PYTHON-5862 - Remove usage of uv lock file

.evergreen/run-tests.sh

@@ -26,20 +26,10 @@ else
   exit 1
 fi
 
-cleanup_tests() {
-  # Avoid leaving the lock file in a changed state when we change the resolution type.
-  if [ -n "${TEST_MIN_DEPS:-}" ]; then
-    git checkout uv.lock || true
-  fi
-  cd $PREV_DIR
-}
-
-trap "cleanup_tests" SIGINT ERR
-
 # Start the test runner.
 echo "Running tests with UV_PYTHON=${UV_PYTHON:-}..."
 echo "UV_ARGS=${UV_ARGS}"
 uv run ${UV_ARGS} --reinstall-package pymongo .evergreen/scripts/run_tests.py "$@"
 echo "Running tests with UV_PYTHON=${UV_PYTHON:-}... done."
 
-cleanup_tests
+cd $PREV_DIR

.evergreen/scripts/configure-env.sh

@@ -18,6 +18,8 @@ UV_TOOL_DIR=$PROJECT_DIRECTORY/.local/uv/tools
 UV_CACHE_DIR=$PROJECT_DIRECTORY/.local/uv/cache
 DRIVERS_TOOLS_BINARIES="$DRIVERS_TOOLS/.bin"
 MONGODB_BINARIES="$DRIVERS_TOOLS/mongodb/bin"
+# GNU date on Linux and Windows, BSD date on macOS.
+UV_EXCLUDE_NEWER="$(date -u -d '7 days ago' +%Y-%m-%d 2>/dev/null || date -u -v-7d +%Y-%m-%d)"
 
 # On Evergreen jobs, "CI" will be set, and we don't want to write to $HOME.
 if [ "${CI:-}" == "true" ]; then
@@ -65,6 +67,8 @@ export CARGO_HOME="$CARGO_HOME"
 export UV_TOOL_DIR="$UV_TOOL_DIR"
 export UV_CACHE_DIR="$UV_CACHE_DIR"
 export UV_TOOL_BIN_DIR="$DRIVERS_TOOLS_BINARIES"
+export UV_NO_LOCK=1
+export UV_EXCLUDE_NEWER="$UV_EXCLUDE_NEWER"
 export PYMONGO_BIN_DIR="$PYMONGO_BIN_DIR"
 export PATH="$PATH_EXT"
 # shellcheck disable=SC2154

.github/actions/set-uv-exclude-newer/action.yml

@@ -0,0 +1,18 @@
+name: Set UV_EXCLUDE_NEWER
+description: >-
+  Export UV_EXCLUDE_NEWER as 7 days before the current UTC date so uv
+  resolution ignores packages published in the last week.
+runs:
+  using: composite
+  steps:
+    - name: Set UV_EXCLUDE_NEWER
+      shell: bash
+      run: |
+        set -euo pipefail
+        # GNU date on Linux and Windows, BSD date on macOS.
+        value="$(date -u -d '7 days ago' +%Y-%m-%d 2>/dev/null || date -u -v-7d +%Y-%m-%d)"
+        if [ -z "$value" ]; then
+          echo "Failed to compute UV_EXCLUDE_NEWER" >&2
+          exit 1
+        fi
+        echo "UV_EXCLUDE_NEWER=$value" >> "$GITHUB_ENV"

.github/workflows/test-python.yml

@@ -17,6 +17,9 @@ defaults:
 permissions:
   contents: read
 
+env:
+  UV_NO_LOCK: "1"
+
 jobs:
 
   static:
@@ -25,6 +28,7 @@ jobs:
       - uses: actions/checkout@v6.0.3
         with:
           persist-credentials: false
+      - uses: ./.github/actions/set-uv-exclude-newer
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
@@ -70,6 +74,7 @@ jobs:
       - uses: actions/checkout@v6.0.3
         with:
           persist-credentials: false
+      - uses: ./.github/actions/set-uv-exclude-newer
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
@@ -92,6 +97,7 @@ jobs:
       - uses: actions/checkout@v6.0.3
         with:
           persist-credentials: false
+      - uses: ./.github/actions/set-uv-exclude-newer
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
@@ -120,6 +126,7 @@ jobs:
       - uses: actions/checkout@v6.0.3
         with:
           persist-credentials: false
+      - uses: ./.github/actions/set-uv-exclude-newer
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
@@ -145,6 +152,7 @@ jobs:
       - uses: actions/checkout@v6.0.3
         with:
           persist-credentials: false
+      - uses: ./.github/actions/set-uv-exclude-newer
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
@@ -167,6 +175,7 @@ jobs:
       - uses: actions/checkout@v6.0.3
         with:
           persist-credentials: false
+      - uses: ./.github/actions/set-uv-exclude-newer
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
@@ -188,6 +197,7 @@ jobs:
       - uses: actions/checkout@v6.0.3
         with:
           persist-credentials: false
+      - uses: ./.github/actions/set-uv-exclude-newer
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
@@ -278,6 +288,7 @@ jobs:
         - uses: actions/checkout@v6.0.3
           with:
             persist-credentials: false
+        - uses: ./.github/actions/set-uv-exclude-newer
         - name: Install uv
           uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
           with:

.gitignore

@@ -45,3 +45,6 @@ xunit-results/
 coverage.xml
 server.log
 .coverage
+
+# uv lockfiles
+uv.lock

.pre-commit-config.yaml

@@ -133,14 +133,3 @@ repos:
     language: python
     require_serial: true
     additional_dependencies: ["shrub.py>=3.10.0", "pyyaml>=6.0.2"]
-
-  - id: uv-lock
-    name: uv-lock
-    entry: uv lock
-    language: python
-    require_serial: true
-    files: ^(uv\.lock|pyproject\.toml|requirements.txt|requirements/.*\.txt)$
-    pass_filenames: false
-    fail_fast: true
-    additional_dependencies:
-      - "uv>=0.8.4"

CONTRIBUTING.md

@@ -574,7 +574,4 @@ From the spawn host or Ubuntu image, do the following:
 ## Dependabot updates
 
 Dependabot will raise PRs at most once per week, grouped by GitHub Actions updates and Python requirement
-file updates.  We have a pre-commit hook that will update the `uv.lock` file when requirements change.
-To update the lock file on a failing PR, you can use a method like `gh pr checkout <pr number>`, then run
-`just lint uv-lock` to update the lock file, and then push the changes.  If a typing dependency has changed,
-also run `just typing` and handle any new findings.
+file updates. If a typing dependency has changed, run `just typing` and handle any new findings.

justfile

@@ -1,6 +1,12 @@
 # See https://just.systems/man/en/ for instructions
 set shell := ["bash", "-c"]
 
+# Don't let `uv` create or read uv.lock.
+export UV_NO_LOCK := "1"
+# Match CI's resolution window so local installs agree.
+# GNU date on Linux and Windows, BSD date on macOS.
+export UV_EXCLUDE_NEWER := `date -u -d '7 days ago' +%Y-%m-%d 2>/dev/null || date -u -v-7d +%Y-%m-%d`
+
 # Commonly used command segments.
 typing_run := "uv run --group typing --extra aws --extra encryption --with numpy --extra ocsp --extra snappy --extra test --extra zstd"
 docs_run := "uv run --extra docs"