I'm trying to migrate isort and black to ruff but encountered some problems when using ruff's isort configs.

Ruff version 0.2.1.

Suppose I have a first-party package named package and the test code is:

from package.utils import a
from package.func import function

with the ruff config:

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

[tool.ruff.lint.isort]
length-sort = true
force-sort-within-sections = true

ruff will report import order error and fix it into:

from package.func import function
from package.utils import a

but isort sorts it as the origin test code given above.

I make one more test, renaming the package.func to package.function:

from package.utils import a
from package.function import function

this time ruff does not report any error. It seems ruff sort the import order by module name length instead of import expression length?