pip-convert.md

Converting from requirements.in and requirements.txt to pyproject.toml and uv.lock

Use the following one-liner to reformat an existing requirements.txt file as constraints:

$ uv pip compile requirements.txt --no-annotate --no-header \
    | awk '{printf("%s\"%s\",\n", (NR==1?"constraint-dependencies = [\n    ":"    "), $0)}' \
    | sed '$s/,$/\n]/'

Then, add the constraints to the pyproject.toml in the [tool.uv] section:

TODO EXAMPLE

Then, add the input requirements as dependencies:

$ uv add -r requirements.in

Then, you can remove the constraints-dependencies entry from the pyproject.toml. These dependencies are now pinned in uv.lock instead.