Multi-root workspace makes Ruff use wrong settings

[OXINARF]

When using a multi-root workspace, Ruff is showing None for config_path, although it does find the correct configuration file. The Ruff cache folder, the file resolver root, the linter root and src, all have wrong values.

I'm not sure if it makes a difference, but:

• I'm in a devcontainer, inside WSL
• my workspace has two folders, with one being a sub-folder of the other

I'm pasting below, the "Debug information" with workspace and without (some data has been anonymized).

Let me know if I can help with any more information.

Single folder workspace (good)

Global:
executable = /home/vscode/.vscode-server/extensions/charliermarsh.ruff-2025.32.0-alpine-x64/bundled/libs/bin/ruff
version = 0.14.8
position_encoding = UTF16
workspace_root_folders = [
    "/X",
]
indexed_configuration_files = [
    "/X/systemtests/pyproject.toml",
]
open_documents_len = 4
client_capabilities = ResolvedClientCapabilities {
    code_action_deferred_edit_resolution: true,
    apply_edit: true,
    document_changes: true,
    workspace_refresh: true,
    pull_diagnostics: true,
}

Open document:
uri = file:///X/systemtests/tests/common/fakes/wus.py
kind = Text
version = 1129
client_settings = ClientSettings {
    fix_all: true,
    organize_imports: true,
    lint_enable: true,
    disable_rule_comment_enable: true,
    fix_violation_enable: true,
    show_syntax_errors: true,
    editor_settings: EditorSettings {
        configuration: None,
        lint_preview: None,
        format_preview: None,
        format_backend: Some(
            Internal,
        ),
        select: None,
        extend_select: None,
        ignore: None,
        exclude: None,
        line_length: None,
        configuration_preference: EditorFirst,
    },
}
config_path = Some("/X/systemtests/pyproject.toml")

# General Settings
cache_dir = "/X/systemtests/.ruff_cache"
fix = false
fix_only = false
output_format = full
show_fixes = false
unsafe_fixes = hint

# File Resolver Settings
file_resolver.exclude = [
	".bzr",
	".direnv",
	".eggs",
	".git",
	".git-rewrite",
	".hg",
	".ipynb_checkpoints",
	".mypy_cache",
	".nox",
	".pants.d",
	".pyenv",
	".pytest_cache",
	".pytype",
	".ruff_cache",
	".svn",
	".tox",
	".venv",
	".vscode",
	"__pypackages__",
	"_build",
	"buck-out",
	"dist",
	"node_modules",
	"site-packages",
	"venv",
]
file_resolver.extend_exclude = [
	"tests/common/protobuf/Z",
]
file_resolver.force_exclude = false
file_resolver.include = [
	"*.py",
	"*.pyi",
	"*.ipynb",
	"**/pyproject.toml",
]
file_resolver.extend_include = []
file_resolver.respect_gitignore = true
file_resolver.project_root = "/X/systemtests"

# Linter Settings
linter.exclude = []
linter.project_root = "/X/systemtests"
linter.rules.enabled = [
	unsorted-imports (I001),
	missing-required-import (I002),
	multiple-imports-on-one-line (E401),
	module-import-not-at-top-of-file (E402),
	multiple-statements-on-one-line-colon (E701),
	multiple-statements-on-one-line-semicolon (E702),
	useless-semicolon (E703),
	none-comparison (E711),
	true-false-comparison (E712),
	not-in-test (E713),
	not-is-test (E714),
	type-comparison (E721),
	bare-except (E722),
	lambda-assignment (E731),
	ambiguous-variable-name (E741),
	ambiguous-class-name (E742),
	ambiguous-function-name (E743),
	io-error (E902),
	unused-import (F401),
	import-shadowed-by-loop-var (F402),
	undefined-local-with-import-star (F403),
	late-future-import (F404),
	undefined-local-with-import-star-usage (F405),
	undefined-local-with-nested-import-star-usage (F406),
	future-feature-not-defined (F407),
	percent-format-invalid-format (F501),
	percent-format-expected-mapping (F502),
	percent-format-expected-sequence (F503),
	percent-format-extra-named-arguments (F504),
	percent-format-missing-argument (F505),
	percent-format-mixed-positional-and-named (F506),
	percent-format-positional-count-mismatch (F507),
	percent-format-star-requires-sequence (F508),
	percent-format-unsupported-format-character (F509),
	string-dot-format-invalid-format (F521),
	string-dot-format-extra-named-arguments (F522),
	string-dot-format-extra-positional-arguments (F523),
	string-dot-format-missing-arguments (F524),
	string-dot-format-mixing-automatic (F525),
	f-string-missing-placeholders (F541),
	multi-value-repeated-key-literal (F601),
	multi-value-repeated-key-variable (F602),
	expressions-in-star-assignment (F621),
	multiple-starred-expressions (F622),
	assert-tuple (F631),
	is-literal (F632),
	invalid-print-syntax (F633),
	if-tuple (F634),
	break-outside-loop (F701),
	continue-outside-loop (F702),
	yield-outside-function (F704),
	return-outside-function (F706),
	default-except-not-last (F707),
	forward-annotation-syntax-error (F722),
	redefined-while-unused (F811),
	undefined-name (F821),
	undefined-export (F822),
	undefined-local (F823),
	unused-variable (F841),
	unused-annotation (F842),
	raise-not-implemented (F901),
]
linter.rules.should_fix = [
	unsorted-imports (I001),
	missing-required-import (I002),
	multiple-imports-on-one-line (E401),
	module-import-not-at-top-of-file (E402),
	multiple-statements-on-one-line-colon (E701),
	multiple-statements-on-one-line-semicolon (E702),
	useless-semicolon (E703),
	none-comparison (E711),
	true-false-comparison (E712),
	not-in-test (E713),
	not-is-test (E714),
	type-comparison (E721),
	bare-except (E722),
	lambda-assignment (E731),
	ambiguous-variable-name (E741),
	ambiguous-class-name (E742),
	ambiguous-function-name (E743),
	io-error (E902),
	unused-import (F401),
	import-shadowed-by-loop-var (F402),
	undefined-local-with-import-star (F403),
	late-future-import (F404),
	undefined-local-with-import-star-usage (F405),
	undefined-local-with-nested-import-star-usage (F406),
	future-feature-not-defined (F407),
	percent-format-invalid-format (F501),
	percent-format-expected-mapping (F502),
	percent-format-expected-sequence (F503),
	percent-format-extra-named-arguments (F504),
	percent-format-missing-argument (F505),
	percent-format-mixed-positional-and-named (F506),
	percent-format-positional-count-mismatch (F507),
	percent-format-star-requires-sequence (F508),
	percent-format-unsupported-format-character (F509),
	string-dot-format-invalid-format (F521),
	string-dot-format-extra-named-arguments (F522),
	string-dot-format-extra-positional-arguments (F523),
	string-dot-format-missing-arguments (F524),
	string-dot-format-mixing-automatic (F525),
	f-string-missing-placeholders (F541),
	multi-value-repeated-key-literal (F601),
	multi-value-repeated-key-variable (F602),
	expressions-in-star-assignment (F621),
	multiple-starred-expressions (F622),
	assert-tuple (F631),
	is-literal (F632),
	invalid-print-syntax (F633),
	if-tuple (F634),
	break-outside-loop (F701),
	continue-outside-loop (F702),
	yield-outside-function (F704),
	return-outside-function (F706),
	default-except-not-last (F707),
	forward-annotation-syntax-error (F722),
	redefined-while-unused (F811),
	undefined-name (F821),
	undefined-export (F822),
	undefined-local (F823),
	unused-variable (F841),
	unused-annotation (F842),
	raise-not-implemented (F901),
]
linter.per_file_ignores = {}
linter.safety_table.forced_safe = []
linter.safety_table.forced_unsafe = []
linter.unresolved_target_version = none
linter.per_file_target_version = {}
linter.preview = disabled
linter.explicit_preview_rules = false
linter.extension = ExtensionMapping({})
linter.allowed_confusables = []
linter.builtins = []
linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
linter.external = []
linter.ignore_init_module_imports = true
linter.logger_objects = []
linter.namespace_packages = []
linter.src = [
	"/X/systemtests",
	"/X/systemtests/src",
]
linter.tab_size = 4
linter.line_length = 120
linter.task_tags = [
	TODO,
	FIXME,
	XXX,
]
linter.typing_modules = []
linter.typing_extensions = true

# Linter Plugins
linter.flake8_annotations.mypy_init_return = false
linter.flake8_annotations.suppress_dummy_args = false
linter.flake8_annotations.suppress_none_returning = false
linter.flake8_annotations.allow_star_arg_any = false
linter.flake8_annotations.ignore_fully_untyped = false
linter.flake8_bandit.hardcoded_tmp_directory = [
	/tmp,
	/var/tmp,
	/dev/shm,
]
linter.flake8_bandit.check_typed_exception = false
linter.flake8_bandit.extend_markup_names = []
linter.flake8_bandit.allowed_markup_calls = []
linter.flake8_bugbear.extend_immutable_calls = []
linter.flake8_builtins.allowed_modules = []
linter.flake8_builtins.ignorelist = []
linter.flake8_builtins.strict_checking = false
linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
linter.flake8_copyright.author = none
linter.flake8_copyright.min_file_size = 0
linter.flake8_errmsg.max_string_length = 0
linter.flake8_gettext.functions_names = [
	_,
	gettext,
	ngettext,
]
linter.flake8_implicit_str_concat.allow_multiline = true
linter.flake8_import_conventions.aliases = {
	altair = alt,
	holoviews = hv,
	matplotlib = mpl,
	matplotlib.pyplot = plt,
	networkx = nx,
	numpy = np,
	numpy.typing = npt,
	pandas = pd,
	panel = pn,
	plotly.express = px,
	polars = pl,
	pyarrow = pa,
	seaborn = sns,
	tensorflow = tf,
	tkinter = tk,
	xml.etree.ElementTree = ET,
}
linter.flake8_import_conventions.banned_aliases = {}
linter.flake8_import_conventions.banned_from = []
linter.flake8_pytest_style.fixture_parentheses = false
linter.flake8_pytest_style.parametrize_names_type = tuple
linter.flake8_pytest_style.parametrize_values_type = list
linter.flake8_pytest_style.parametrize_values_row_type = tuple
linter.flake8_pytest_style.raises_require_match_for = [
	BaseException,
	Exception,
	ValueError,
	OSError,
	IOError,
	EnvironmentError,
	socket.error,
]
linter.flake8_pytest_style.raises_extend_require_match_for = []
linter.flake8_pytest_style.mark_parentheses = false
linter.flake8_quotes.inline_quotes = double
linter.flake8_quotes.multiline_quotes = double
linter.flake8_quotes.docstring_quotes = double
linter.flake8_quotes.avoid_escape = true
linter.flake8_self.ignore_names = [
	_make,
	_asdict,
	_replace,
	_fields,
	_field_defaults,
	_name_,
	_value_,
]
linter.flake8_tidy_imports.ban_relative_imports = "parents"
linter.flake8_tidy_imports.banned_api = {}
linter.flake8_tidy_imports.banned_module_level_imports = []
linter.flake8_type_checking.strict = false
linter.flake8_type_checking.exempt_modules = [
	typing,
	typing_extensions,
]
linter.flake8_type_checking.runtime_required_base_classes = []
linter.flake8_type_checking.runtime_required_decorators = []
linter.flake8_type_checking.quote_annotations = false
linter.flake8_unused_arguments.ignore_variadic_names = false
linter.isort.required_imports = []
linter.isort.combine_as_imports = false
linter.isort.force_single_line = false
linter.isort.force_sort_within_sections = false
linter.isort.detect_same_package = true
linter.isort.case_sensitive = false
linter.isort.force_wrap_aliases = false
linter.isort.force_to_top = []
linter.isort.known_modules = {}
linter.isort.order_by_type = true
linter.isort.relative_imports_order = furthest_to_closest
linter.isort.single_line_exclusions = []
linter.isort.split_on_trailing_comma = false
linter.isort.classes = []
linter.isort.constants = []
linter.isort.variables = []
linter.isort.no_lines_before = []
linter.isort.lines_after_imports = -1
linter.isort.lines_between_types = 0
linter.isort.forced_separate = []
linter.isort.section_order = [
	known { type = future },
	known { type = standard_library },
	known { type = third_party },
	known { type = first_party },
	known { type = local_folder },
]
linter.isort.default_section = known { type = third_party }
linter.isort.no_sections = false
linter.isort.from_first = false
linter.isort.length_sort = false
linter.isort.length_sort_straight = false
linter.mccabe.max_complexity = 10
linter.pep8_naming.ignore_names = [
	setUp,
	tearDown,
	setUpClass,
	tearDownClass,
	setUpModule,
	tearDownModule,
	asyncSetUp,
	asyncTearDown,
	setUpTestData,
	failureException,
	longMessage,
	maxDiff,
]
linter.pep8_naming.classmethod_decorators = []
linter.pep8_naming.staticmethod_decorators = []
linter.pycodestyle.max_line_length = 120
linter.pycodestyle.max_doc_length = none
linter.pycodestyle.ignore_overlong_task_comments = false
linter.pyflakes.extend_generics = []
linter.pyflakes.allowed_unused_imports = []
linter.pylint.allow_magic_value_types = [
	str,
	bytes,
]
linter.pylint.allow_dunder_method_names = []
linter.pylint.max_args = 5
linter.pylint.max_positional_args = 5
linter.pylint.max_returns = 6
linter.pylint.max_bool_expr = 5
linter.pylint.max_branches = 12
linter.pylint.max_statements = 50
linter.pylint.max_public_methods = 20
linter.pylint.max_locals = 15
linter.pylint.max_nested_blocks = 5
linter.pyupgrade.keep_runtime_typing = false
linter.ruff.parenthesize_tuple_in_subscript = false

# Formatter Settings
formatter.exclude = []
formatter.unresolved_target_version = 3.10
formatter.per_file_target_version = {}
formatter.preview = disabled
formatter.line_width = 120
formatter.line_ending = auto
formatter.indent_style = space
formatter.indent_width = 4
formatter.quote_style = double
formatter.magic_trailing_comma = ignore
formatter.docstring_code_format = disabled
formatter.docstring_code_line_width = dynamic

# Analyze Settings
analyze.exclude = []
analyze.preview = disabled
analyze.target_version = 3.10
analyze.string_imports = disabled
analyze.extension = ExtensionMapping({})
analyze.include_dependencies = {}
analyze.type_checking_imports = true

Two folder workspace (bad)

Global:
executable = /home/vscode/.vscode-server/extensions/charliermarsh.ruff-2025.32.0-alpine-x64/bundled/libs/bin/ruff
version = 0.14.8
position_encoding = UTF16
workspace_root_folders = [
    "/X",
    "/X/external/Y",
]
indexed_configuration_files = [
    "/X/systemtests/pyproject.toml",
]
open_documents_len = 4
client_capabilities = ResolvedClientCapabilities {
    code_action_deferred_edit_resolution: true,
    apply_edit: true,
    document_changes: true,
    workspace_refresh: true,
    pull_diagnostics: true,
}

Open document:
uri = file:///X/systemtests/tests/common/fakes/wus.py
kind = Text
version = 1129
client_settings = ClientSettings {
    fix_all: true,
    organize_imports: true,
    lint_enable: true,
    disable_rule_comment_enable: true,
    fix_violation_enable: true,
    show_syntax_errors: true,
    editor_settings: EditorSettings {
        configuration: None,
        lint_preview: None,
        format_preview: None,
        format_backend: Some(
            Internal,
        ),
        select: None,
        extend_select: None,
        ignore: None,
        exclude: None,
        line_length: None,
        configuration_preference: EditorFirst,
    },
}
config_path = None

# General Settings
cache_dir = "/X/external/Y/.ruff_cache"
fix = false
fix_only = false
output_format = full
show_fixes = false
unsafe_fixes = hint

# File Resolver Settings
file_resolver.exclude = [
	".bzr",
	".direnv",
	".eggs",
	".git",
	".git-rewrite",
	".hg",
	".ipynb_checkpoints",
	".mypy_cache",
	".nox",
	".pants.d",
	".pyenv",
	".pytest_cache",
	".pytype",
	".ruff_cache",
	".svn",
	".tox",
	".venv",
	".vscode",
	"__pypackages__",
	"_build",
	"buck-out",
	"dist",
	"node_modules",
	"site-packages",
	"venv",
]
file_resolver.extend_exclude = []
file_resolver.force_exclude = false
file_resolver.include = [
	"*.py",
	"*.pyi",
	"*.ipynb",
	"**/pyproject.toml",
]
file_resolver.extend_include = []
file_resolver.respect_gitignore = true
file_resolver.project_root = "/X/external/Y"

# Linter Settings
linter.exclude = []
linter.project_root = "/X/external/Y"
linter.rules.enabled = [
	multiple-imports-on-one-line (E401),
	module-import-not-at-top-of-file (E402),
	multiple-statements-on-one-line-colon (E701),
	multiple-statements-on-one-line-semicolon (E702),
	useless-semicolon (E703),
	none-comparison (E711),
	true-false-comparison (E712),
	not-in-test (E713),
	not-is-test (E714),
	type-comparison (E721),
	bare-except (E722),
	lambda-assignment (E731),
	ambiguous-variable-name (E741),
	ambiguous-class-name (E742),
	ambiguous-function-name (E743),
	io-error (E902),
	unused-import (F401),
	import-shadowed-by-loop-var (F402),
	undefined-local-with-import-star (F403),
	late-future-import (F404),
	undefined-local-with-import-star-usage (F405),
	undefined-local-with-nested-import-star-usage (F406),
	future-feature-not-defined (F407),
	percent-format-invalid-format (F501),
	percent-format-expected-mapping (F502),
	percent-format-expected-sequence (F503),
	percent-format-extra-named-arguments (F504),
	percent-format-missing-argument (F505),
	percent-format-mixed-positional-and-named (F506),
	percent-format-positional-count-mismatch (F507),
	percent-format-star-requires-sequence (F508),
	percent-format-unsupported-format-character (F509),
	string-dot-format-invalid-format (F521),
	string-dot-format-extra-named-arguments (F522),
	string-dot-format-extra-positional-arguments (F523),
	string-dot-format-missing-arguments (F524),
	string-dot-format-mixing-automatic (F525),
	f-string-missing-placeholders (F541),
	multi-value-repeated-key-literal (F601),
	multi-value-repeated-key-variable (F602),
	expressions-in-star-assignment (F621),
	multiple-starred-expressions (F622),
	assert-tuple (F631),
	is-literal (F632),
	invalid-print-syntax (F633),
	if-tuple (F634),
	break-outside-loop (F701),
	continue-outside-loop (F702),
	yield-outside-function (F704),
	return-outside-function (F706),
	default-except-not-last (F707),
	forward-annotation-syntax-error (F722),
	redefined-while-unused (F811),
	undefined-name (F821),
	undefined-export (F822),
	undefined-local (F823),
	unused-variable (F841),
	unused-annotation (F842),
	raise-not-implemented (F901),
]
linter.rules.should_fix = [
	multiple-imports-on-one-line (E401),
	module-import-not-at-top-of-file (E402),
	multiple-statements-on-one-line-colon (E701),
	multiple-statements-on-one-line-semicolon (E702),
	useless-semicolon (E703),
	none-comparison (E711),
	true-false-comparison (E712),
	not-in-test (E713),
	not-is-test (E714),
	type-comparison (E721),
	bare-except (E722),
	lambda-assignment (E731),
	ambiguous-variable-name (E741),
	ambiguous-class-name (E742),
	ambiguous-function-name (E743),
	io-error (E902),
	unused-import (F401),
	import-shadowed-by-loop-var (F402),
	undefined-local-with-import-star (F403),
	late-future-import (F404),
	undefined-local-with-import-star-usage (F405),
	undefined-local-with-nested-import-star-usage (F406),
	future-feature-not-defined (F407),
	percent-format-invalid-format (F501),
	percent-format-expected-mapping (F502),
	percent-format-expected-sequence (F503),
	percent-format-extra-named-arguments (F504),
	percent-format-missing-argument (F505),
	percent-format-mixed-positional-and-named (F506),
	percent-format-positional-count-mismatch (F507),
	percent-format-star-requires-sequence (F508),
	percent-format-unsupported-format-character (F509),
	string-dot-format-invalid-format (F521),
	string-dot-format-extra-named-arguments (F522),
	string-dot-format-extra-positional-arguments (F523),
	string-dot-format-missing-arguments (F524),
	string-dot-format-mixing-automatic (F525),
	f-string-missing-placeholders (F541),
	multi-value-repeated-key-literal (F601),
	multi-value-repeated-key-variable (F602),
	expressions-in-star-assignment (F621),
	multiple-starred-expressions (F622),
	assert-tuple (F631),
	is-literal (F632),
	invalid-print-syntax (F633),
	if-tuple (F634),
	break-outside-loop (F701),
	continue-outside-loop (F702),
	yield-outside-function (F704),
	return-outside-function (F706),
	default-except-not-last (F707),
	forward-annotation-syntax-error (F722),
	redefined-while-unused (F811),
	undefined-name (F821),
	undefined-export (F822),
	undefined-local (F823),
	unused-variable (F841),
	unused-annotation (F842),
	raise-not-implemented (F901),
]
linter.per_file_ignores = {}
linter.safety_table.forced_safe = []
linter.safety_table.forced_unsafe = []
linter.unresolved_target_version = none
linter.per_file_target_version = {}
linter.preview = disabled
linter.explicit_preview_rules = false
linter.extension = ExtensionMapping({})
linter.allowed_confusables = []
linter.builtins = []
linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
linter.external = []
linter.ignore_init_module_imports = true
linter.logger_objects = []
linter.namespace_packages = []
linter.src = [
	"/X/external/Y",
	"/X/external/Y/src",
]
linter.tab_size = 4
linter.line_length = 88
linter.task_tags = [
	TODO,
	FIXME,
	XXX,
]
linter.typing_modules = []
linter.typing_extensions = true

# Linter Plugins
linter.flake8_annotations.mypy_init_return = false
linter.flake8_annotations.suppress_dummy_args = false
linter.flake8_annotations.suppress_none_returning = false
linter.flake8_annotations.allow_star_arg_any = false
linter.flake8_annotations.ignore_fully_untyped = false
linter.flake8_bandit.hardcoded_tmp_directory = [
	/tmp,
	/var/tmp,
	/dev/shm,
]
linter.flake8_bandit.check_typed_exception = false
linter.flake8_bandit.extend_markup_names = []
linter.flake8_bandit.allowed_markup_calls = []
linter.flake8_bugbear.extend_immutable_calls = []
linter.flake8_builtins.allowed_modules = []
linter.flake8_builtins.ignorelist = []
linter.flake8_builtins.strict_checking = false
linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
linter.flake8_copyright.author = none
linter.flake8_copyright.min_file_size = 0
linter.flake8_errmsg.max_string_length = 0
linter.flake8_gettext.functions_names = [
	_,
	gettext,
	ngettext,
]
linter.flake8_implicit_str_concat.allow_multiline = true
linter.flake8_import_conventions.aliases = {
	altair = alt,
	holoviews = hv,
	matplotlib = mpl,
	matplotlib.pyplot = plt,
	networkx = nx,
	numpy = np,
	numpy.typing = npt,
	pandas = pd,
	panel = pn,
	plotly.express = px,
	polars = pl,
	pyarrow = pa,
	seaborn = sns,
	tensorflow = tf,
	tkinter = tk,
	xml.etree.ElementTree = ET,
}
linter.flake8_import_conventions.banned_aliases = {}
linter.flake8_import_conventions.banned_from = []
linter.flake8_pytest_style.fixture_parentheses = false
linter.flake8_pytest_style.parametrize_names_type = tuple
linter.flake8_pytest_style.parametrize_values_type = list
linter.flake8_pytest_style.parametrize_values_row_type = tuple
linter.flake8_pytest_style.raises_require_match_for = [
	BaseException,
	Exception,
	ValueError,
	OSError,
	IOError,
	EnvironmentError,
	socket.error,
]
linter.flake8_pytest_style.raises_extend_require_match_for = []
linter.flake8_pytest_style.mark_parentheses = false
linter.flake8_quotes.inline_quotes = double
linter.flake8_quotes.multiline_quotes = double
linter.flake8_quotes.docstring_quotes = double
linter.flake8_quotes.avoid_escape = true
linter.flake8_self.ignore_names = [
	_make,
	_asdict,
	_replace,
	_fields,
	_field_defaults,
	_name_,
	_value_,
]
linter.flake8_tidy_imports.ban_relative_imports = "parents"
linter.flake8_tidy_imports.banned_api = {}
linter.flake8_tidy_imports.banned_module_level_imports = []
linter.flake8_type_checking.strict = false
linter.flake8_type_checking.exempt_modules = [
	typing,
	typing_extensions,
]
linter.flake8_type_checking.runtime_required_base_classes = []
linter.flake8_type_checking.runtime_required_decorators = []
linter.flake8_type_checking.quote_annotations = false
linter.flake8_unused_arguments.ignore_variadic_names = false
linter.isort.required_imports = []
linter.isort.combine_as_imports = false
linter.isort.force_single_line = false
linter.isort.force_sort_within_sections = false
linter.isort.detect_same_package = true
linter.isort.case_sensitive = false
linter.isort.force_wrap_aliases = false
linter.isort.force_to_top = []
linter.isort.known_modules = {}
linter.isort.order_by_type = true
linter.isort.relative_imports_order = furthest_to_closest
linter.isort.single_line_exclusions = []
linter.isort.split_on_trailing_comma = true
linter.isort.classes = []
linter.isort.constants = []
linter.isort.variables = []
linter.isort.no_lines_before = []
linter.isort.lines_after_imports = -1
linter.isort.lines_between_types = 0
linter.isort.forced_separate = []
linter.isort.section_order = [
	known { type = future },
	known { type = standard_library },
	known { type = third_party },
	known { type = first_party },
	known { type = local_folder },
]
linter.isort.default_section = known { type = third_party }
linter.isort.no_sections = false
linter.isort.from_first = false
linter.isort.length_sort = false
linter.isort.length_sort_straight = false
linter.mccabe.max_complexity = 10
linter.pep8_naming.ignore_names = [
	setUp,
	tearDown,
	setUpClass,
	tearDownClass,
	setUpModule,
	tearDownModule,
	asyncSetUp,
	asyncTearDown,
	setUpTestData,
	failureException,
	longMessage,
	maxDiff,
]
linter.pep8_naming.classmethod_decorators = []
linter.pep8_naming.staticmethod_decorators = []
linter.pycodestyle.max_line_length = 88
linter.pycodestyle.max_doc_length = none
linter.pycodestyle.ignore_overlong_task_comments = false
linter.pyflakes.extend_generics = []
linter.pyflakes.allowed_unused_imports = []
linter.pylint.allow_magic_value_types = [
	str,
	bytes,
]
linter.pylint.allow_dunder_method_names = []
linter.pylint.max_args = 5
linter.pylint.max_positional_args = 5
linter.pylint.max_returns = 6
linter.pylint.max_bool_expr = 5
linter.pylint.max_branches = 12
linter.pylint.max_statements = 50
linter.pylint.max_public_methods = 20
linter.pylint.max_locals = 15
linter.pylint.max_nested_blocks = 5
linter.pyupgrade.keep_runtime_typing = false
linter.ruff.parenthesize_tuple_in_subscript = false

# Formatter Settings
formatter.exclude = []
formatter.unresolved_target_version = 3.10
formatter.per_file_target_version = {}
formatter.preview = disabled
formatter.line_width = 88
formatter.line_ending = auto
formatter.indent_style = space
formatter.indent_width = 4
formatter.quote_style = double
formatter.magic_trailing_comma = respect
formatter.docstring_code_format = disabled
formatter.docstring_code_line_width = dynamic

# Analyze Settings
analyze.exclude = []
analyze.preview = disabled
analyze.target_version = 3.10
analyze.string_imports = disabled
analyze.extension = ExtensionMapping({})
analyze.include_dependencies = {}
analyze.type_checking_imports = true

[MichaReiser]

Hmm, I'm not entirely sure where things go wrong. Could you set the logLevel to debug and share the logs (see this guide here)

[OXINARF]

I'm providing the logs for the bad case, let me know if you want the logs for the good case too.

@MichaReiser I was trying to provide logs since loading the devcontainer, but, for some reason, even setting the debug as default on the client logs, didn't work. So, these logs are from restarting the server, after setting debug on the client logs output.

Ruff logs

2026-01-09 14:21:31.560 [info] Server: Stop requested
2026-01-09 14:21:31.560 [debug] Server State: Stopped
2026-01-09 14:21:31.568 [info] Using interpreter: /A-env/bin/python
2026-01-09 14:21:31.608 [info] Workspace settings for /X: {
    "nativeServer": "auto",
    "cwd": "/X",
    "workspace": "file:///X",
    "path": [],
    "ignoreStandardLibrary": true,
    "interpreter": [
        "/A-env/bin/python"
    ],
    "configuration": null,
    "importStrategy": "fromEnvironment",
    "codeAction": {
        "fixViolation": {
            "enable": true
        },
        "disableRuleComment": {
            "enable": true
        }
    },
    "lint": {
        "enable": true,
        "run": "onType",
        "args": [],
        "preview": null,
        "select": null,
        "extendSelect": null,
        "ignore": null
    },
    "format": {
        "args": [],
        "preview": null,
        "backend": "internal"
    },
    "enable": true,
    "organizeImports": true,
    "fixAll": true,
    "showNotifications": "off",
    "exclude": null,
    "lineLength": null,
    "configurationPreference": "editorFirst",
    "showSyntaxErrors": true,
    "logLevel": "debug",
    "logFile": null
}
2026-01-09 14:21:31.608 [info] Workspace settings for /X/external/Y: {
    "nativeServer": "auto",
    "cwd": "/X/external/Y",
    "workspace": "file:///X/external/Y",
    "path": [],
    "ignoreStandardLibrary": true,
    "interpreter": [
        "/opt/B/sysroots/x86_64-pokysdk-linux/usr/bin/python3"
    ],
    "configuration": null,
    "importStrategy": "fromEnvironment",
    "codeAction": {
        "fixViolation": {
            "enable": true
        },
        "disableRuleComment": {
            "enable": true
        }
    },
    "lint": {
        "enable": true,
        "run": "onType",
        "args": [],
        "preview": null,
        "select": null,
        "extendSelect": null,
        "ignore": null
    },
    "format": {
        "args": [],
        "preview": null,
        "backend": "internal"
    },
    "enable": true,
    "organizeImports": true,
    "fixAll": true,
    "showNotifications": "off",
    "exclude": null,
    "lineLength": null,
    "configurationPreference": "editorFirst",
    "showSyntaxErrors": true,
    "logLevel": "debug",
    "logFile": null
}
2026-01-09 14:21:31.613 [info] Global settings: {
    "nativeServer": "auto",
    "cwd": "/vscode/vscode-server/bin/linux-alpine/994fd12f8d3a5aa16f17d42c041e5809167e845a",
    "workspace": "/vscode/vscode-server/bin/linux-alpine/994fd12f8d3a5aa16f17d42c041e5809167e845a",
    "path": [],
    "ignoreStandardLibrary": true,
    "interpreter": [],
    "configuration": null,
    "importStrategy": "fromEnvironment",
    "codeAction": {
        "fixViolation": {
            "enable": true
        },
        "disableRuleComment": {
            "enable": true
        }
    },
    "lint": {
        "enable": true,
        "run": "onType",
        "args": []
    },
    "format": {
        "args": [],
        "backend": "internal"
    },
    "enable": true,
    "organizeImports": true,
    "fixAll": true,
    "showNotifications": "off",
    "configurationPreference": "editorFirst",
    "showSyntaxErrors": true,
    "logLevel": "debug"
}
2026-01-09 14:21:31.650 [info] Falling back to bundled executable: /home/vscode/.vscode-server/extensions/charliermarsh.ruff-2026.34.0-alpine-x64/bundled/libs/bin/ruff
2026-01-09 14:21:31.664 [info] Resolved 'ruff.nativeServer: auto' to use the native server
2026-01-09 14:21:31.666 [info] Found Ruff 0.14.11 at /home/vscode/.vscode-server/extensions/charliermarsh.ruff-2026.34.0-alpine-x64/bundled/libs/bin/ruff
2026-01-09 14:21:31.666 [info] Server run command: /home/vscode/.vscode-server/extensions/charliermarsh.ruff-2026.34.0-alpine-x64/bundled/libs/bin/ruff server
2026-01-09 14:21:31.666 [info] Server: Start requested.
2026-01-09 14:21:31.666 [debug] Server State: Starting
2026-01-09 14:21:31.679 [debug] Server State: Running

Ruff Language Server

2026-01-09 14:21:29.915460921 DEBUG request{id=3 method="textDocument/codeAction"}: enter
2026-01-09 14:21:31.560692964 DEBUG request{id=4 method="shutdown"}: enter
2026-01-09 14:21:31.560746090 DEBUG request{id=4 method="shutdown"}: Received shutdown request, waiting for shutdown notification
2026-01-09 14:21:31.561476964 DEBUG Received exit notification, exiting
2026-01-09 14:21:31.562638054  INFO Server shut down
[Error - 2:21:31 PM] Server process exited with code 0.
2026-01-09 14:21:31.680074581 DEBUG Negotiated position encoding: UTF16
2026-01-09 14:21:31.680152913 DEBUG Indexing settings for workspace: /X
2026-01-09 14:21:31.683180369 DEBUG Ignored path via `exclude`: /X/.vscode
2026-01-09 14:21:31.683245497 DEBUG Ignored path via `exclude`: /X/.git
2026-01-09 14:21:31.683866965 DEBUG Loaded settings from: `/X/systemtests/pyproject.toml` for `/X/systemtests`
2026-01-09 14:21:31.684107896 DEBUG Ignored path via `extend-exclude`: /X/systemtests/tests/common/protobuf/Z
2026-01-09 14:21:31.694074462  INFO Registering workspace: /X
2026-01-09 14:21:31.694109954 DEBUG Indexing settings for workspace: /X/external/Y
2026-01-09 14:21:31.702441755  INFO Registering workspace: /X/external/Y
2026-01-09 14:21:31.703081190 DEBUG notification{method="textDocument/didOpen"}: enter
2026-01-09 14:21:31.703284936 DEBUG request{id=1 method="textDocument/diagnostic"}: enter
2026-01-09 14:21:31.703345144 DEBUG request{id=1 method="textDocument/diagnostic"}: Included path via `include`: /X/systemtests/tests/common/fakes/wus.py
2026-01-09 14:21:31.704447181 DEBUG client_response{id=0 method="client/registerCapability"}: enter
2026-01-09 14:21:31.704477887  INFO client_response{id=0 method="client/registerCapability"}: Configuration file watcher successfully registered
2026-01-09 14:21:31.722031758 DEBUG request{id=2 method="textDocument/codeAction"}: enter

[MichaReiser]

Sorry, I should have asked before. What are the ruff language server logs when you open file:///X/systemtests/tests/common/fakes/wus.py

[OXINARF]

That's already there in the logs, it's the last part, starting at 2026-01-09 14:21:31.703081190 DEBUG notification{method="textDocument/didOpen"}: enter

[OXINARF]

@MichaReiser can I provide anything else to help with this problem?