change fixit config to 3.8

docs/guide/builtins.rst

@@ -728,6 +728,8 @@ Built-in Rules
     .. attribute:: AUTOFIX
         :type: Yes
 
+    .. attribute:: PYTHON_VERSION
+        :type: '>= 3.10'
 
     .. attribute:: VALID
 

pyproject.toml

@@ -78,7 +78,7 @@ target-version = ["py38"]
 
 [tool.fixit]
 enable = ["fixit.rules"]
-python-version = "3.10"
+python-version = "3.8"
 formatter = "ufmt"
 
 [[tool.fixit.overrides]]

src/fixit/rules/deprecated_abc_import.py

@@ -8,10 +8,10 @@
 import libcst as cst
 import libcst.matchers as m
 
-from fixit import Invalid, LintRule, Valid
-
 from libcst.metadata import ParentNodeProvider
 
+from fixit import Invalid, LintRule, Valid
+
 
 # The ABCs that have been moved to `collections.abc`
 ABCS = frozenset(

src/fixit/rules/no_namedtuple.py

@@ -6,11 +6,11 @@
 from typing import List, Optional, Sequence, Tuple
 
 import libcst as cst
-
-from fixit import Invalid, LintRule, Valid
 from libcst import ensure_type, MaybeSentinel, parse_expression
 from libcst.metadata import QualifiedName, QualifiedNameProvider, QualifiedNameSource
 
+from fixit import Invalid, LintRule, Valid
+
 
 class NoNamedTuple(LintRule):
     """

src/fixit/upgrade/deprecated_testcase_keywords.py

@@ -6,8 +6,6 @@
 
 from typing import Optional
 
-from fixit import Invalid, LintRule, Valid
-
 from libcst import (
     Arg,
     BaseExpression,
@@ -19,6 +17,8 @@
 )
 from libcst.metadata import QualifiedNameProvider
 
+from fixit import Invalid, LintRule, Valid
+
 
 class FixitDeprecatedTestCaseKeywords(LintRule):
     """