aws-lambda-python-alpha: Support `uv` lockfile for `PythonFunction` bundling

[garysassano]

Describe the feature

Today, PythonFunction supports lockfiles from the following ecosystems:

• PIP
• Poetry

uv is gaining in popularity and has its own lockfile, uv.lock. It would be great if PythonFunction supported using this lockfile.

Use Case

Allow the usage of Python modern dev tools.

Proposed Solution

Update the bundling logic in the Dockerfile.

The Dockerfile is still using Python 3.7 as the default, despite even Python 3.8 being deprecated.

Other Information

Issue inspired by #31753
Issue related to #31238

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CDK version used

2.172.0

Environment details (OS name and version, etc.)

Ubuntu 24.04

[pahud]

Makes sense for me. Please help us prioritize with 👍

[garysassano]

For anyone in need of a temporary solution, I came across this uv-python-lambda construct.

[matta-pie]

Any update on this?

i'm creating a PythonFunction with runtime: lambda.Runtime.PYTHON_3_11 however it seems like the python version doesn't get respected when it comes to building assets with Docker

Sending build context to Docker daemon  71.68kB
Step 1/12 : ARG IMAGE=public.ecr.aws/sam/build-python3.7
Step 2/12 : FROM $IMAGE

im on cdk 2.178.2