Merge pull request #490 from per1234/python-versioning-source

Use `pyproject.toml` as Python version source

Author: per1234

.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/using-workflows/events-that-trigger-workflows
 on:
   create:
@@ -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: pip install poetry
@@ -99,7 +95,7 @@ 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/using-workflows/events-that-trigger-workflows
 on:
   create:
@@ -98,7 +94,7 @@ 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/using-workflows/events-that-trigger-workflows
 on:
   create:
@@ -52,7 +48,7 @@ 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

@@ -189,6 +189,7 @@ The following development tools must be available in your local environment:
 - [**Task**](https://taskfile.dev/installation/)
 - [**Node.js**](https://nodejs.dev/en/download/)
 - [**Python**](https://www.python.org/downloads/)
+  - The **Python** version in use is defined in the `tool.poetry.dependencies` field of [`pyproject.toml`](../pyproject.toml).
 - [**Poetry**](https://python-poetry.org/docs/#installation)
 
 ### Running Checks