Conditionally allow dependencies to resolve where specific versions conflict with optional dependency bounds

[mjlbach]

Description of problem

Some optional dependencies can introduce additional version constraints. E.g., I may introduce a package that requires numpy pinned to version 1.x.x. I would ideally like this not to impact the resolved packages when not using this optional dependency.

Scenario 1: optional dependency upper bound is incompatible with lower bound of dependency

pyproject toml

[project]
name = "uv-test"
version = "0.1.0"
description = "an example showing conflict resolution"
requires-python = ">=3.12.7"
dependencies = [
  "numpy>=2.0.0",
]

[project.optional-dependencies]
mediapipe = [
    "mediapipe>=0.10.20",
]

Sync the dependencies

❯ uv sync
Using CPython 3.12.7
Creating virtual environment at: .venv
  × No solution found when resolving dependencies:
  ╰─▶ Because your project depends on numpy>=2.0.0 and mediapipe==0.10.20 depends on
      numpy<2, we can conclude that mediapipe==0.10.20 and your project are incompatible.
      And because only mediapipe<=0.10.20 is available, we can conclude that
      mediapipe>=0.10.20 and your project are incompatible.
      And because uv-test[mediapipe] depends on mediapipe>=0.10.20 and your project
      requires uv-test[mediapipe], we can conclude that your project's requirements are
      unsatisfiable.

Workaround

[project]
name = "uv-test"
version = "0.1.0"
description = "an example showing conflict resolution"
requires-python = ">=3.12.7"
dependencies = []

[dependency-groups]
numpy = [
  "numpy>=2.0.0",
]

[tool.uv]
default-groups = ["numpy"]
conflicts = [
    [
      { group = "numpy" },
      { extra = "mediapipe" },
    ],
]

[project.optional-dependencies]
mediapipe = [
    "mediapipe>=0.10.20",
]

Ugly workaround

uv sync --extra mediapipe --no-group numpy

Anything I'm missing?