Question: How to use uv with poetry on CI?

[Warchant]

Is it possible to use uv to speed-up poetry install on CI?

[woutervh]

for now:

poetry export > requirements.txt
uv venv
uv pip install -r requirements
poetry install

[zanieb]

We'd need to add support for reading Poetry's dependency format, I'm not sure if we will.

Related:

• #1650

[Warchant]

for now:

poetry export > requirements.txt
uv venv
uv pip install -r requirements
poetry install

This works, but poetry export > requirements.txt creates UTF16-LE file, while uv pip install -r requirements.txt expects UTF-8, so I manually need to re-save it in UTF8. It is not a problem, but would be cool if uv would detect input file encoding...

uv pip install -r .\requirements.txt
error: failed to read from file `.\requirements.txt`
  Caused by: stream did not contain valid UTF-8

[Secrus]

for now:

poetry export > requirements.txt
uv venv
uv pip install -r requirements
poetry install

Do not redirect stream from poetry export, use -o flag to specify output file (it properly handles user messages and the actual dependency output).

[zanieb]

As of https://github.com/astral-sh/uv/pull/2633 we support reading this directly.