Use slots for all dataclasses

The minimum Python version was bumped to 3.10 so this is now safe.

scripts/wk/cfg/__init__.py

@@ -7,7 +7,6 @@ from . import log
 from . import main
 from . import music
 from . import net
-from . import python
 from . import repairs
 from . import setup
 from . import sources

scripts/wk/cfg/python.py

@@ -1,14 +0,0 @@
-"""WizardKit: Config - Python"""
-# vim: sts=2 sw=2 ts=2
-
-from sys import version_info
-
-DATACLASS_DECORATOR_KWARGS = {}
-if version_info.major >= 3 and version_info.minor >= 10:
-  DATACLASS_DECORATOR_KWARGS['slots'] = True
-
-
-if __name__ == '__main__':
-  print("This file is not meant to be called directly.")
-
-# vim: sts=2 sw=2 ts=2

scripts/wk/hw/disk.py

@@ -12,7 +12,6 @@ from dataclasses import dataclass, field
 from typing import Any
 
 from wk.cfg.main import KIT_NAME_SHORT
-from wk.cfg.python import DATACLASS_DECORATOR_KWARGS
 from wk.exe import get_json_from_command, run_program
 from wk.hw.test import Test
 from wk.hw.smart import (
@@ -32,7 +31,7 @@ WK_LABEL_REGEX = re.compile(
 
 
 # Classes
-@dataclass(**DATACLASS_DECORATOR_KWARGS)
+@dataclass(slots=True)
 class Disk:
   """Object for tracking disk specific data."""
   attributes: dict[Any, dict] =         field(init=False, default_factory=dict)

scripts/wk/hw/system.py

@@ -9,7 +9,6 @@ from dataclasses import dataclass, field
 from typing import Any
 
 from wk.cfg.hw import KNOWN_RAM_VENDOR_IDS
-from wk.cfg.python import DATACLASS_DECORATOR_KWARGS
 from wk.exe import get_json_from_command, run_program
 from wk.hw.test import Test
 from wk.std import PLATFORM, bytes_to_string, string_to_bytes
@@ -20,7 +19,7 @@ from wk.ui import ansi
 LOG = logging.getLogger(__name__)
 
 
-@dataclass(**DATACLASS_DECORATOR_KWARGS)
+@dataclass(slots=True)
 class System:
   """Object for tracking system specific hardware data."""
   cpu_description: str =        field(init=False)

scripts/wk/hw/test.py

@@ -4,9 +4,7 @@
 from dataclasses import dataclass, field
 from typing import Any, Callable
 
-from wk.cfg.python import DATACLASS_DECORATOR_KWARGS
-
-@dataclass(**DATACLASS_DECORATOR_KWARGS)
+@dataclass(slots=True)
 class Test:
   """Object for tracking test specific data."""
   dev: Any
@@ -28,7 +26,7 @@ class Test:
     self.status = status
 
 
-@dataclass(**DATACLASS_DECORATOR_KWARGS)
+@dataclass(slots=True)
 class TestGroup:
   """Object for tracking groups of tests."""
   name: str