Bump Python version to 3.12

Production is actually already running on 3.12, but the CI and tools
keep using 3.10.

Centralize the Python version in .python-version, which is supported by
uv and Scalingo.

.github/workflows/ci.yml

@@ -8,9 +8,6 @@ jobs:
     env:
       DJANGO_SETTINGS_MODULE: config.settings_test
       PYTHONPATH: .
-    strategy:
-      matrix:
-        python-version: ["3.10"]
     services:
       postgres:
         image: postgres:14-alpine
@@ -22,13 +19,14 @@ jobs:
           - 5432:5432
     steps:
       - uses: actions/checkout@v3
-      - name: 🐍 Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: 🌍 Install dependencies
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v5
+      - name: Setup virtual environment
         run: |
-          pip install -r requirements.txt
+          uv venv venv
+          echo "venv/bin" >> $GITHUB_PATH
+      - name: 🌍 Install dependencies
+        run: uv pip sync requirements.txt
       - name: 📄 Copy empty .env.test to .env
         run: |
           cp .env.test .env

.gitignore

@@ -81,9 +81,6 @@ target/
 profile_default/
 ipython_config.py
 
-# pyenv
-.python-version
-
 # pipenv
 #   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
 #   However, in case of collaboration, if having platform-specific dependencies or dependencies

.python-version

@@ -0,0 +1 @@
+3.12

README.md

@@ -2,7 +2,7 @@
 
 ## Prérequis
 
-- Python 3.10
+- Python [(version)](./python-version)
 - Postgreql 14.x.
 
 ## Installer les pre-commit hooks