uv lock: regression in handling local version identifiers

[ewianda]

$ cat pyproject.toml 
[project]
name = "test"
version = "0.1.0"
description = "test"
dependencies = [
  "sglang[srt]==0.1.19 ;sys_platform == 'linux'",
  "torch==2.3.0+cu118 ;sys_platform == 'linux'",
]

$ uv --version
uv 0.2.25
$ uv lock --extra-index-url https://download.pytorch.org/whl/cu118 --index-strategy=unsafe-first-match 
warning: `uv lock` is experimental and may change without warning.
warning: No `requires-python` field found in the workspace. Defaulting to `>=3.11`.
Resolved 127 packages in 1.14s

$ rm uv.lock 
$ uv self update 
info: Checking for updates...
success: Upgraded `uv` to v0.2.26! https://github.com/astral-sh/uv/releases/tag/0.2.26
$ uv lock --extra-index-url https://download.pytorch.org/whl/cu118 --index-strategy=unsafe-first-match 
warning: `uv lock` is experimental and may change without warning.
warning: No `requires-python` field found in the workspace. Defaulting to `>=3.11`.
  × No solution found when resolving dependencies:
  ╰─▶ Because vllm==0.5.1 depends on torch==2.3.0 and sglang[srt]==0.1.19 depends on vllm==0.5.1, we can conclude that sglang[srt]==0.1.19 and torch{sys_platform == 'linux'}==2.3.0+cu118 are
      incompatible.
      And because test==0.1.0 depends on sglang[srt]==0.1.19 and torch{sys_platform == 'linux'}==2.3.0+cu118, we can conclude that test==0.1.0 cannot be used.
      And because only test==0.1.0 is available and you require test, we can conclude that the requirements are unsatisfiable.

[charliermarsh]

Presumedly #5104. @ibraheemdev, can you take a look?