The --force-exclude flag is behaving differently to ruff #2506
Description
Summary
Following on from #1469, I expect the behaviour of --force-exclude to be the same for ruff check and ty check But what I'm seeing seems to differ (ty doesn't seem to obey the flag at all?).
Below is an MVP where I run them both in a project with a file passed via CLI:
bt@FA-02090-LNX:~/repos/autonomy/DEV-3484-ruff-with-shebangs$ uvx ruff --version
ruff 0.14.11
bt@FA-02090-LNX:~/repos/autonomy/DEV-3484-ruff-with-shebangs$ uvx ty --version
ty 0.0.12
bt@FA-02090-LNX:~/repos/autonomy/DEV-3484-ruff-with-shebangs$ uvx ruff check --force-exclude -v out/amd64/install/_setup_util.py
[2026-01-15][16:56:48][ruff::resolve][DEBUG] Using configuration file (via parent) at: /home/bt/repos/autonomy/DEV-3484-ruff-with-shebangs/pyproject.toml
[2026-01-15][16:56:48][ruff_workspace::resolver][DEBUG] Ignored path via `exclude`: "/home/bt/repos/autonomy/DEV-3484-ruff-with-shebangs/out"
[2026-01-15][16:56:48][ruff::commands::check][DEBUG] Identified files to lint in: 50.209µs
warning: No Python files found under the given path(s)
All checks passed!
bt@FA-02090-LNX:~/repos/autonomy/DEV-3484-ruff-with-shebangs$ uvx ty check --force-exclude -v out/amd64/install/_setup_util.py
INFO Defaulting to python-platform `linux`
INFO Python version: Python 3.12, platform: linux
INFO Indexed 1 file(s) in 0.002s
error[invalid-argument-type]: Argument to bound method `insert` is incorrect
--> out/amd64/install/_setup_util.py:283:41
|
282 | if base_path not in CMAKE_PREFIX_PATH:
283 | CMAKE_PREFIX_PATH.insert(0, base_path)
| ^^^^^^^^^ Expected `LiteralString`, found `str`
284 | CMAKE_PREFIX_PATH = os.pathsep.join(CMAKE_PREFIX_PATH)
|
info: Method defined here
--> stdlib/builtins.pyi:2865:9
|
2863 | """Return number of occurrences of value."""
2864 |
2865 | def insert(self, index: SupportsIndex, object: _T, /) -> None:
| ^^^^^^ ---------- Parameter declared here
2866 | """Insert object before index."""
|
info: Union variant `bound method list[LiteralString].insert(index: SupportsIndex, object: LiteralString, /) -> None` is incompatible with this call site
info: Attempted to call union type `(bound method list[LiteralString].insert(index: SupportsIndex, object: LiteralString, /) -> None) | (bound method list[Unknown].insert(index: SupportsIndex, object: Unknown, /) -> None)`
info: rule `invalid-argument-type` is enabled by default
Found 1 diagnostic
And I've confirmed that when running without a file passed, ty's use of pyproject.toml correctly excludes it:
bt@FA-02090-LNX:~/repos/autonomy/DEV-3484-ruff-with-shebangs$ uvx ty check -vvv |& grep ' Checking file .*_setup_util.py'
bt@FA-02090-LNX:~/repos/autonomy/DEV-3484-ruff-with-shebangs$
My excludes are specified in this part of the pyproject.toml:
[tool.ty.src]
exclude = [
".git",
".ycm_extra_conf.py",
"docker",
"out",
]
Version
0.0.12