Add option to uv export to obtain version in workspace packages

[ivan94fi]

Summary

Description

We have a monorepo project, which is composed of several python packages. We use uv as project manager and we use a private pypi server where our wheels are published. When creating the docker image for our product we install the packages from the private pypi server, so we need exact versions, and we would like to avoid having to mount the sources, to be sure to have the published version in the final docker image.

Request

We would like to obtain package versions also for workspace members whe using uv export --frozen, so that later we can just install the generated requirements file and get packages from the pypi server.

Current situation:

Command:
uv export --frozen --no-hashes

Output:

-e ./packages/company.package1
-e ./packages/company.package2
-e ./packages/company.package3
-e ./packages/company.package4
accelerate==1.1.0
annotated-types==0.7.0
anyio==4.6.2.post1
certifi==2024.8.30
charset-normalizer==3.4.0
click==8.1.7
.
.
.

Example

Here we use an hypothetical --emit-workspace-with-versions flag, to emit the workspace members as "remote" dependencies.

Command:
uv export --frozen --emit-workspace-with-versions --no-hashes

Output:

company.package1=1.3.2
company.package2==0.3.2
company.package3==1.0.0
company.package4==3.2.2
accelerate==1.1.0
annotated-types==0.7.0
anyio==4.6.2.post1
certifi==2024.8.30
charset-normalizer==3.4.0
click==8.1.7
.
.
.

The versions in the workspace's members here are the ones taken from the pyproject.toml file of each member at the time the command is run.