set python version in nox sessions when syncing uv (#138)

Author: joshuadavidthomas

.github/workflows/test.yml

@@ -13,8 +13,6 @@ concurrency:
 env:
   PYTHONUNBUFFERED: "1"
   FORCE_COLOR: "1"
-  PY_MAX_VERSION: "3.13"
-  PY_MIN_VERSION: "3.9"
   UV_VERSION: "0.4.x"
 
 jobs:
@@ -31,9 +29,6 @@ jobs:
           enable-cache: true
           version: ${{ env.UV_VERSION }}
 
-      - name: Install Python
-        run: uv python install ${{ env.PY_MIN_VERSION }}
-
       - id: set-matrix
         run: |
           uv run nox --session "gha_matrix"
@@ -54,9 +49,6 @@ jobs:
           enable-cache: true
           version: ${{ env.UV_VERSION }}
 
-      - name: Install Python
-        run: uv python install ${{ matrix.python-version }}
-
       - name: Run tests
         run: |
           uv run nox --session "tests(python='${{ matrix.python-version }}', django='${{ matrix.django-version }}')"
@@ -77,16 +69,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+
       - name: Install uv
         uses: astral-sh/setup-uv@v3
         with:
           enable-cache: true
           version: ${{ env.UV_VERSION }}
 
-      - name: Install Python
-        run: uv python install ${{ env.PY_MAX_VERSION }}
-
-      - name: Run mypy
+      - name: Run type checks
         run: |
           uv run nox --session "types"
 
@@ -101,9 +91,6 @@ jobs:
           enable-cache: true
           version: ${{ env.UV_VERSION }}
 
-      - name: Install Python
-        run: uv python install ${{ env.PY_MIN_VERSION }}
-
-      - name: Run mypy
+      - name: Generate code coverage
         run: |
           uv run nox --session "coverage"

noxfile.py

@@ -71,12 +71,14 @@ def tests(session, django):
     session.run_install(
         "uv",
         "sync",
-        "--frozen",
         "--extra",
         "tests",
+        "--frozen",
         "--inexact",
         "--no-install-package",
         "django",
+        "--python",
+        session.python,
         env={"UV_PROJECT_ENVIRONMENT": session.virtualenv.location},
     )
 
@@ -98,9 +100,11 @@ def coverage(session):
     session.run_install(
         "uv",
         "sync",
-        "--frozen",
         "--extra",
         "tests",
+        "--frozen",
+        "--python",
+        PY_LATEST,
         env={"UV_PROJECT_ENVIRONMENT": session.virtualenv.location},
     )
 
@@ -129,9 +133,11 @@ def types(session):
     session.run_install(
         "uv",
         "sync",
-        "--frozen",
         "--extra",
         "types",
+        "--frozen",
+        "--python",
+        PY_LATEST,
         env={"UV_PROJECT_ENVIRONMENT": session.virtualenv.location},
     )
     command = ["python", "-m", "mypy", "."]
@@ -145,9 +151,11 @@ def demo(session):
     session.run_install(
         "uv",
         "sync",
-        "--frozen",
         "--extra",
         "types",
+        "--frozen",
+        "--python",
+        PY_DEFAULT,
         env={"UV_PROJECT_ENVIRONMENT": session.virtualenv.location},
     )