diff --git a/src/lifeblood/basenode.py b/src/lifeblood/basenode.py
index 8b16650f..fc70284e 100644
--- a/src/lifeblood/basenode.py
+++ b/src/lifeblood/basenode.py
@@ -4,16 +4,13 @@
 from logging import Logger
 from .nodethings import ProcessingResult
 from .node_ui import NodeUi
-from .node_parameters import  ParameterNotFound, Parameter
+from .node_parameters import ParameterNotFound, Parameter
 from .processingcontext import ProcessingContext
 from .logging import get_logger
 from .plugin_info import PluginInfo, empty_plugin_info
 from .nodegraph_holder_base import NodeGraphHolderBase
 from .node_ui_callback_receiver_base import NodeUiCallbackReceiverBase
 
-# reexport
-from .nodethings import ProcessingError
-
 from typing import Iterable
 
 
diff --git a/src/lifeblood/broadcasting.py b/src/lifeblood/broadcasting.py
index 1f8e421c..7b6e1def 100644
--- a/src/lifeblood/broadcasting.py
+++ b/src/lifeblood/broadcasting.py
@@ -1,15 +1,10 @@
 import asyncio
 import socket
-from string import ascii_letters
-import random
 import struct
-
 from . import logging
 from .nethelpers import get_localhost
 from .defaults import broadcast_port as default_broadcast_port
 
-from . import os_based_cheats
-
 from typing import Tuple, Union, Optional, Callable, Coroutine, Any
 
 Address = Tuple[str, int]
diff --git a/src/lifeblood/hardware_resources.py b/src/lifeblood/hardware_resources.py
index 9934984b..33c0d859 100644
--- a/src/lifeblood/hardware_resources.py
+++ b/src/lifeblood/hardware_resources.py
@@ -1,5 +1,3 @@
-import psutil
-import copy
 import re
 import json
 from .misc import get_unique_machine_id
@@ -128,11 +126,11 @@ def __repr__(self):
         parts = []
         for res_name, res in self.__resources.items():
             parts.append(f'{res_name}: {res.value}')
-        for dev_type, dev_res in self.__dev_resources.items():
+        for dev_type, dev_name, dev_res in self.__dev_resources:
             dev_parts = []
             for res_name, res in dev_res.items():
                 dev_parts.append(f'{res_name}: {res.value}')
-            parts.append(f'device({dev_type})[{", ".join(dev_parts)}]')
+            parts.append(f'device(type:"{dev_type}" name:"{dev_name}")[{", ".join(dev_parts)}]')
 
         return f'<hwid={self.hwid}, {", ".join(parts)}>'
 
diff --git a/src/lifeblood/local_notifier.py b/src/lifeblood/local_notifier.py
index 6ff7c0f7..f726f97f 100644
--- a/src/lifeblood/local_notifier.py
+++ b/src/lifeblood/local_notifier.py
@@ -2,10 +2,9 @@
 import json
 import uuid
 from . import broadcasting
-from . import logging
 from .nethelpers import get_localhost
 
-from typing import Optional, Tuple, Callable, Coroutine, Any
+from typing import Optional, Tuple, Callable, Coroutine
 from .logging import get_logger
 
 
diff --git a/src/lifeblood/main_scheduler.py b/src/lifeblood/main_scheduler.py
index dadc8550..79092486 100644
--- a/src/lifeblood/main_scheduler.py
+++ b/src/lifeblood/main_scheduler.py
@@ -12,7 +12,7 @@
 from .scheduler_config_provider_file import SchedulerConfigProviderFileOverrides
 from . import logging
 
-from typing import Iterable, List, Optional, Tuple, Union
+from typing import Iterable, List, Tuple, Union
 
 
 def __construct_plugin_paths(custom_plugins_path: Union[None, str, Path], plugin_search_locations: Iterable[Union[str, Path]]) -> List[Tuple[Path, str]]:
diff --git a/src/lifeblood/misc.py b/src/lifeblood/misc.py
index d3f439d4..dd759f07 100644
--- a/src/lifeblood/misc.py
+++ b/src/lifeblood/misc.py
@@ -1,6 +1,5 @@
 import os
 import asyncio
-import random
 import uuid
 import time
 import psutil
@@ -8,7 +7,7 @@
 from contextlib import contextmanager, asynccontextmanager
 from .logging import get_logger, logging
 
-from typing import List, Optional, Union
+from typing import Union
 
 
 class DummyLock:
diff --git a/src/lifeblood/names.py b/src/lifeblood/names.py
index f407bb6f..794103bc 100644
--- a/src/lifeblood/names.py
+++ b/src/lifeblood/names.py
@@ -1,5 +1,3 @@
-import re
-
 from lifeblood.logging import get_logger
 from typing import Iterable
 
diff --git a/src/lifeblood/net_messages/impl/message_protocol.py b/src/lifeblood/net_messages/impl/message_protocol.py
index 2fd38c68..328f99c6 100644
--- a/src/lifeblood/net_messages/impl/message_protocol.py
+++ b/src/lifeblood/net_messages/impl/message_protocol.py
@@ -1,14 +1,11 @@
 import asyncio
-import uuid
 import struct
 
 from ..logging import get_logger
 from ..stream_wrappers import MessageReceiveStream
 from ..messages import Message
-from ..queue import MessageQueue
 from ..address import DirectAddress
-from ..exceptions import MessageReceivingError, NoMessageError, MessageTransferError, MessageTransferTimeoutError
-from ..interfaces import MessageStreamFactory
+from ..exceptions import NoMessageError, MessageTransferError, MessageTransferTimeoutError
 
 from typing import Callable, Awaitable, Tuple
 
diff --git a/src/lifeblood/net_messages/impl/tcp_message_processor.py b/src/lifeblood/net_messages/impl/tcp_message_processor.py
index c1e1dfdf..2ba09105 100644
--- a/src/lifeblood/net_messages/impl/tcp_message_processor.py
+++ b/src/lifeblood/net_messages/impl/tcp_message_processor.py
@@ -1,4 +1,3 @@
-import asyncio
 from ..message_processor import MessageProcessorBase
 from ..message_handler import MessageHandlerBase
 from ..messages import Message
diff --git a/src/lifeblood/net_messages/impl/tcp_message_receiver.py b/src/lifeblood/net_messages/impl/tcp_message_receiver.py
index 0709e589..dbcf0964 100644
--- a/src/lifeblood/net_messages/impl/tcp_message_receiver.py
+++ b/src/lifeblood/net_messages/impl/tcp_message_receiver.py
@@ -1,6 +1,6 @@
 import asyncio
 from .message_protocol import MessageProtocol, IProtocolInstanceCounter
-from ..interfaces import MessageReceiver, MessageStreamFactory
+from ..interfaces import MessageReceiver
 from ..messages import Message
 from ..address import DirectAddress
 from ..logging import get_logger
diff --git a/src/lifeblood/net_messages/impl/tcp_message_stream_factory.py b/src/lifeblood/net_messages/impl/tcp_message_stream_factory.py
index 36485b6c..7deca6e9 100644
--- a/src/lifeblood/net_messages/impl/tcp_message_stream_factory.py
+++ b/src/lifeblood/net_messages/impl/tcp_message_stream_factory.py
@@ -7,7 +7,7 @@
 from ..exceptions import MessageTransferError, MessageTransferTimeoutError
 from ..interfaces import MessageStreamFactory
 from ..stream_wrappers import MessageSendStream, MessageSendStreamBase
-from ..address import DirectAddress, AddressChain
+from ..address import DirectAddress
 from ..defaults import default_stream_timeout
 from ..messages import Message
 
diff --git a/src/lifeblood/net_messages/interfaces.py b/src/lifeblood/net_messages/interfaces.py
index 3dfad908..89d1c211 100644
--- a/src/lifeblood/net_messages/interfaces.py
+++ b/src/lifeblood/net_messages/interfaces.py
@@ -1,6 +1,6 @@
 from .messages import Message
-from .message_stream import MessageSendStreamBase, MessageReceiveStreamBase
-from .address import DirectAddress, AddressChain
+from .message_stream import MessageSendStreamBase
+from .address import DirectAddress
 
 from typing import Callable, Awaitable
 
diff --git a/src/lifeblood/net_messages/messages.py b/src/lifeblood/net_messages/messages.py
index bd8253f7..c3420b99 100644
--- a/src/lifeblood/net_messages/messages.py
+++ b/src/lifeblood/net_messages/messages.py
@@ -1,10 +1,8 @@
-import asyncio
-import struct
 import uuid
 from .enums import MessageType
 from .address import AddressChain
 
-from typing import Optional, Tuple, Union
+from typing import Optional, Union
 
 
 class MessageInterface:
@@ -70,17 +68,5 @@ def set_message_destination(self, destination: AddressChain):
     def set_message_source(self, source: AddressChain):
         self.__source = source
 
-    def create_reply_message(self, data: bytes = b''):
-        if self.__message_type in (MessageType.SESSION_START, MessageType.SESSION_MESSAGE):
-            return_type = MessageType.SESSION_MESSAGE
-        elif self.__message_type == MessageType.SESSION_END:
-            raise RuntimeError('cannot reply to session end message')
-        elif self.__message_type == MessageType.DEFAULT_MESSAGE:
-            return_type = self.__message_type
-        else:
-            raise RuntimeError(f'unknown message type {self.__message_type}')
-        return Message(data, return_type, self.__destination, self.__source, self.__session)
-
     def message_type(self) -> MessageType:
         return self.__message_type
-
diff --git a/src/lifeblood/net_messages/stream_wrappers.py b/src/lifeblood/net_messages/stream_wrappers.py
index 4c61776f..e9ba297b 100644
--- a/src/lifeblood/net_messages/stream_wrappers.py
+++ b/src/lifeblood/net_messages/stream_wrappers.py
@@ -6,7 +6,7 @@
 from .message_stream import MessageSendStreamBase, MessageReceiveStreamBase
 from .enums import MessageType
 from .address import AddressChain, DirectAddress
-from .exceptions import MessageReceivingError, MessageSendingError, MessageTransferTimeoutError, NoMessageError
+from .exceptions import MessageSendingError, MessageTransferTimeoutError, NoMessageError
 from .defaults import default_stream_timeout
 
 from typing import Optional, Tuple, Union
diff --git a/src/lifeblood/node_visualization_classes.py b/src/lifeblood/node_visualization_classes.py
index d9468dea..506354fa 100644
--- a/src/lifeblood/node_visualization_classes.py
+++ b/src/lifeblood/node_visualization_classes.py
@@ -1,7 +1,4 @@
 
-from typing import Tuple
-
-
 class NodeColorScheme:
     def __init__(self):
         self.__main_color = (0, 0, 0)
diff --git a/src/lifeblood/pulse_checker.py b/src/lifeblood/pulse_checker.py
index 7e385de9..d1ec04c9 100644
--- a/src/lifeblood/pulse_checker.py
+++ b/src/lifeblood/pulse_checker.py
@@ -5,7 +5,7 @@
 from .net_messages.message_processor import MessageProcessorBase
 from .net_messages.exceptions import MessageTransferError
 
-from typing import Tuple, Callable, Coroutine
+from typing import Callable, Coroutine
 
 
 class PulseChecker:
diff --git a/src/lifeblood/scheduler/data_access.py b/src/lifeblood/scheduler/data_access.py
index 7f746aa9..b47f0a18 100644
--- a/src/lifeblood/scheduler/data_access.py
+++ b/src/lifeblood/scheduler/data_access.py
@@ -17,7 +17,7 @@
 from ..worker_resource_definition import WorkerResourceDataType
 from ..invocationjob import InvocationResources
 
-from typing import Any, Dict, Iterable, List, Optional, Tuple, Type, Union
+from typing import Any, Dict, Iterable, Optional, Tuple, Union
 
 SCHEDULER_DB_FORMAT_VERSION = 5
 
diff --git a/src/lifeblood/scheduler/pinger.py b/src/lifeblood/scheduler/pinger.py
index 0af25f19..5406e174 100644
--- a/src/lifeblood/scheduler/pinger.py
+++ b/src/lifeblood/scheduler/pinger.py
@@ -3,7 +3,7 @@
 import time
 from .. import logging
 from ..worker_message_processor_client import WorkerControlClient
-from ..enums import WorkerState, InvocationState, WorkerPingState, WorkerPingReply
+from ..enums import WorkerState, WorkerPingState, WorkerPingReply
 from .scheduler_component_base import SchedulerComponentBase
 from ..net_messages.address import AddressChain
 from ..net_messages.exceptions import MessageTransferError, MessageTransferTimeoutError
diff --git a/src/lifeblood/scheduler/task_processor.py b/src/lifeblood/scheduler/task_processor.py
index b7b4b074..483f9bdf 100644
--- a/src/lifeblood/scheduler/task_processor.py
+++ b/src/lifeblood/scheduler/task_processor.py
@@ -17,12 +17,13 @@
 from ..attribute_serialization import serialize_attributes, deserialize_attributes
 from ..exceptions import *
 from .. import aiosqlite_overlay
-from ..ui_events import TaskData, TaskDelta
+from ..ui_events import TaskDelta
+from ..ui_protocol_data import TaskData
 from ..net_messages.address import AddressChain
 
 from .scheduler_component_base import SchedulerComponentBase
 
-from typing import List, Optional, TYPE_CHECKING
+from typing import List, TYPE_CHECKING
 
 if TYPE_CHECKING:  # TODO: maybe separate a subset of scheduler's methods to smth like SchedulerData class, or idunno, for now no obvious way to separate, so having a reference back
     from .scheduler_core import SchedulerCore
diff --git a/src/lifeblood/scheduler/ui_state_accessor.py b/src/lifeblood/scheduler/ui_state_accessor.py
index b9224a46..7c73aca8 100644
--- a/src/lifeblood/scheduler/ui_state_accessor.py
+++ b/src/lifeblood/scheduler/ui_state_accessor.py
@@ -5,12 +5,12 @@
 import time
 from enum import Enum
 from ..logging import get_logger
-from ..misc import atimeit, aperformance_measurer
+from ..misc import aperformance_measurer
 from ..enums import InvocationState, TaskState, TaskGroupArchivedState, WorkerState, WorkerType, UIEventType
 from ..exceptions import NotSubscribedError
 from ..scheduler_event_log import SchedulerEventLog
 from ..ui_events import TaskEvent, TaskFullState, TasksUpdated, TasksRemoved, TasksChanged
-from ..ui_protocol_data import TaskBatchData, UiData, TaskGroupData, TaskGroupBatchData, TaskGroupStatisticsData, \
+from ..ui_protocol_data import TaskBatchData, TaskGroupData, TaskGroupBatchData, TaskGroupStatisticsData, \
     NodeGraphStructureData, WorkerBatchData, WorkerData, WorkerResource, WorkerResourceType, WorkerResources, NodeConnectionData, NodeData, TaskData, TaskDelta, \
     WorkerDevice, WorkerDeviceResource
 from .scheduler_component_base import SchedulerComponentBase
diff --git a/src/lifeblood/scheduler_config_provider_file.py b/src/lifeblood/scheduler_config_provider_file.py
index 1a7002b4..f49b4410 100644
--- a/src/lifeblood/scheduler_config_provider_file.py
+++ b/src/lifeblood/scheduler_config_provider_file.py
@@ -7,7 +7,7 @@
 from .config import Config
 from .nethelpers import all_interfaces
 from .exceptions import SchedulerConfigurationError
-from .config import create_default_user_config_file, get_local_scratch_path
+from .config import get_local_scratch_path
 from .text import escape
 
 from typing import Dict, List, Mapping, Optional, Tuple
diff --git a/src/lifeblood/scheduler_event_log.py b/src/lifeblood/scheduler_event_log.py
index 342426f2..665764bc 100644
--- a/src/lifeblood/scheduler_event_log.py
+++ b/src/lifeblood/scheduler_event_log.py
@@ -2,7 +2,7 @@
 from .ui_events import SchedulerEvent
 from .enums import UIEventType
 
-from typing import Dict, List, Optional, Set, Tuple
+from typing import Dict, List, Optional, Tuple
 
 
 logger = logging.getLogger(__name__)
diff --git a/src/lifeblood/scheduler_task_protocol.py b/src/lifeblood/scheduler_task_protocol.py
index 8b5a6648..186331a0 100644
--- a/src/lifeblood/scheduler_task_protocol.py
+++ b/src/lifeblood/scheduler_task_protocol.py
@@ -1,16 +1,11 @@
 import struct
 import asyncio
-import aiofiles
-from enum import Enum
 import pickle
 import json
 
 from . import logging
-from . import invocationjob
 from .taskspawn import TaskSpawn
-from .enums import WorkerType, SpawnStatus, WorkerState
-from .hardware_resources import HardwareResources
-from .worker_metadata import WorkerMetadata
+from .enums import SpawnStatus, WorkerState
 from .scheduler.scheduler_core import SchedulerCore
 
 from typing import Optional, Tuple
diff --git a/src/lifeblood/ui_events.py b/src/lifeblood/ui_events.py
index 5f89072c..ab23c39d 100644
--- a/src/lifeblood/ui_events.py
+++ b/src/lifeblood/ui_events.py
@@ -3,11 +3,11 @@
 import struct
 from dataclasses import dataclass, field
 from .buffered_connection import BufferedReader
-from .ui_protocol_data import TaskData, TaskDelta, TaskBatchData, UiData
+from .ui_protocol_data import TaskDelta, TaskBatchData
 from .buffer_serializable import IBufferSerializable
 from .enums import UIEventType
 
-from typing import ClassVar, Dict, Iterable, List, Tuple, Type, Union
+from typing import ClassVar, Dict, Iterable, List, Tuple, Type
 
 
 @dataclass
diff --git a/src/lifeblood/ui_protocol_data.py b/src/lifeblood/ui_protocol_data.py
index 6592c4ae..87d5ff1f 100644
--- a/src/lifeblood/ui_protocol_data.py
+++ b/src/lifeblood/ui_protocol_data.py
@@ -10,7 +10,7 @@
 from dataclasses import dataclass
 from enum import Enum
 
-from typing import Dict, List, Tuple, Type, Optional, Set, Union
+from typing import Dict, List, Type, Optional, Set, Union
 
 
 def _serialize_string(s: str, stream: BufferedIOBase) -> int:
diff --git a/src/lifeblood/worker_resource_definition.py b/src/lifeblood/worker_resource_definition.py
index 657e357d..28e82259 100644
--- a/src/lifeblood/worker_resource_definition.py
+++ b/src/lifeblood/worker_resource_definition.py
@@ -1,7 +1,7 @@
 from dataclasses import dataclass
 from enum import Enum
 
-from typing import Dict, Union, Set, Tuple
+from typing import Union, Tuple
 
 
 class WorkerResourceDataType(Enum):
diff --git a/src/lifeblood_testing_common/nodes_common.py b/src/lifeblood_testing_common/nodes_common.py
index 1b4ca963..405e5535 100644
--- a/src/lifeblood_testing_common/nodes_common.py
+++ b/src/lifeblood_testing_common/nodes_common.py
@@ -1,6 +1,4 @@
 import asyncio
-import time
-from dataclasses import dataclass
 import os
 import shutil
 import tempfile
@@ -17,7 +15,7 @@
 from lifeblood.scheduler.scheduler import Scheduler
 from lifeblood_testing_common.common import create_default_scheduler
 from lifeblood.worker import Worker
-from lifeblood.invocationjob import Invocation, InvocationJob, InvocationResources, Environment
+from lifeblood.invocationjob import Invocation, InvocationResources, Environment
 from lifeblood.scheduler.pinger import Pinger
 from lifeblood.pluginloader import PluginNodeDataProvider
 from lifeblood.processingcontext import ProcessingContext