined by the `tool.poetry.dependencies.python` key of [`pyproject.toml`](../pyproject.toml).
 - [**Poetry**](https://python-poetry.org/docs/#installation) - Python dependencies management tool
 - [**Task**](https://taskfile.dev/installation/) - task runner tool
 

pyproject.toml

@@ -8,7 +8,7 @@ description = ""
 authors = ["Arduino <info@arduino.cc>"]
 
 [tool.poetry.dependencies]
-python = "^3.9"
+python = "~3.9"
 
 [tool.poetry.dev-dependencies]
 yamllint = "^v1.37.1"

workflow-templates/check-mkdocs-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-mkdocs-task.md
 name: Check Website
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -69,7 +65,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

workflow-templates/check-python-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-python-task.md
 name: Check Python
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -73,7 +69,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
@@ -104,7 +100,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

workflow-templates/check-yaml-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-yaml-task.md
 name: Check YAML
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -101,7 +97,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

workflow-templates/deploy-cobra-mkdocs-versioned-poetry.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/deploy-cobra-mkdocs-versioned-poetry.md
 name: Deploy Website
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 on:
   push:
     branches:
@@ -70,7 +66,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: |

workflow-templates/deploy-mkdocs-poetry.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/deploy-mkdocs-poetry.md
 name: Deploy Website
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   push:
@@ -33,7 +29,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

workflow-templates/deploy-mkdocs-versioned-poetry.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/deploy-mkdocs-versioned-poetry.md
 name: Deploy Website
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 on:
   push:
     branches:
@@ -60,7 +56,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: |

workflow-templates/spell-check-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/spell-check-task.md
 name: Spell Check
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -55,7 +51,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

workflow-templates/test-go-integration-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/test-go-integration-task.md
 name: Test Integration
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -86,7 +82,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry

workflow-templates/test-python-poetry-task.yml

@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/test-python-poetry-task.md
 name: Test Python
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -69,7 +65,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry