diff --git a/stdlib/distutils/command/check.pyi b/stdlib/distutils/command/check.pyi
index c67e4cbfdfe0..e69627d20c7a 100644
--- a/stdlib/distutils/command/check.pyi
+++ b/stdlib/distutils/command/check.pyi
@@ -1,4 +1,4 @@
-from typing import Any, ClassVar, Literal
+from typing import Any, ClassVar, Final, Literal
 from typing_extensions import TypeAlias
 
 from ..cmd import Command
@@ -22,7 +22,7 @@ class SilentReporter(_Reporter):
     ) -> None: ...
     def system_message(self, level, message, *children, **kwargs): ...
 
-HAS_DOCUTILS: bool
+HAS_DOCUTILS: Final[bool]
 
 class check(Command):
     description: str
diff --git a/stdlib/distutils/command/config.pyi b/stdlib/distutils/command/config.pyi
index 2f528c2c290b..b0910091d5b6 100644
--- a/stdlib/distutils/command/config.pyi
+++ b/stdlib/distutils/command/config.pyi
@@ -1,12 +1,12 @@
 from _typeshed import StrOrBytesPath
 from collections.abc import Sequence
 from re import Pattern
-from typing import Any, ClassVar, Literal
+from typing import Any, ClassVar, Final, Literal
 
 from ..ccompiler import CCompiler
 from ..cmd import Command
 
-LANG_EXT: dict[str, str]
+LANG_EXT: Final[dict[str, str]]
 
 class config(Command):
     description: str
diff --git a/stdlib/distutils/command/install.pyi b/stdlib/distutils/command/install.pyi
index c55dc7ee17bc..24a4eff2fb10 100644
--- a/stdlib/distutils/command/install.pyi
+++ b/stdlib/distutils/command/install.pyi
@@ -1,11 +1,12 @@
 import sys
 from collections.abc import Callable
-from typing import Any, ClassVar, Final
+from typing import Any, ClassVar, Final, Literal
 
 from ..cmd import Command
 
-HAS_USER_SITE: bool
-SCHEME_KEYS: tuple[str, ...]
+HAS_USER_SITE: Final[bool]
+
+SCHEME_KEYS: Final[tuple[Literal["purelib"], Literal["platlib"], Literal["headers"], Literal["scripts"], Literal["data"]]]
 INSTALL_SCHEMES: Final[dict[str, dict[str, str]]]
 
 if sys.version_info < (3, 10):
diff --git a/stdlib/distutils/command/install_lib.pyi b/stdlib/distutils/command/install_lib.pyi
index 718d082b7b07..149ecae89781 100644
--- a/stdlib/distutils/command/install_lib.pyi
+++ b/stdlib/distutils/command/install_lib.pyi
@@ -1,8 +1,8 @@
-from typing import Any, ClassVar
+from typing import Any, ClassVar, Final
 
 from ..cmd import Command
 
-PYTHON_SOURCE_EXTENSION: str
+PYTHON_SOURCE_EXTENSION: Final = ".py"
 
 class install_lib(Command):
     description: str
diff --git a/stdlib/distutils/core.pyi b/stdlib/distutils/core.pyi
index f3c434df0b1a..a4d21f8ddd7b 100644
--- a/stdlib/distutils/core.pyi
+++ b/stdlib/distutils/core.pyi
@@ -3,9 +3,9 @@ from collections.abc import Mapping
 from distutils.cmd import Command as Command
 from distutils.dist import Distribution as Distribution
 from distutils.extension import Extension as Extension
-from typing import Any, Literal
+from typing import Any, Final, Literal
 
-USAGE: str
+USAGE: Final[str]
 
 def gen_usage(script_name: StrOrBytesPath) -> str: ...
 
diff --git a/stdlib/distutils/cygwinccompiler.pyi b/stdlib/distutils/cygwinccompiler.pyi
index 5f2e623eeff6..80924d63e471 100644
--- a/stdlib/distutils/cygwinccompiler.pyi
+++ b/stdlib/distutils/cygwinccompiler.pyi
@@ -1,20 +1,20 @@
 from distutils.unixccompiler import UnixCCompiler
 from distutils.version import LooseVersion
 from re import Pattern
-from typing import Literal
+from typing import Final, Literal
 
 def get_msvcr() -> list[str] | None: ...
 
 class CygwinCCompiler(UnixCCompiler): ...
 class Mingw32CCompiler(CygwinCCompiler): ...
 
-CONFIG_H_OK: str
-CONFIG_H_NOTOK: str
-CONFIG_H_UNCERTAIN: str
+CONFIG_H_OK: Final = "ok"
+CONFIG_H_NOTOK: Final = "not ok"
+CONFIG_H_UNCERTAIN: Final = "uncertain"
 
 def check_config_h() -> tuple[Literal["ok", "not ok", "uncertain"], str]: ...
 
-RE_VERSION: Pattern[bytes]
+RE_VERSION: Final[Pattern[bytes]]
 
 def get_versions() -> tuple[LooseVersion | None, ...]: ...
 def is_cygwingcc() -> bool: ...
diff --git a/stdlib/distutils/fancy_getopt.pyi b/stdlib/distutils/fancy_getopt.pyi
index f9916d4511b2..c4d37419ed06 100644
--- a/stdlib/distutils/fancy_getopt.pyi
+++ b/stdlib/distutils/fancy_getopt.pyi
@@ -1,15 +1,15 @@
 from collections.abc import Iterable, Mapping
 from re import Pattern
-from typing import Any, overload
+from typing import Any, Final, overload
 from typing_extensions import TypeAlias
 
 _Option: TypeAlias = tuple[str, str | None, str]
 _GR: TypeAlias = tuple[list[str], OptionDummy]
 
-longopt_pat: str
-longopt_re: Pattern[str]
-neg_alias_re: Pattern[str]
-longopt_xlate: dict[int, int]
+longopt_pat: Final = r"[a-zA-Z](?:[a-zA-Z0-9-]*)"
+longopt_re: Final[Pattern[str]]
+neg_alias_re: Final[Pattern[str]]
+longopt_xlate: Final[dict[int, int]]
 
 class FancyGetopt:
     def __init__(self, option_table: list[_Option] | None = None) -> None: ...
@@ -25,7 +25,7 @@ def fancy_getopt(
     options: list[_Option], negative_opt: Mapping[_Option, _Option], object: Any, args: list[str] | None
 ) -> list[str] | _GR: ...
 
-WS_TRANS: dict[int, str]
+WS_TRANS: Final[dict[int, str]]
 
 def wrap_text(text: str, width: int) -> list[str]: ...
 def translate_longopt(opt: str) -> str: ...
diff --git a/stdlib/distutils/log.pyi b/stdlib/distutils/log.pyi
index 14ed8d8aefa8..0ea135c28371 100644
--- a/stdlib/distutils/log.pyi
+++ b/stdlib/distutils/log.pyi
@@ -1,10 +1,10 @@
-from typing import Any
+from typing import Any, Final
 
-DEBUG: int
-INFO: int
-WARN: int
-ERROR: int
-FATAL: int
+DEBUG: Final = 1
+INFO: Final = 2
+WARN: Final = 3
+ERROR: Final = 4
+FATAL: Final = 5
 
 class Log:
     def __init__(self, threshold: int = 3) -> None: ...
diff --git a/stdlib/distutils/sysconfig.pyi b/stdlib/distutils/sysconfig.pyi
index da72e3275fe3..4a9c45eb562a 100644
--- a/stdlib/distutils/sysconfig.pyi
+++ b/stdlib/distutils/sysconfig.pyi
@@ -1,15 +1,15 @@
 import sys
 from collections.abc import Mapping
 from distutils.ccompiler import CCompiler
-from typing import Literal, overload
+from typing import Final, Literal, overload
 from typing_extensions import deprecated
 
-PREFIX: str
-EXEC_PREFIX: str
-BASE_PREFIX: str
-BASE_EXEC_PREFIX: str
-project_base: str
-python_build: bool
+PREFIX: Final[str]
+EXEC_PREFIX: Final[str]
+BASE_PREFIX: Final[str]
+BASE_EXEC_PREFIX: Final[str]
+project_base: Final[str]
+python_build: Final[bool]
 
 def expand_makefile_vars(s: str, vars: Mapping[str, str]) -> str: ...
 @overload