ci: finish uv migration and preserve release version bumps

Author: leandrodamascena

.github/dependabot.yml

@@ -13,7 +13,7 @@ updates:
         patterns:
           - "*"
 
-  - package-ecosystem: "pip"
+  - package-ecosystem: "uv"
     directory: "/"
     schedule:
       interval: "weekly"

.github/scripts/bump_version.py

@@ -0,0 +1,62 @@
+"""Set a release version without installing dependencies or changing their locked versions."""
+
+from __future__ import annotations
+
+import argparse
+import re
+import subprocess
+from pathlib import Path
+
+
+def bump_version(root: Path, version: str) -> None:
+    paths = [root / "pyproject.toml", root / "uv.lock", root / "aws_lambda_powertools/shared/version.py"]
+    originals = {path: path.read_bytes() for path in paths}
+    version_file = paths[-1]
+    current = subprocess.check_output(["uv", "version", "--short"], cwd=root, text=True).strip()
+    source = version_file.read_text()
+    updated, count = re.subn(
+        rf'^VERSION = "{re.escape(current)}"$',
+        f'VERSION = "{version}"',
+        source,
+        flags=re.MULTILINE,
+    )
+    if count != 1:
+        raise ValueError("The package version and shared/version.py must match before releasing")
+    lock_file = paths[1]
+    updated_lock, count = re.subn(
+        rf'(?m)^(name = "aws-lambda-powertools"\nversion = "){re.escape(current)}'
+        r'("\nsource = \{ editable = "\." \})$',
+        rf"\g<1>{version}\g<2>",
+        lock_file.read_text(),
+    )
+    if count != 1:
+        raise ValueError("The lockfile must contain the current local package version")
+
+    # Fail before editing if the lockfile needs dependency changes.
+    subprocess.run(["uv", "lock", "--check", "--offline"], cwd=root, check=True)
+    try:
+        # Avoid re-resolving dependencies, including on release runners with an empty cache.
+        subprocess.run(["uv", "version", version, "--frozen"], cwd=root, check=True)
+        lock_file.write_text(updated_lock)
+        version_file.write_text(updated)
+        subprocess.run(["uv", "lock", "--check", "--offline"], cwd=root, check=True)
+    except (OSError, subprocess.CalledProcessError):
+        for path, content in originals.items():
+            path.write_bytes(content)
+        raise
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("version", help="Release version, e.g. 3.36.0 or 3.36.0a0")
+    parser.add_argument("--pre-release", action="store_true", help="Require an alpha, beta, or release candidate")
+    args = parser.parse_args()
+    number = r"(?:0|[1-9][0-9]*)"
+    match = re.fullmatch(rf"{number}\.{number}\.{number}(?P<pre>(?:a|b|rc){number})?", args.version)
+    if match is None or (args.pre_release and not match.group("pre")):
+        parser.error("Use a version such as 3.36.0, 3.36.0a0, 3.36.0b1, or 3.36.0rc1; --pre-release requires a suffix")
+    bump_version(Path(__file__).resolve().parents[2], args.version)
+
+
+if __name__ == "__main__":
+    main()