Summary

I have been trying to configure uv to allow me to have two sets of conflicting optional dependencies to allow me to easily switch between
having specific dependencies installed from pypi or editable from a local folder. However, when I try to do this, I end up with an error of the form

error: Failed to parse `uv.lock`
  Caused by: Dependency `qcodes` has missing `version` field but has more than one matching package

Which I can only work around by deleting the uv.lock file.

To reproduce: Have a project with a dynamic version field in pyproject.toml checked out in a subfolder of the current folder.
In this case I use QCoDeS which I maintain but I can also reproduce the issue with other projects.

uv init demo

Add

[project.optional-dependencies]
editable = [
    "qcodes>=0.50.1"
    ]
pypi = [
    "qcodes>=0.50.1"
    ]

[tool.uv]

conflicts = [[
        { extra = "editable" },
        { extra = "pypi" },
         ]]

[tool.uv.sources]


qcodes = [
    { path = "../qcodes", editable = true , extra = "editable"},
    { index="pypi" , extra = "pypi"}
    ]


[[tool.uv.index]]
name = "pypi"
url = "https://pypi.org/simple/"
explicit = true

To the demo projects pyproject.toml file

Run

uv sync --extra pypi

Correctly installs all dependencies as expected from pypi.

Howeverm when then running.

uv sync --extra editable  --upgrade

I get

error: Failed to parse `uv.lock`
  Caused by: Dependency `qcodes` has missing `version` field but has more than one matching package

Removing the uv.lock file and I can correctly install the editable version.

Now running

uv sync --extra pypi  --upgrade

results in the same error which can then be worked around by removing the uv.lock file

Platform

Window 11 24H2

Version

uv 0.5.29 (ca73c47 2025-02-05)

Python version

Python 3.13 but also reproduced using 3.11