Using ABC as class basis for deprecated meta

src/icmtoolchain/language.py

@@ -1,4 +1,4 @@
-from abc import ABCMeta, abstractmethod
+from abc import ABC, abstractmethod
 from copy import deepcopy
 from dataclasses import dataclass, field
 from os.path import abspath, basename, dirname, isdir, isfile, join
@@ -65,7 +65,7 @@ def get_language_directories(compile_type: str, language_config: Config, propert
 	return configurables
 
 @dataclass
-class FlushableMakeProjectData(metaclass=ABCMeta):
+class FlushableMakeProjectData(ABC):
 	@abstractmethod
 	def flush_to_output(self, directory: str) -> int:
 		...
@@ -224,7 +224,7 @@ PROJECT_TYPE_MOD = 1
 PROJECT_TYPE_MODPACK = 2
 PROJECT_TYPE_PACK = 3
 
-class MakeDataConfig(FileConfig, RuleSetConfig, RuleSetHolder, metaclass=ABCMeta):
+class MakeDataConfig(FileConfig, RuleSetConfig, RuleSetHolder, ABC):
 	defaults: FileConfig
 	current_project: Final[str]
 	project_unique_name: Final[str]

src/icmtoolchain/project_graph.py

@@ -1,6 +1,6 @@
 import json
 import os
-from abc import ABCMeta, abstractmethod
+from abc import ABC, abstractmethod
 from functools import cmp_to_key
 from itertools import chain
 from os.path import abspath, basename, exists, isdir, isfile, join
@@ -15,7 +15,7 @@ from .utils import ensure_not_whitespace, remove_tree
 
 AVAILABLE_ARTIFACTS: Dict[Union[type, Callable[[Any], bool]], Union[Callable[[Any], 'Artifact'], Type['Artifact']]] = {}
 
-class Artifact(metaclass=ABCMeta):
+class Artifact(ABC):
 	def __init__(self, description: Any) -> None:
 		self.description = description
 

src/icmtoolchain/prompt.py

@@ -1,4 +1,4 @@
-from abc import ABCMeta, abstractmethod
+from abc import ABC, abstractmethod
 from typing import (Any, Callable, Dict, Iterable, List, Optional, Sequence,
                     Sized, Tuple, Union, cast)
 
@@ -19,7 +19,7 @@ from .shell import (Editable, Interactable, Selectable, attention, failure,
                     frozen, get_toolchain_style, pretty_print, success)
 
 
-class Feedback(metaclass=ABCMeta):
+class Feedback(ABC):
 	on_pre_request: Optional[Callable[['Feedback'], None]]
 
 	def __init__(self, prompt: AnyFormattedText = "Ooh, was it supposed to be a query here?", fallback: object = None) -> None:

src/icmtoolchain/rule_set.py

@@ -1,4 +1,4 @@
-from abc import ABCMeta
+from abc import ABC
 from itertools import chain
 from typing import (Any, Dict, MutableMapping, MutableSequence, MutableSet,
                     Optional)
@@ -93,7 +93,7 @@ TOOLCHAIN_RULE_SET.append_set("package_type", "develop", "release")
 TOOLCHAIN_RULE_SET.append_set("java_compiler", "javac", "ecj", "gradle")
 TOOLCHAIN_RULE_SET.append_set("native_architecture", "arm", "arm64", "x86", "x86_64")
 
-class RuleSetHolder(metaclass=ABCMeta):
+class RuleSetHolder(ABC):
 	rule_set: RuleSet
 	properties: MutableSequence[str]