uv in the noxfile and CI.

Author: Julian

.github/workflows/ci.yml

@@ -2,27 +2,17 @@ name: CI
 
 on:
   push:
+    branches-ignore:
+      - "wip*"
+    tags:
+      - "v*"
   pull_request:
-  release:
-    types: [published]
   schedule:
     # Daily at 6:43
     - cron: "43 6 * * *"
-
-env:
-  PIP_DISABLE_PIP_VERSION_CHECK: "1"
-  PIP_NO_PYTHON_VERSION_WARNING: "1"
+  workflow_dispatch:
 
 jobs:
-  pre-commit:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.x"
-      - uses: pre-commit/[email protected]
-
   list:
     runs-on: ubuntu-latest
     outputs:
@@ -40,6 +30,7 @@ jobs:
   ci:
     needs: list
     runs-on: ${{ matrix.os }}
+
     strategy:
       fail-fast: false
       matrix:
@@ -58,16 +49,19 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: |
-            3.8
             3.9
             3.10
             3.11
             3.12
             3.13
             pypy3.10
           allow-prereleases: true
+
+      - name: Set up uv
+        uses: hynek/setup-cached-uv@v2
       - name: Set up nox
         uses: wntrblm/[email protected]
+
       - name: Run nox
         run: nox -s "${{ matrix.noxenv }}" -- ${{ matrix.posargs }}
 
@@ -77,6 +71,7 @@ jobs:
     environment:
       name: PyPI
       url: https://pypi.org/p/jsonschema-specifications
+
     permissions:
       contents: write
       id-token: write
@@ -87,10 +82,14 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.x"
+      - name: Set up uv
+        uses: hynek/setup-cached-uv@v2
       - name: Install dependencies
-        run: python -m pip install build
+        run: uv pip install --system build
+
       - name: Create packages
         run: python -m build .
+
       - name: Publish to PyPI
         if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
         uses: pypa/gh-action-pypi-publish@release/v1

noxfile.py

@@ -9,20 +9,30 @@
 DOCS = ROOT / "docs"
 PACKAGE = ROOT / "jsonschema_specifications"
 
+REQUIREMENTS = dict(
+    docs=DOCS / "requirements.txt",
+)
+REQUIREMENTS_IN = [  # this is actually ordered, as files depend on each other
+    (path.parent / f"{path.stem}.in", path) for path in REQUIREMENTS.values()
+]
+
+SUPPORTED = ["3.9", "3.10", "pypy3.10", "3.11", "3.12", "3.13"]
+LATEST = "3.12"  # until 3.13 matures
 
+nox.options.default_venv_backend = "uv|virtualenv"
 nox.options.sessions = []
 
 
-def session(default=True, **kwargs):  # noqa: D103
+def session(default=True, python=LATEST, **kwargs):  # noqa: D103
     def _session(fn):
         if default:
             nox.options.sessions.append(kwargs.get("name", fn.__name__))
-        return nox.session(**kwargs)(fn)
+        return nox.session(python=python, **kwargs)(fn)
 
     return _session
 
 
-@session(python=["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "pypy3"])
+@session(python=SUPPORTED)
 def tests(session):
     """
     Run the test suite with a corresponding Python version.
@@ -58,7 +68,7 @@ def style(session):
     Check Python code style.
     """
     session.install("ruff")
-    session.run("ruff", "check", ROOT)
+    session.run("ruff", "check", ROOT, __file__)
 
 
 @session()
@@ -88,7 +98,7 @@ def docs(session, builder):
     """
     Build the documentation using a specific Sphinx builder.
     """
-    session.install("-r", DOCS / "requirements.txt")
+    session.install("-r", REQUIREMENTS["docs"])
     with TemporaryDirectory() as tmpdir_str:
         tmpdir = Path(tmpdir_str)
         argv = ["-n", "-T", "-W"]
@@ -123,15 +133,17 @@ def docs_style(session):
 @session(default=False)
 def requirements(session):
     """
-    Update the project's pinned requirements. Commit the result.
+    Update the project's pinned requirements.
+
+    You should commit the result afterwards.
     """
-    session.install("pip-tools")
-    for each in [DOCS / "requirements.in"]:
-        session.run(
-            "pip-compile",
-            "--resolver",
-            "backtracking",
-            "--strip-extras",
-            "-U",
-            each.relative_to(ROOT),
-        )
+    if session.venv_backend == "uv":
+        cmd = ["uv", "pip", "compile"]
+    else:
+        session.install("pip-tools")
+        cmd = ["pip-compile", "--resolver", "backtracking", "--strip-extras"]
+
+    for each, out in REQUIREMENTS_IN:
+        # otherwise output files end up with silly absolute path comments...
+        relative = each.relative_to(ROOT)
+        session.run(*cmd, "--upgrade", "--output-file", out, relative)