Keywords: I001, Organize imports, first-party

Ruff version : 0.4.2

If I'm not mistaken, ruff server currently treats first-party libraries like they're third-party libraries, which is not the case for ruff-lsp.

Here is a minimal setup to reproduce this:

• Create a new project with the following layout:

.
├── pyproject.toml
└── src
     └── hello_world
         ├── __init__.py
         ├── module.py
         └── other_module.py

with these contents:

[build-system]
requires = ["setuptools>=61.0"]
build-backend = "setuptools.build_meta"

[project]
name = "hello-world"
version = "0.0.1"
dependencies = [
  "numpy"
]

[tool.ruff]
lint.extend-select = ["I"]

hello = "hello world"

from pathlib import Path

from numpy.linalg import norm

from hello_world.module import hello

• Then run ruff-lsp in an editor => this should not lint the import order, just like doing ruff check . doesn't say anything about import order
• Then run ruff server in an editor => now there should be an Organize import lint, and if you apply it, it should bring the hello_world import just above the numpy import, which is not the expected behavior