fix linter configuration

pyproject.toml

@@ -69,9 +69,8 @@ full = [
   'nmod_wiki[all]',
 ]
 stubs = [
-  'isort',
   'mypy',
-  'ruff>=0.1.8',
+  'ruff>=0.6.0',
 ]
 style = [
   'bibclean',

tools/stubgen.py

@@ -4,7 +4,6 @@
 from importlib import import_module
 from pathlib import Path
 
-import isort
 from mypy import stubgen
 
 import nmod_wiki
@@ -33,7 +32,6 @@
 )
 stubs = list(directory.rglob("*.pyi"))
 config = str(directory.parent / "pyproject.toml")
-config_isort = isort.settings.Config(config)
 
 # expand docstrings and inject into stub files
 for stub in stubs:
@@ -59,9 +57,12 @@
                 method.body[0].value.value = docstring
     unparsed = ast.unparse(module_ast)
     stub.write_text(unparsed, encoding="utf-8")
-    # sort imports
-    isort.file(stub, config=config_isort)
 
 # run ruff to improve stub style
+execution = subprocess.run(
+    ["ruff", "check", str(directory), "--fix", "--unsafe-fixes", "--config", config]
+)
+if execution.returncode:
+    sys.exit(execution.returncode)
 execution = subprocess.run(["ruff", "format", str(directory), "--config", config])
 sys.exit(execution.returncode)