🏗️(core) migrate from pip to uv

We want to migrate our projects from pip to uv to take the benefits of
the lock file and have reproducible installations.
A first uv.lock file is comitted and the Dockerfile and compose are
modified to work with uv

CHANGELOG.md

@@ -12,6 +12,10 @@ and this project adheres to
 
 - ✨(invitations) can delete domain invitations
 
+## Changed
+
+- 🏗️(core) migrate from pip to uv
+
 ## [1.22.2] - 2026-01-26
 
 ### Fixed

Dockerfile

@@ -3,9 +3,6 @@
 # ---- base image to inherit from ----
 FROM python:3.13.11-alpine AS base
 
-# Upgrade pip to its latest release to speed up dependencies installation
-RUN python -m pip install --upgrade pip
-
 # Upgrade system packages to install security updates
 RUN apk update && \
   apk upgrade
@@ -13,13 +10,26 @@ RUN apk update && \
 # ---- Back-end builder image ----
 FROM base AS back-builder
 
-WORKDIR /builder
+ENV UV_COMPILE_BYTECODE=1
+ENV UV_LINK_MODE=copy
 
-# Copy required python dependencies
-COPY ./src/backend /builder
+# Disable Python downloads, because we want to use the system interpreter
+# across both images. If using a managed Python version, it needs to be
+# copied from the build image into the final image;
+ENV UV_PYTHON_DOWNLOADS=0
 
-RUN mkdir /install && \
-  pip install --prefix=/install .
+# install uv
+COPY --from=ghcr.io/astral-sh/uv:0.9.10 /uv /uvx /bin/
+
+WORKDIR /app
+
+RUN --mount=type=cache,target=/root/.cache/uv \
+    --mount=type=bind,source=src/backend/uv.lock,target=uv.lock \
+    --mount=type=bind,source=src/backend/pyproject.toml,target=pyproject.toml \
+    uv sync --locked --no-install-project --no-dev
+COPY src/backend /app
+RUN --mount=type=cache,target=/root/.cache/uv \
+    uv sync --locked --no-dev
 
 
 # ---- mails ----
@@ -42,14 +52,13 @@ RUN apk add \
   pango \
   rdfind
 
-# Copy installed python dependencies
-COPY --from=back-builder /install /usr/local
-
-# Copy people application (see .dockerignore)
-COPY ./src/backend /app/
-
 WORKDIR /app
 
+# Copy the application from the builder
+COPY --from=back-builder /app /app
+
+ENV PATH="/app/.venv/bin:$PATH"
+
 # collectstatic
 RUN DJANGO_CONFIGURATION=Build DJANGO_JWT_PRIVATE_SIGNING_KEY=Dummy \
     python manage.py collectstatic --noinput
@@ -80,14 +89,18 @@ COPY ./docker/files/usr/local/bin/entrypoint /usr/local/bin/entrypoint
 # docker user (see entrypoint).
 RUN chmod g=u /etc/passwd
 
-# Copy installed python dependencies
-COPY --from=back-builder /install /usr/local
-
-# Copy people application (see .dockerignore)
-COPY ./src/backend /app/
+# Copy the application from the builder
+COPY --from=back-builder /app /app
 
 WORKDIR /app
 
+# Ensure the uv venv is used at runtime
+ENV PATH="/app/.venv/bin:$PATH"
+
+# Generate compiled translation messages
+RUN DJANGO_CONFIGURATION=Build \
+    python manage.py compilemessages --ignore=".venv/**/*"
+
 # We wrap commands run in this container by the following entrypoint that
 # creates a user on-the-fly with the container user ID (see USER) and root group
 # ID.
@@ -102,10 +115,9 @@ USER root:root
 # Install psql
 RUN apk add postgresql-client
 
-# Uninstall people and re-install it in editable mode along with development
-# dependencies
-RUN pip uninstall -y people
-RUN pip install -e .[dev]
+# Install development dependencies
+RUN --mount=from=ghcr.io/astral-sh/uv:0.9.10,source=/uv,target=/bin/uv \
+    uv sync --all-extras --locked
 
 # Restore the un-privileged user running the application
 ARG DOCKER_USER

docker-compose.yml

@@ -42,6 +42,7 @@ services:
       - ./src/backend:/app
       - ./data/media:/data/media
       - ./data/static:/data/static
+      - /app/.venv
     depends_on:
       postgresql:
         condition: service_healthy
@@ -117,6 +118,7 @@ services:
       - ./src/backend:/app
       - ./data/media:/data/media
       - ./data/static:/data/static
+      - /app/.venv
     depends_on:
       postgresql:
         condition: service_healthy

src/backend/pyproject.toml

@@ -17,13 +17,13 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Natural Language :: English",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.13",
 ]
 description = "An application to handle contacts and teams."
 keywords = ["Django", "Contacts", "Teams", "RBAC"]
 license = { file = "LICENSE" }
 readme = "README.md"
-requires-python = ">=3.11"
+requires-python = "~=3.13.0"
 dependencies = [
     "Brotli==1.2.0",
     "PyJWT==2.10.1",