From b7079c291540c5f9e14dd3377ed092fc2d695df6 Mon Sep 17 00:00:00 2001
From: Sergey Ivanov <ivanovs-4@yandex.ru>
Date: Wed, 16 Aug 2023 16:50:16 +0400
Subject: [PATCH] Revert "PR CG2C18TK8v "account asyncs, respawn node on
 errors""

This reverts commit 8904704edcdbb7a74ec7ec9c8c5cd3632fdedf6d.
---
 docs/devlog.md                                |   1 -
 hbs2-core/hbs2-core.cabal                     |   1 -
 hbs2-core/lib/Dialog/Helpers/Streaming.hs     |   1 +
 hbs2-core/lib/HBS2/Actors.hs                  |   1 +
 hbs2-core/lib/HBS2/Actors/Peer.hs             |  13 +--
 hbs2-core/lib/HBS2/Concurrent/Supervisor.hs   |  78 -------------
 hbs2-core/lib/HBS2/Net/Messaging/TCP.hs       |  20 ++--
 hbs2-core/lib/HBS2/Net/Messaging/UDP.hs       |  15 ++-
 hbs2-core/lib/HBS2/Net/Messaging/Unix.hs      |  15 +--
 hbs2-core/lib/HBS2/Prelude.hs                 |  11 +-
 hbs2-git/git-hbs2-http/GitHttpDumbMain.hs     |   5 +-
 hbs2-git/lib/HBS2/Git/Local/CLI.hs            |   1 +
 hbs2-git/lib/HBS2Git/App.hs                   |   1 +
 hbs2-peer/app/BlockDownload.hs                |  16 ++-
 hbs2-peer/app/BlockHttpDownload.hs            |   2 +-
 hbs2-peer/app/Brains.hs                       |  10 +-
 hbs2-peer/app/DownloadQ.hs                    |   6 +-
 hbs2-peer/app/EncryptionKeys.hs               |   1 +
 hbs2-peer/app/PeerInfo.hs                     |  12 +-
 hbs2-peer/app/PeerMain.hs                     | 102 +++++++----------
 hbs2-peer/app/PeerMeta.hs                     |   1 +
 hbs2-peer/app/PeerTypes.hs                    |   1 +
 hbs2-peer/app/ProxyMessaging.hs               |  10 +-
 hbs2-peer/app/RPC.hs                          |  10 +-
 hbs2-peer/app/RefChan.hs                      |  25 ++---
 hbs2-peer/app/RefLog.hs                       | 106 ++++++++----------
 hbs2-peer/app/SignalHandlers.hs               |  25 -----
 hbs2-peer/hbs2-peer.cabal                     |   1 -
 hbs2-storage-simple/hbs2-storage-simple.cabal |   2 -
 .../lib/HBS2/Storage/Simple.hs                |  10 +-
 .../lib/HBS2/Storage/Simple/Extra.hs          |   2 +-
 hbs2-storage-simple/test/TestSimpleStorage.hs |   1 +
 hbs2-tests/test/TestTCP.hs                    |   1 +
 hbs2-tests/test/TestTCPNet.hs                 |   1 +
 hbs2/Main.hs                                  |   6 +-
 hbs2/hbs2.cabal                               |   2 -
 36 files changed, 178 insertions(+), 338 deletions(-)
 delete mode 100644 hbs2-core/lib/HBS2/Concurrent/Supervisor.hs
 delete mode 100644 hbs2-peer/app/SignalHandlers.hs

diff --git a/docs/devlog.md b/docs/devlog.md
index 8416977c..c90d3f94 100644
--- a/docs/devlog.md
+++ b/docs/devlog.md
@@ -1319,4 +1319,3 @@ PR: bus-crypt
   Шифрование протокола общения нод.
   Обмен асимметричными публичными ключами выполняется на стадии хэндшейка в ping/pong.
   Для шифрования данных создаётся симметричный ключ по diffie-hellman.
-
diff --git a/hbs2-core/hbs2-core.cabal b/hbs2-core/hbs2-core.cabal
index ca534cc9..b337620d 100644
--- a/hbs2-core/hbs2-core.cabal
+++ b/hbs2-core/hbs2-core.cabal
@@ -75,7 +75,6 @@ library
                     , HBS2.Actors.Peer.Types
                     , HBS2.Base58
                     , HBS2.Clock
-                    , HBS2.Concurrent.Supervisor
                     , HBS2.Crypto
                     , HBS2.Data.Detect
                     , HBS2.Data.Types
diff --git a/hbs2-core/lib/Dialog/Helpers/Streaming.hs b/hbs2-core/lib/Dialog/Helpers/Streaming.hs
index 7ab544a3..a38be2b6 100644
--- a/hbs2-core/lib/Dialog/Helpers/Streaming.hs
+++ b/hbs2-core/lib/Dialog/Helpers/Streaming.hs
@@ -10,6 +10,7 @@ import Streaming as S
 import Streaming.Internal
 import Streaming.Prelude (cons)
 import Streaming.Prelude qualified as S
+import UnliftIO.Async
 import UnliftIO.STM
 import Prelude hiding (cons)
 
diff --git a/hbs2-core/lib/HBS2/Actors.hs b/hbs2-core/lib/HBS2/Actors.hs
index 028a58b4..0c303c7a 100644
--- a/hbs2-core/lib/HBS2/Actors.hs
+++ b/hbs2-core/lib/HBS2/Actors.hs
@@ -14,6 +14,7 @@ import Control.Concurrent.STM.TBMQueue qualified as TBMQ
 import Control.Concurrent.STM.TBMQueue (TBMQueue)
 import Control.Concurrent.STM.TVar qualified as TVar
 import Control.Monad
+import Control.Concurrent.Async
 import Data.Function
 import Data.Functor
 import Data.Kind
diff --git a/hbs2-core/lib/HBS2/Actors/Peer.hs b/hbs2-core/lib/HBS2/Actors/Peer.hs
index 867f5acc..bf82a7e7 100644
--- a/hbs2-core/lib/HBS2/Actors/Peer.hs
+++ b/hbs2-core/lib/HBS2/Actors/Peer.hs
@@ -21,14 +21,13 @@ import HBS2.Net.PeerLocator
 import HBS2.Net.PeerLocator.Static
 import HBS2.Net.Proto
 import HBS2.Net.Proto.Sessions
-import HBS2.Prelude
 import HBS2.Prelude.Plated
 import HBS2.Storage
 import HBS2.System.Logger.Simple
-import HBS2.Concurrent.Supervisor
 
 import Control.Applicative
 import Control.Monad.Trans.Maybe
+import Control.Concurrent.Async
 import Control.Monad.Reader
 import Data.ByteString.Lazy (ByteString)
 import Data.Cache (Cache)
@@ -440,7 +439,7 @@ newPeerEnv s bus p = do
   _envEncryptionKeys <- liftIO (newTVarIO mempty)
   pure PeerEnv {..}
 
-runPeerM :: forall e m . ( MonadUnliftIO m
+runPeerM :: forall e m . ( MonadIO m
                          , HasPeer e
                          , Ord (Peer e)
                          , Pretty (Peer e)
@@ -450,12 +449,12 @@ runPeerM :: forall e m . ( MonadUnliftIO m
          -> PeerM e m ()
          -> m ()
 
-runPeerM env f  = withAsyncSupervisor "runPeerM" \sup -> do
+runPeerM env f  = do
 
   let de = view envDeferred env
-  as <- liftIO $ replicateM 8 $ asyncStick' sup "runPipeline" $ runPipeline de
+  as <- liftIO $ replicateM 8 $ async $ runPipeline de
 
-  sw <- liftIO $ asyncStick' sup "sweeps" $ forever $ withPeerM env $ do
+  sw <- liftIO $ async $ forever $ withPeerM env $ do
           pause defSweepTimeout
           se <- asks (view envSessions)
           liftIO $ Cache.purgeExpired se
@@ -463,7 +462,7 @@ runPeerM env f  = withAsyncSupervisor "runPeerM" \sup -> do
 
   void $ runReaderT (fromPeerM f) env
   void $ liftIO $ stopPipeline de
-  -- liftIO $ mapM_ cancel (as <> [sw])
+  liftIO $ mapM_ cancel (as <> [sw])
 
 withPeerM :: MonadIO m => PeerEnv e -> PeerM e m a -> m a
 withPeerM env action = runReaderT (fromPeerM action) env
diff --git a/hbs2-core/lib/HBS2/Concurrent/Supervisor.hs b/hbs2-core/lib/HBS2/Concurrent/Supervisor.hs
deleted file mode 100644
index acbfa0be..00000000
--- a/hbs2-core/lib/HBS2/Concurrent/Supervisor.hs
+++ /dev/null
@@ -1,78 +0,0 @@
-module HBS2.Concurrent.Supervisor
-( module HBS2.Concurrent.Supervisor
-, module X
-) where
-
-import Control.Arrow hiding ((<+>))
-import Control.Concurrent.Async qualified as Async
-import Control.Monad
-import Control.Monad.IO.Class
-import Control.Monad.Trans.Class
-import Control.Monad.Trans.Maybe
-import Data.Proxy
-import Data.Text (Text)
-import Prettyprinter
-import System.IO (Handle)
-import UnliftIO (MonadUnliftIO(..))
-import UnliftIO.Async
-import UnliftIO.Async as X hiding (async)
-import UnliftIO.Concurrent
-import UnliftIO.Exception
-
-import HBS2.System.Logger.Simple
-
-
-data Sup = Sup
-  { supAsync :: Async ()
-  }
-
-data SupFinished = SupFinished Text
-  deriving (Show)
-instance Exception SupFinished
-
-withAsyncSupervisor :: (MonadUnliftIO io) => Text -> (Sup -> io a) -> io a
-withAsyncSupervisor name k =
-    bracket
-        (Sup <$> async (forever (threadDelay (10^9))))
-        (flip throwTo (SupFinished name) . asyncThreadId . supAsync)
-        (\sup -> (k sup)
-              `withException` \(e :: SomeException) -> do
-                  debug $ "Finished sup " <> pretty name <> " " <> viaShow e
-        )
-
-asyncStick :: MonadUnliftIO m => Sup -> m a -> m (Async a)
-asyncStick sup ioa = do
-    a <- async ioa
-    liftIO $ Async.link2Only (const True) (supAsync sup) a
-    pure a
-
-asyncStick' :: MonadUnliftIO m => Sup -> Text -> m a -> m (Async a)
-asyncStick' sup name ioa = do
-    a <- async $
-        ioa
-            `withException` \(e :: SomeException) ->
-                debug $ "finished async" <+> pretty name <+> ":" <+> viaShow e
-    liftIO $ Async.link2Only (const True) (supAsync sup) a
-    pure a
-
-
-selectException_ :: forall e m . (Exception e, Monad m)
-  => Proxy e -> SomeException -> MaybeT m ()
-selectException_ _ = fromException >>> \case
-    Nothing -> MaybeT (pure Nothing)
-    Just (e :: e) -> pure ()
-
-selectException :: forall e m . (Exception e, Monad m)
-  => SomeException -> (e -> m ()) -> MaybeT m ()
-selectException e f = case (fromException e) of
-    Nothing -> MaybeT (pure Nothing)
-    Just e' -> lift (f e')
-
-withExceptionIO :: Exception e => IO a -> (e -> IO b) -> IO a
-withExceptionIO io what = io `catch` \e -> do
-      _ <- what e
-      throwIO e
-
-withSomeExceptionIO :: IO a -> (SomeException -> IO b) -> IO a
-withSomeExceptionIO = withExceptionIO
-
diff --git a/hbs2-core/lib/HBS2/Net/Messaging/TCP.hs b/hbs2-core/lib/HBS2/Net/Messaging/TCP.hs
index fbc3da7f..4cb28d6b 100644
--- a/hbs2-core/lib/HBS2/Net/Messaging/TCP.hs
+++ b/hbs2-core/lib/HBS2/Net/Messaging/TCP.hs
@@ -14,7 +14,6 @@ import HBS2.Net.IP.Addr
 import HBS2.Net.Messaging
 import HBS2.Net.Proto.Types
 import HBS2.Prelude.Plated
-import HBS2.Concurrent.Supervisor
 
 import HBS2.System.Logger.Simple
 
@@ -41,6 +40,7 @@ import Streaming.Prelude qualified as S
 import System.Random hiding (next)
 import Control.Monad.Trans.Resource
 
+import UnliftIO.Async
 import UnliftIO.STM
 import UnliftIO.Exception qualified as U
 
@@ -245,7 +245,7 @@ spawnConnection tp env so sa = liftIO do
     when ( used <= 2 ) do
       atomically $ modifyTVar (view tcpPeerConn env) (HashMap.insert newP connId)
 
-    when (used == 1) $ withAsyncSupervisor "in spawnConnection" \sup -> do
+    when (used == 1) do
       q <- getWriteQueue connId
       updatePeer connId newP
 
@@ -254,7 +254,7 @@ spawnConnection tp env so sa = liftIO do
                          <+> pretty newP
                          <+> parens ("used:" <+> pretty used)
 
-      rd <- asyncStick sup $ fix \next -> do
+      rd <- async $ fix \next -> do
 
             spx <- readFromSocket so 4 <&> LBS.toStrict
             ssize <- readFromSocket so 4 <&> LBS.toStrict --- УУУ, фреейминг
@@ -276,7 +276,7 @@ spawnConnection tp env so sa = liftIO do
 
             next
 
-      wr <- asyncStick sup $ fix \next -> do
+      wr <- async $ fix \next -> do
               (rcpt, bs) <- atomically $ readTQueue q
 
               pq <- makeReqId rcpt
@@ -364,14 +364,14 @@ connectPeerTCP env peer = liftIO do
 -- FIXME: link-all-asyncs
 
 runMessagingTCP :: forall m . MonadIO m => MessagingTCP -> m ()
-runMessagingTCP env = liftIO $ withAsyncSupervisor "in runMessagingTCP" \sup -> do
+runMessagingTCP env = liftIO do
 
   own <- toPeerAddr $ view tcpOwnPeer env
   let (L4Address _ (IPAddrPort (i,p))) = own
 
   let defs = view tcpDefer env
 
-  mon <- asyncStick sup $ forever do
+  mon <- async $ forever do
     pause @'Seconds 30
     now <- getTimeCoarse
 
@@ -384,7 +384,7 @@ runMessagingTCP env = liftIO $ withAsyncSupervisor "in runMessagingTCP" \sup ->
                              [] -> Nothing
                              xs -> Just xs
 
-  con <- asyncStick sup $ forever do
+  con <- async $ forever do
 
     let ev = view tcpDeferEv env
 
@@ -408,7 +408,7 @@ runMessagingTCP env = liftIO $ withAsyncSupervisor "in runMessagingTCP" \sup ->
 
         co' <- atomically $ readTVar (view tcpPeerConn env) <&> HashMap.lookup pip
 
-        maybe1 co' (void $ asyncStick sup (connectPeerTCP env pip)) $ \co -> do
+        maybe1 co' (void $ async (connectPeerTCP env pip)) $ \co -> do
           q' <- atomically $ readTVar (view tcpConnQ env) <&> HashMap.lookup co
           maybe1 q' none $ \q -> do
             atomically do
@@ -418,7 +418,7 @@ runMessagingTCP env = liftIO $ withAsyncSupervisor "in runMessagingTCP" \sup ->
 
         pure ()
 
-  stat <- asyncStick sup $ forever do
+  stat <- async $ forever do
     pause @'Seconds 120
     ps <- readTVarIO $ view tcpConnPeer env
     let peers = HashMap.toList ps
@@ -429,6 +429,8 @@ runMessagingTCP env = liftIO $ withAsyncSupervisor "in runMessagingTCP" \sup ->
                     <+> pretty c
                     <+> parens ("used:" <+> pretty used)
 
+  mapM_ link [mon,con,stat]
+
   liftIO (
     listen (Host (show i)) (show p) $ \(sock, sa) -> do
       withFdSocket sock setCloseOnExecIfNeeded
diff --git a/hbs2-core/lib/HBS2/Net/Messaging/UDP.hs b/hbs2-core/lib/HBS2/Net/Messaging/UDP.hs
index 5d8b4b12..e47789fb 100644
--- a/hbs2-core/lib/HBS2/Net/Messaging/UDP.hs
+++ b/hbs2-core/lib/HBS2/Net/Messaging/UDP.hs
@@ -7,13 +7,13 @@ import HBS2.Net.IP.Addr
 import HBS2.Net.Messaging
 import HBS2.Net.Proto
 import HBS2.Prelude.Plated
-import HBS2.Concurrent.Supervisor
 
 import HBS2.System.Logger.Simple
 
 import Data.Function
 import Control.Exception
 import Control.Monad.Trans.Maybe
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Concurrent.STM.TQueue qualified as Q0
 import Control.Monad
@@ -108,11 +108,11 @@ newMessagingUDP reuse saddr =
 
 
 udpWorker :: MessagingUDP -> TVar Socket -> IO ()
-udpWorker env tso = withAsyncSupervisor "in udpWorker" \sup -> do
+udpWorker env tso = do
 
   so <- readTVarIO tso
 
-  rcvLoop <- asyncStick sup $ forever $ do
+  rcvLoop <- async $ forever $ do
     -- so <- readTVarIO tso
     -- pause ( 10 :: Timeout 'Seconds )
     (msg, from) <- recvFrom so defMaxDatagram
@@ -120,7 +120,7 @@ udpWorker env tso = withAsyncSupervisor "in udpWorker" \sup -> do
   -- FIXME: ASAP-check-addr-type
     liftIO $ atomically $ Q0.writeTQueue (sink env) (From (PeerL4 UDP from), LBS.fromStrict msg)
 
-  sndLoop <- asyncStick sup $ forever $ do
+  sndLoop <- async $ forever $ do
     pause ( 10 :: Timeout 'Seconds )
     -- (To whom, msg) <- atomically $ Q0.readTQueue (inbox env)
     -- print "YAY!"
@@ -135,16 +135,15 @@ udpWorker env tso = withAsyncSupervisor "in udpWorker" \sup -> do
 -- FIXME: stopping
 
 runMessagingUDP :: MonadIO m => MessagingUDP -> m ()
-runMessagingUDP udpMess = liftIO $ withAsyncSupervisor "in runMessagingUDP" \sup -> do
+runMessagingUDP udpMess = liftIO $ do
   let addr = listenAddr udpMess
   so <- readTVarIO (sock udpMess)
 
   unless (mcast udpMess) $ do
     bind so addr
 
-  w <- asyncStick sup $ udpWorker udpMess (sock udpMess)
-  wait w
-  -- waitCatch w >>= either throwIO (const $ pure ())
+  w <- async $ udpWorker udpMess (sock udpMess)
+  waitCatch w >>= either throwIO (const $ pure ())
 
 instance Messaging MessagingUDP L4Proto ByteString where
 
diff --git a/hbs2-core/lib/HBS2/Net/Messaging/Unix.hs b/hbs2-core/lib/HBS2/Net/Messaging/Unix.hs
index 79fbd9fe..b1b948d8 100644
--- a/hbs2-core/lib/HBS2/Net/Messaging/Unix.hs
+++ b/hbs2-core/lib/HBS2/Net/Messaging/Unix.hs
@@ -4,7 +4,6 @@ import HBS2.Prelude.Plated
 import HBS2.Net.Proto.Types
 import HBS2.Net.Messaging
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 
 import HBS2.System.Logger.Simple
 
@@ -107,8 +106,7 @@ runMessagingUnix env = do
 
   where
 
-    runServer = forever $ handleAny cleanupAndRetry $ runResourceT $
-     withAsyncSupervisor "runServer" \sup -> do
+    runServer = forever $ handleAny cleanupAndRetry $ runResourceT do
 
       t0 <- getTimeCoarse
       atomically $ writeTVar (msgUnixLast env) t0
@@ -120,7 +118,7 @@ runMessagingUnix env = do
       liftIO $ bind sock $ SockAddrUnix (msgUnixSockPath env)
       liftIO $ listen sock 1
 
-      watchdog <- asyncStick sup $ do
+      watchdog <- async $ do
 
         let mwd = headMay [ n | MUWatchdog n <- Set.toList (msgUnixOpts env)  ]
 
@@ -141,14 +139,14 @@ runMessagingUnix env = do
             when ( acc > 0 && diff >= toNanoSeconds (TimeoutSec $ realToFrac wd) ) do
               throwIO ReadTimeoutException
 
-      run <- asyncStick sup $ forever $ runResourceT do
+      run <- async $ forever $ runResourceT do
               (so, sa) <- liftIO $ accept sock
 
               atomically $ modifyTVar (msgUnixAccepts env) succ
 
               void $ allocate (pure so) close
 
-              writer <- asyncStick sup $ forever do
+              writer <- async $ forever do
                 msg <- liftIO . atomically $ readTQueue (msgUnixInbox env)
                 let len = fromIntegral $ LBS.length msg :: Int
                 liftIO $ sendAll so $ bytestring32 (fromIntegral len)
@@ -174,8 +172,7 @@ runMessagingUnix env = do
         Right{} -> pure ()
 
 
-    runClient = liftIO $ forever $ handleAny logAndRetry $ runResourceT $
-     withAsyncSupervisor "runClient" \sup -> do
+    runClient = liftIO $ forever $ handleAny logAndRetry $ runResourceT do
 
       sock <- liftIO $ socket AF_UNIX Stream defaultProtocol
 
@@ -194,7 +191,7 @@ runMessagingUnix env = do
 
       attemptConnect
 
-      reader <- asyncStick sup $ forever do
+      reader <- async $ forever do
                   -- Read response from server
                   frameLen <- liftIO $ recv sock 4 <&> word32 <&> fromIntegral
                   frame    <- liftIO $ recv sock frameLen
diff --git a/hbs2-core/lib/HBS2/Prelude.hs b/hbs2-core/lib/HBS2/Prelude.hs
index e2024f48..1273cd07 100644
--- a/hbs2-core/lib/HBS2/Prelude.hs
+++ b/hbs2-core/lib/HBS2/Prelude.hs
@@ -24,20 +24,16 @@ import GHC.Generics as X (Generic)
 import Data.ByteString (ByteString)
 import Data.String (IsString(..))
 import Safe
-import Control.Concurrent.Async as X (ExceptionInLinkedThread)
 import Control.Monad.IO.Class (MonadIO(..))
 import Control.Monad (void,guard,when,unless)
 import Control.Monad.Trans.Class (lift)
 
-import Control.Monad.IO.Unlift as X
-import Data.Char qualified as Char
 import Data.Function
-import Data.Hashable
+import Data.Char qualified as Char
 import Data.Text qualified as Text
-import Data.Word
+import Data.Hashable
 import Prettyprinter
-import UnliftIO as X (MonadUnliftIO(..))
-import UnliftIO.Async as X
+import Data.Word
 
 none :: forall m . Monad m => m ()
 none = pure ()
@@ -66,4 +62,3 @@ class ToByteString a where
 
 class FromByteString a where
   fromByteString :: ByteString -> Maybe a
-
diff --git a/hbs2-git/git-hbs2-http/GitHttpDumbMain.hs b/hbs2-git/git-hbs2-http/GitHttpDumbMain.hs
index bb01edc1..53537a2b 100644
--- a/hbs2-git/git-hbs2-http/GitHttpDumbMain.hs
+++ b/hbs2-git/git-hbs2-http/GitHttpDumbMain.hs
@@ -2,7 +2,6 @@ module Main where
 
 import HBS2.Prelude.Plated
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 
 import HBS2Git.App
 import HBS2Git.State
@@ -36,6 +35,7 @@ import System.FilePath.Posix
 import System.IO.Temp
 import System.Timeout (timeout)
 import Text.InterpolatedString.Perl6 (qc)
+import UnliftIO.Async
 
 import Streaming.ByteString qualified as SB
 import Streaming.Zip qualified as SZip
@@ -107,7 +107,6 @@ retryFor num waity sleep action = timeout (ceiling $ waity * 1000000) $ go num
 
 dumbHttpServe :: MonadUnliftIO m => Port -> m ()
 dumbHttpServe pnum = do
- withAsyncSupervisor "dumbHttpServe" \sup -> do
 
   locks <- liftIO $ newMVar (HashMap.empty @HashRef @(MVar ()))
 
@@ -122,7 +121,7 @@ dumbHttpServe pnum = do
   --  с логом, тогда в следующий раз будет обратно
   --  распакован
 
-  updater <- asyncStick sup $ forever do
+  updater <- async $ forever do
     pause @'Seconds 300
     pure ()
 
diff --git a/hbs2-git/lib/HBS2/Git/Local/CLI.hs b/hbs2-git/lib/HBS2/Git/Local/CLI.hs
index a9ebe18f..0e4abb00 100644
--- a/hbs2-git/lib/HBS2/Git/Local/CLI.hs
+++ b/hbs2-git/lib/HBS2/Git/Local/CLI.hs
@@ -11,6 +11,7 @@ import HBS2.Git.Types
 
 import HBS2.System.Logger.Simple
 
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Monad.Writer
 import Data.HashSet (HashSet)
diff --git a/hbs2-git/lib/HBS2Git/App.hs b/hbs2-git/lib/HBS2Git/App.hs
index 656a0a1e..223ff20b 100644
--- a/hbs2-git/lib/HBS2Git/App.hs
+++ b/hbs2-git/lib/HBS2Git/App.hs
@@ -49,6 +49,7 @@ import Data.Text qualified as Text
 import Data.IORef
 import System.IO.Unsafe (unsafePerformIO)
 import Data.Cache qualified as Cache
+import Control.Concurrent.Async
 import System.Environment
 import Prettyprinter.Render.Terminal
 
diff --git a/hbs2-peer/app/BlockDownload.hs b/hbs2-peer/app/BlockDownload.hs
index 83b740f6..1f4acf23 100644
--- a/hbs2-peer/app/BlockDownload.hs
+++ b/hbs2-peer/app/BlockDownload.hs
@@ -5,7 +5,6 @@ module BlockDownload where
 
 import HBS2.Actors.Peer
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Data.Detect
 import HBS2.Data.Types.Refs
 import HBS2.Defaults
@@ -26,6 +25,7 @@ import PeerTypes
 import PeerInfo
 import Brains
 
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Concurrent.STM.TSem
 import Control.Monad.Reader
@@ -418,7 +418,6 @@ blockDownloadLoop :: forall e  m . ( m ~ PeerM e IO
                                    )
                   => DownloadEnv e -> m ()
 blockDownloadLoop env0 = do
- withAsyncSupervisor "blockDownloadLoop" \sup -> do
 
   e    <- ask
 
@@ -430,7 +429,7 @@ blockDownloadLoop env0 = do
 
   let withAllStuff = withPeerM e . withDownload env0
 
-  void $ liftIO $ asyncStick sup $ forever $ withPeerM e do
+  void $ liftIO $ async $ forever $ withPeerM e do
     pause @'Seconds 30
 
     pee <- knownPeers @e pl
@@ -441,7 +440,7 @@ blockDownloadLoop env0 = do
       liftIO $ atomically $ writeTVar (view peerBurstMax pinfo) Nothing
 
 
-  void $ liftIO $ asyncStick sup $ forever $ withPeerM e do
+  void $ liftIO $ async $ forever $ withPeerM e do
     pause @'Seconds 1.5
 
     pee <- knownPeers @e pl
@@ -452,7 +451,7 @@ blockDownloadLoop env0 = do
       updatePeerInfo False p pinfo
 
 
-  void $ liftIO $ asyncStick sup $ forever $ withAllStuff do
+  void $ liftIO $ async $ forever $ withAllStuff do
     pause @'Seconds 5 -- FIXME: put to defaults
                       --        we need to show download stats
 
@@ -508,7 +507,7 @@ blockDownloadLoop env0 = do
           liftIO $ atomically $ do
             modifyTVar busyPeers (HashSet.insert p)
 
-          void $ liftIO $ asyncStick sup $ withAllStuff do
+          void $ liftIO $ async $ withAllStuff do
 
             -- trace $ "start downloading shit" <+> pretty p <+> pretty h
 
@@ -563,7 +562,7 @@ blockDownloadLoop env0 = do
 
     proposed <- asks (view blockProposed)
 
-    void $ liftIO $ asyncStick sup $ forever do
+    void $ liftIO $ async $ forever do
       pause @'Seconds 20
       -- debug "block download loop. does not do anything"
       liftIO $ Cache.purgeExpired proposed
@@ -579,12 +578,11 @@ postponedLoop :: forall e m . ( MyPeer e
                               )
               => DownloadEnv e -> m ()
 postponedLoop env0 = do
- withAsyncSupervisor "postponedLoop" \sup -> do
   e <- ask
 
   pause @'Seconds 2.57
 
-  void $ liftIO $ asyncStick sup $ withPeerM e $ withDownload env0 do
+  void $ liftIO $ async $ withPeerM e $ withDownload env0 do
     q <- asks (view blockDelayTo)
     fix \next -> do
       w <- liftIO $ atomically $ readTQueue q
diff --git a/hbs2-peer/app/BlockHttpDownload.hs b/hbs2-peer/app/BlockHttpDownload.hs
index 5d6388cb..8a2e91a6 100644
--- a/hbs2-peer/app/BlockHttpDownload.hs
+++ b/hbs2-peer/app/BlockHttpDownload.hs
@@ -5,7 +5,6 @@ module BlockHttpDownload where
 
 import HBS2.Actors.Peer
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Data.Detect
 import HBS2.Data.Types.Refs
 import HBS2.Defaults
@@ -31,6 +30,7 @@ import PeerInfo
 import BlockDownload
 import Brains
 
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Monad.Reader
 import Control.Monad.Trans.Maybe
diff --git a/hbs2-peer/app/Brains.hs b/hbs2-peer/app/Brains.hs
index 86bcf332..c4f60307 100644
--- a/hbs2-peer/app/Brains.hs
+++ b/hbs2-peer/app/Brains.hs
@@ -3,10 +3,8 @@
 {-# Language TemplateHaskell #-}
 module Brains where
 
-import HBS2.Prelude
 import HBS2.Prelude.Plated
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Data.Types.Refs
 import HBS2.Net.Proto.RefChan(ForRefChans)
 import HBS2.Net.Proto
@@ -40,6 +38,7 @@ import System.Directory
 import System.FilePath
 import System.Random (randomRIO)
 import Text.InterpolatedString.Perl6 (qc)
+import UnliftIO (MonadUnliftIO(..),async,race)
 
 data PeerBrainsDb
 
@@ -810,14 +809,13 @@ runBasicBrains :: forall e m . ( e ~ L4Proto
                -> m ()
 
 runBasicBrains cfg brains = do
- withAsyncSupervisor "runBasicBrains" \sup -> do
 
   let pip = view brainsPipeline brains
   let expire = view brainsExpire brains
   let commit = view brainsCommit brains
 
   -- FIXME: async-error-handling
-  void $ liftIO $ asyncStick sup $ forever do
+  void $ liftIO $ async $ forever do
 
     ewaiters <- race (pause @'Seconds 5) $ do
       atomically $ do
@@ -833,7 +831,7 @@ runBasicBrains cfg brains = do
     transactional brains (sequence_ (w:ws))
     sequence_ waiters
 
-  void $ liftIO $ asyncStick sup $ forever do
+  void $ liftIO $ async $ forever do
     pause @'Seconds 60
     updateOP brains (cleanupHashes brains)
 
@@ -845,7 +843,7 @@ runBasicBrains cfg brains = do
        | ListVal @C (Key "poll" [SymbolVal tp, LitIntVal n, LitStrVal ref]) <- syn
        ] )
 
-  void $ asyncStick sup $ do
+  void $ async $ do
     -- pause @'Seconds 5
     forM_ polls $ \(t,mi,x) -> do
       trace $ "BRAINS: poll" <+> pretty t <+> pretty (AsBase58 x) <+> pretty mi
diff --git a/hbs2-peer/app/DownloadQ.hs b/hbs2-peer/app/DownloadQ.hs
index 4b19218e..e7e73dde 100644
--- a/hbs2-peer/app/DownloadQ.hs
+++ b/hbs2-peer/app/DownloadQ.hs
@@ -3,7 +3,6 @@ module DownloadQ where
 
 import HBS2.Prelude
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Hash
 import HBS2.Events
 import HBS2.Data.Types.Refs
@@ -28,6 +27,7 @@ import Data.Functor
 import Data.Function
 import Control.Exception
 import Control.Monad
+import Control.Concurrent.Async
 import System.IO
 
 
@@ -46,11 +46,9 @@ downloadQueue :: forall e m . ( MyPeer e
                               , HasPeerLocator e (BlockDownloadM e m)
                               , HasPeerLocator e m
                               , EventListener e (DownloadReq e) m
-                              , MonadUnliftIO m
                               ) => PeerConfig -> DownloadEnv e -> m ()
 
 downloadQueue conf denv = do
- withAsyncSupervisor "in downloadQueue" \sup -> do
 
   sto <- getStorage
   hq <- liftIO newTQueueIO
@@ -64,7 +62,7 @@ downloadQueue conf denv = do
     liftIO $ atomically $ writeTQueue hq h
 
   maybe1 qfile' noLogFile $ \fn -> do
-    void $ liftIO $ asyncStick sup $ forever $ do
+    void $ liftIO $ async $ forever $ do
       pause @'Seconds 10
       fromq <- liftIO $ atomically $ flushTQueue hq
       unless (null fromq) do
diff --git a/hbs2-peer/app/EncryptionKeys.hs b/hbs2-peer/app/EncryptionKeys.hs
index 622fdf37..dd524d5d 100644
--- a/hbs2-peer/app/EncryptionKeys.hs
+++ b/hbs2-peer/app/EncryptionKeys.hs
@@ -23,6 +23,7 @@ import PeerConfig
 import PeerTypes
 
 import Codec.Serialise
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Monad
 import Control.Monad.Reader
diff --git a/hbs2-peer/app/PeerInfo.hs b/hbs2-peer/app/PeerInfo.hs
index 5ce81777..58598c3a 100644
--- a/hbs2-peer/app/PeerInfo.hs
+++ b/hbs2-peer/app/PeerInfo.hs
@@ -4,7 +4,6 @@ module PeerInfo where
 
 import HBS2.Actors.Peer
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Data.Types
 import HBS2.Events
 import HBS2.Net.Auth.Credentials
@@ -23,6 +22,7 @@ import PeerConfig
 import PeerTypes
 import Brains
 
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Monad
 import Control.Monad.Reader
@@ -80,18 +80,17 @@ pexLoop :: forall e brains m . ( HasPeerLocator e m
                                , HasNonces (PeerExchange e) m
                                , Request e (PeerExchange e) m
                                , Sessions e (PeerExchange e) m
-                               , MonadUnliftIO m
+                               , MonadIO m
                                , e ~ L4Proto
                                ) => brains -> Maybe MessagingTCP -> m ()
 
 pexLoop brains tcpEnv = do
- withAsyncSupervisor "pexLoop" \sup -> do
 
   pause @'Seconds 5
 
   pl <- getPeerLocator @e
 
-  tcpPexInfo <- liftIO $ asyncStick sup $ forever do
+  tcpPexInfo <- liftIO $ async $ forever do
     -- FIXME: fix-hardcode
     pause @'Seconds 20
 
@@ -151,7 +150,6 @@ peerPingLoop :: forall e m . ( HasPeerLocator e m
                              )
              => PeerConfig -> PeerEnv e -> m ()
 peerPingLoop cfg penv = do
- withAsyncSupervisor "peerPingLoop" \sup -> do
 
   e <- ask
 
@@ -173,7 +171,7 @@ peerPingLoop cfg penv = do
 
 
   -- TODO: peer info loop
-  infoLoop <- liftIO $ asyncStick sup $ forever $ withPeerM e $ do
+  infoLoop <- liftIO $ async $ forever $ withPeerM e $ do
     pause @'Seconds 10
     pee <- knownPeers @e pl
 
@@ -210,7 +208,7 @@ peerPingLoop cfg penv = do
       pure ()
 
 
-  watch <- liftIO $ asyncStick sup $ forever $ withPeerM e $ do
+  watch <- liftIO $ async $ forever $ withPeerM e $ do
              pause @'Seconds 120
              pips <- getKnownPeers @e
              now <- getTimeCoarse
diff --git a/hbs2-peer/app/PeerMain.hs b/hbs2-peer/app/PeerMain.hs
index aa2bdbbd..df01d834 100644
--- a/hbs2-peer/app/PeerMain.hs
+++ b/hbs2-peer/app/PeerMain.hs
@@ -10,7 +10,6 @@ import HBS2.Prelude.Plated
 import HBS2.Actors.Peer
 import HBS2.Base58
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Defaults
 import HBS2.Events
 import HBS2.Hash
@@ -61,9 +60,9 @@ import PeerMain.PeerDialog
 import PeerMeta
 import CLI.RefChan
 import RefChan
-import SignalHandlers
 
 import Codec.Serialise as Serialise
+-- import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Exception as Exception
 import Control.Monad.Reader
@@ -101,6 +100,7 @@ import Text.InterpolatedString.Perl6 (qc)
 
 import UnliftIO.Exception qualified as U
 -- import UnliftIO.STM
+import UnliftIO.Async as U
 
 import Control.Monad.Trans.Resource
 import Streaming.Prelude qualified as S
@@ -430,8 +430,9 @@ instance ( Monad m
   response = lift . response
 
 
-respawn :: IO ()
-respawn = do
+respawn :: PeerOpts -> IO ()
+respawn opts = case view peerRespawn opts of
+  Just True -> do
     let secs = 5
     notice $ "RESPAWNING in" <+> viaShow secs <> "s"
     pause @'Seconds secs
@@ -440,34 +441,18 @@ respawn = do
     print (self, args)
     executeFile self False args Nothing
 
+  _ -> exitFailure
+
 runPeer :: forall e s . ( e ~ L4Proto
                         , FromStringMaybe (PeerAddr e)
                         , s ~ Encryption e
                         , HasStorage (PeerM e IO)
                         ) => PeerOpts -> IO ()
 
-runPeer opts = do
-    installSignalHandlers
-
-    let h = case view peerRespawn opts of
-              Just True ->
-                  Exception.handle (\e -> do
-                          myException e
-                          performGC
-                          respawn
-                          )
-              _ -> id
-
-    h (runPeer' opts)
-
-
-runPeer' :: forall e s . ( e ~ L4Proto
-                        , FromStringMaybe (PeerAddr e)
-                        , s ~ Encryption e
-                        , HasStorage (PeerM e IO)
-                        ) => PeerOpts -> IO ()
-
-runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
+runPeer opts = U.handle (\e -> myException e
+                        >> performGC
+                        >> respawn opts
+                        ) $ runResourceT do
 
   metrics <- liftIO newStore
 
@@ -546,7 +531,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
   let blk = liftIO . hasBlock s
 
 
-  w <- replicateM defStorageThreads $ asyncStick sup $ liftIO $ simpleStorageWorker s
+  w <- replicateM defStorageThreads $ async $ liftIO $ simpleStorageWorker s
 
   localMulticast <- liftIO $ (headMay <$> parseAddrUDP (fromString defLocalMulticast)
                                       <&> fmap (fromSockAddr @'UDP . addrAddress) )
@@ -558,21 +543,21 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
   mess <- newMessagingUDP False listenSa
             `orDie` "unable listen on the given addr"
 
-  udp <- asyncStick sup $ runMessagingUDP mess
+  udp <- async $ runMessagingUDP mess
 
   udp1 <- newMessagingUDP False rpcSa
             `orDie` "Can't start RPC listener"
 
-  mrpc <- asyncStick sup $ runMessagingUDP udp1
+  mrpc <- async $ runMessagingUDP udp1
 
   mcast <- newMessagingUDPMulticast defLocalMulticast
             `orDie` "Can't start RPC listener"
 
-  messMcast <- asyncStick sup $ runMessagingUDP mcast
+  messMcast <- async $ runMessagingUDP mcast
 
   brains <- newBasicBrains @e conf
 
-  brainsThread <- asyncStick sup $ runBasicBrains conf brains
+  brainsThread <- async $ runBasicBrains conf brains
 
   denv <- newDownloadEnv brains
 
@@ -584,7 +569,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
   tcp <- maybe1 addr' (pure Nothing) $ \addr -> do
            tcpEnv <- newMessagingTCP addr <&> set tcpOnClientStarted (onClientTCPConnected brains)
            -- FIXME: handle-tcp-thread-somehow
-           void $ asyncStick sup $ runMessagingTCP tcpEnv
+           void $ async $ runMessagingTCP tcpEnv
            pure $ Just tcpEnv
 
   (proxy, penv) <- mdo
@@ -620,13 +605,13 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
       penv <- newPeerEnv (AnyStorage s) (Fabriq proxy) (getOwnPeer mess)
       pure (proxy, penv)
 
-  proxyThread <- asyncStick sup $ runProxyMessaging proxy
+  proxyThread <- async $ runProxyMessaging proxy
 
   let peerMeta = mkPeerMeta conf penv
 
   nbcache <- liftIO $ Cache.newCache (Just $ toTimeSpec ( 600 :: Timeout 'Seconds))
 
-  void $ asyncStick sup $ forever do
+  void $ async $ forever do
     pause @'Seconds 600
     liftIO $ Cache.purgeExpired nbcache
 
@@ -660,7 +645,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
               -- debug  $ "onNoBlock" <+> pretty p <+> pretty h
               withPeerM penv $ withDownload denv (addDownload mzero h)
 
-  loop <- liftIO $ asyncStick sup do
+  loop <- liftIO $ async do
 
             runPeerM penv $ do
               adapter <- mkAdapter
@@ -850,19 +835,16 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
                                     doAddPeer p
 
 
-              void $ asyncStick sup $ withPeerM env do
+              void $ liftIO $ async $ withPeerM env do
                 pause @'Seconds 1
                 debug "sending first peer announce"
                 request localMulticast (PeerAnnounce @e pnonce)
 
-              let peerThread t mx = W.tell . L.singleton =<< (liftIO . asyncStick sup) do
+              let peerThread t mx = W.tell . L.singleton =<< (liftIO . async) do
                     withPeerM env mx
-                      `U.withException` \e -> runMaybeT $
-                                  selectException @AsyncCancelled e (\e' -> pure ())
-                              <|> selectException @ExceptionInLinkedThread e (\e' -> pure ())
-                              <|> lift do
-                                      err ("peerThread" <+> viaShow t <+> "Failed with" <+> viaShow e)
-
+                      `U.withException` \e -> case (fromException e) of
+                        Just (e' :: AsyncCancelled) -> pure ()
+                        Nothing -> err ("peerThread" <+> viaShow t <+> "Failed with" <+> viaShow e)
                     debug $ "peerThread Finished:" <+> t
               workers <- W.execWriterT do
 
@@ -1060,7 +1042,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
 
   let peersAction _ = do
         who <- thatPeer (Proxy @(RPC e))
-        void $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           forKnownPeers @e $ \p pde -> do
               pa <- toPeerAddr p
               let k = view peerSignKey pde
@@ -1069,7 +1051,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
   let pexInfoAction :: RPC L4Proto -> ResponseM L4Proto (RpcM (ResourceT IO)) ()
       pexInfoAction _ = do
         who <- thatPeer (Proxy @(RPC e))
-        void $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
             -- FIXME: filter-pexinfo-entries
             ps <- getAllPex2Peers
             request who (RPCPexInfoAnswer @e ps)
@@ -1097,20 +1079,20 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
         --
   let reflogFetchAction puk = do
         trace "reflogFetchAction"
-        void $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           broadCastMessage (RefLogRequest @e puk)
 
   let reflogGetAction puk = do
         trace $ "reflogGetAction" <+> pretty (AsBase58 puk)
         who <- thatPeer (Proxy @(RPC e))
-        void $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           sto <- getStorage
           h <- liftIO $ getRef sto (RefLogKey @(Encryption e) puk)
           request who (RPCRefLogGetAnswer @e  h)
 
   let refChanHeadSendAction h = do
         trace $ "refChanHeadSendAction" <+> pretty h
-        void $ liftIO $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           me <- ownPeer @e
           sto <- getStorage
 
@@ -1132,19 +1114,19 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
   let refChanHeadGetAction puk = do
         trace $ "refChanHeadGetAction" <+> pretty (AsBase58 puk)
         who <- thatPeer (Proxy @(RPC e))
-        void $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           sto <- getStorage
           h <- liftIO $ getRef sto (RefChanHeadKey @(Encryption e) puk)
           request who (RPCRefChanHeadGetAnsw @e  h)
 
   let refChanHeadFetchAction puk = do
         trace "reChanFetchAction"
-        void $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           broadCastMessage (RefChanGetHead @e puk)
 
   let refChanProposeAction (puk, lbs) = do
         trace "reChanProposeAction"
-        void $ liftIO $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           me <- ownPeer @e
           runMaybeT do
             box <- MaybeT $ pure $ deserialiseOrFail lbs & either (const Nothing) Just
@@ -1160,7 +1142,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
 
   let refChanNotifyAction (puk, lbs) = do
         trace "refChanNotifyAction"
-        void $ liftIO $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           me <- ownPeer @e
           runMaybeT do
             box <- MaybeT $ pure $ deserialiseOrFail lbs & either (const Nothing) Just
@@ -1169,7 +1151,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
   let refChanGetAction puk = do
         trace $ "refChanGetAction" <+> pretty (AsBase58 puk)
         who <- thatPeer (Proxy @(RPC e))
-        void $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           sto <- getStorage
           h <- liftIO $ getRef sto (RefChanLogKey @(Encryption e) puk)
           trace $ "refChanGetAction ANSWER IS" <+> pretty h
@@ -1177,7 +1159,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
 
   let refChanFetchAction puk = do
         trace $ "refChanFetchAction" <+> pretty (AsBase58 puk)
-        void $ liftIO $ asyncStick sup $ withPeerM penv $ do
+        void $ liftIO $ async $ withPeerM penv $ do
           gossip (RefChanRequest @e puk)
 
   let arpc = RpcAdapter
@@ -1216,7 +1198,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
       dialReqProtoAdapterRouter <- pure dialogRoutes
       pure DialReqProtoAdapter {..}
 
-  rpc <- asyncStick sup $ runRPC udp1 do
+  rpc <- async $ runRPC udp1 do
                    runProto @e
                      [ makeResponse (rpcHandler arpc)
                      , makeResponse (dialReqProto dialReqProtoAdapter)
@@ -1224,7 +1206,7 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
 
   menv <- newPeerEnv (AnyStorage s) (Fabriq mcast) (getOwnPeer mcast)
 
-  ann <- liftIO $ asyncStick sup $ runPeerM menv $ do
+  ann <- liftIO $ async $ runPeerM menv $ do
 
                    self <- ownPeer @e
 
@@ -1242,10 +1224,9 @@ runPeer' opts = runResourceT $ withAsyncSupervisor "in runPeer" \sup -> do
                      , makeResponse peerAnnounceProto
                      ]
 
-  lift $
-      (void $ waitAnyCancel $ w <> [udp,loop,rpc,mrpc,ann,messMcast,brainsThread])
-      `finally`
-      (liftIO $ simpleStorageStop s)
+  void $ waitAnyCancel $ w <> [udp,loop,rpc,mrpc,ann,messMcast,brainsThread]
+
+  liftIO $ simpleStorageStop s
 
 
 
@@ -1259,3 +1240,4 @@ emitToPeer :: ( MonadIO m
 
 emitToPeer env k e = liftIO $ withPeerM env (emit k e)
 
+
diff --git a/hbs2-peer/app/PeerMeta.hs b/hbs2-peer/app/PeerMeta.hs
index 532b2a26..b596afeb 100644
--- a/hbs2-peer/app/PeerMeta.hs
+++ b/hbs2-peer/app/PeerMeta.hs
@@ -17,6 +17,7 @@ import HBS2.System.Logger.Simple
 
 import PeerTypes
 
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Monad.Reader
 import Control.Monad.Trans.Maybe
diff --git a/hbs2-peer/app/PeerTypes.hs b/hbs2-peer/app/PeerTypes.hs
index 85b5cab5..e0251e31 100644
--- a/hbs2-peer/app/PeerTypes.hs
+++ b/hbs2-peer/app/PeerTypes.hs
@@ -32,6 +32,7 @@ import PeerConfig
 
 import Prelude hiding (log)
 import Data.Foldable (for_)
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Monad.Reader
 import Control.Monad.Writer qualified as W
diff --git a/hbs2-peer/app/ProxyMessaging.hs b/hbs2-peer/app/ProxyMessaging.hs
index f1f4afb2..e2cf8d52 100644
--- a/hbs2-peer/app/ProxyMessaging.hs
+++ b/hbs2-peer/app/ProxyMessaging.hs
@@ -9,7 +9,6 @@ module ProxyMessaging
 import HBS2.Prelude.Plated
 import HBS2.Net.Messaging
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Crypto
 import HBS2.Net.Auth.Credentials
 import HBS2.Net.Proto.Definition ()
@@ -28,6 +27,7 @@ import Crypto.Saltine.Core.Box qualified as Encrypt
 import Codec.Serialise
 import Control.Applicative
 import Control.Arrow hiding ((<+>))
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Concurrent.STM.TQueue
 import Control.Monad.Trans.Maybe
@@ -85,25 +85,23 @@ runProxyMessaging :: forall m . MonadIO  m
                   -> m ()
 
 runProxyMessaging env = liftIO do
- withAsyncSupervisor "runProxyMessaging" \sup -> do
 
   let udp = view proxyUDP env
   let answ = view proxyAnswers env
   let udpPeer = getOwnPeer udp
 
-  u <- asyncStick sup $ forever do
+  u <- async $ forever do
           msgs <- receive  udp (To udpPeer)
           atomically $ do
             forM_ msgs $ writeTQueue answ
 
-  t <- asyncStick sup $ maybe1 (view proxyTCP env) none $ \tcp -> do
+  t <- async $ maybe1 (view proxyTCP env) none $ \tcp -> do
           forever do
             msgs <- receive  tcp (To $ view tcpOwnPeer tcp)
             atomically $ do
               forM_ msgs $ writeTQueue answ
 
-  -- liftIO $ void $ waitAnyCatch [u,t]   ???
-  liftIO $ void $ waitAny [u,t]
+  liftIO $ mapM_ waitCatch [u,t]
 
 
 instance Messaging ProxyMessaging L4Proto LBS.ByteString where
diff --git a/hbs2-peer/app/RPC.hs b/hbs2-peer/app/RPC.hs
index c2c961b8..12f806f9 100644
--- a/hbs2-peer/app/RPC.hs
+++ b/hbs2-peer/app/RPC.hs
@@ -6,7 +6,6 @@ module RPC where
 import HBS2.Actors.Peer
 import HBS2.Base58
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Hash
 import HBS2.Net.Auth.Credentials
 import HBS2.Net.IP.Addr
@@ -36,6 +35,7 @@ import Lens.Micro.Platform
 import Network.Socket
 import System.Exit
 import System.IO
+import UnliftIO.Async as U
 import Control.Concurrent.MVar
 
 data PeerRpcKey
@@ -268,7 +268,7 @@ runRpcCommand opt = \case
 
 
 withRPC :: FromStringMaybe (PeerAddr L4Proto) => RPCOpt -> RPC L4Proto -> IO ()
-withRPC o cmd = rpcClientMain o $ runResourceT $ withAsyncSupervisor "withRPC" \sup -> do
+withRPC o cmd = rpcClientMain o $ runResourceT do
 
   liftIO $ hSetBuffering stdout LineBuffering
 
@@ -285,7 +285,7 @@ withRPC o cmd = rpcClientMain o $ runResourceT $ withAsyncSupervisor "withRPC" \
 
   udp1 <- newMessagingUDP False Nothing `orDie` "Can't start RPC"
 
-  mrpc <- asyncStick sup $ runMessagingUDP udp1
+  mrpc <- async $ runMessagingUDP udp1
 
   pingQ <- liftIO newTQueueIO
 
@@ -332,9 +332,9 @@ withRPC o cmd = rpcClientMain o $ runResourceT $ withAsyncSupervisor "withRPC" \
           , rpcOnRefChanNotify = dontHandle
           }
 
-  prpc <- asyncStick sup $ runRPC udp1 do
+  prpc <- async $ runRPC udp1 do
                     env <- ask
-                    proto <- liftIO $ asyncStick sup $ continueWithRPC env $ do
+                    proto <- liftIO $ async $ continueWithRPC env $ do
                       runProto @L4Proto
                         [ makeResponse (rpcHandler adapter)
                         ]
diff --git a/hbs2-peer/app/RefChan.hs b/hbs2-peer/app/RefChan.hs
index a13442ce..f996fb49 100644
--- a/hbs2-peer/app/RefChan.hs
+++ b/hbs2-peer/app/RefChan.hs
@@ -17,7 +17,6 @@ import HBS2.Prelude.Plated
 import HBS2.Actors.Peer
 import HBS2.Base58
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Data.Detect
 import HBS2.Data.Types.Refs
 import HBS2.Events
@@ -253,7 +252,6 @@ refChanWorkerInitValidators :: forall e  m . ( MonadIO m
 
 
 refChanWorkerInitValidators env = do
- withAsyncSupervisor "refChanWorkerInitValidators" \sup -> do
   debug "refChanWorkerInitValidators"
 
   let (PeerConfig syn) = view refChanWorkerConf env
@@ -273,7 +271,7 @@ refChanWorkerInitValidators env = do
 
     unless here do
       q <- newTQueueIO
-      val <- asyncStick sup $ validatorThread sup rc sa q
+      val <- async $ validatorThread rc sa q
       let rcv = RefChanValidator q val
       atomically $ modifyTVar (_refChanWorkerValidators env) (HashMap.insert rc rcv)
 
@@ -283,22 +281,22 @@ refChanWorkerInitValidators env = do
     mkV rc x = (,Text.unpack x) <$> fromStringMay @(RefChanId e) (Text.unpack rc)
 
     -- FIXME: make-thread-respawning
-    validatorThread sup chan sa q = liftIO do
+    validatorThread chan sa q = liftIO do
       client <- newMessagingUnix False 1.0 sa
-      msg <- asyncStick sup $ runMessagingUnix client
+      msg <- async $ runMessagingUnix client
 
       -- FIXME: hardcoded-timeout
       waiters <- Cache.newCache (Just (toTimeSpec (10 :: Timeout 'Seconds)))
 
       runValidateProtoM client do
 
-        poke <- asyncStick sup $ forever do
+        poke <- async $ forever do
                   pause @'Seconds 10
                   mv <- newEmptyMVar
                   nonce <- newNonce @(RefChanValidate UNIX)
                   atomically $ writeTQueue q (RefChanValidate @UNIX nonce chan Poke, mv)
 
-        z <- asyncStick sup $ runProto
+        z <- async $ runProto
           [ makeResponse (refChanValidateProto waiters)
           ]
 
@@ -349,29 +347,28 @@ refChanWorker :: forall e s m . ( MonadIO m
              -> m ()
 
 refChanWorker env brains = do
- withAsyncSupervisor "refChanWorker" \sup -> do
 
   penv <- ask
 
   mergeQ <- newTQueueIO
 
   -- FIXME: resume-on-exception
-  hw <- asyncStick sup (refChanHeadMon penv)
+  hw <- async (refChanHeadMon penv)
 
   -- FIXME: insist-more-during-download
   --  что-то частая ситуация, когда блоки
   --  с трудом докачиваются. надо бы
   --  разобраться. возможно переделать
   --  механизм скачивания блоков
-  downloads <- asyncStick sup monitorHeadDownloads
+  downloads <- async monitorHeadDownloads
 
-  polls <- asyncStick sup refChanPoll
+  polls <- async refChanPoll
 
-  wtrans <- asyncStick sup refChanWriter
+  wtrans <- async refChanWriter
 
-  cleanup1 <- asyncStick sup cleanupRounds
+  cleanup1 <- async cleanupRounds
 
-  merge <- asyncStick sup (logMergeProcess env mergeQ)
+  merge <- async (logMergeProcess env mergeQ)
 
   sto <- getStorage
 
diff --git a/hbs2-peer/app/RefLog.hs b/hbs2-peer/app/RefLog.hs
index affbc2ec..97624708 100644
--- a/hbs2-peer/app/RefLog.hs
+++ b/hbs2-peer/app/RefLog.hs
@@ -4,7 +4,6 @@ module RefLog where
 
 import HBS2.Prelude.Plated
 import HBS2.Clock
-import HBS2.Concurrent.Supervisor
 import HBS2.Actors.Peer
 import HBS2.Events
 import HBS2.Data.Types.Refs
@@ -31,7 +30,6 @@ import Data.Maybe
 import Data.Foldable(for_)
 import Data.Text qualified as Text
 import Control.Concurrent.STM
-import Control.Exception qualified as Exception
 import Control.Monad
 import Data.ByteString.Lazy qualified as LBS
 import Data.ByteString qualified as BS
@@ -39,6 +37,7 @@ import Data.HashMap.Strict qualified as HashMap
 import Codec.Serialise
 import Data.HashSet qualified as HashSet
 import Data.HashSet (HashSet)
+import Control.Concurrent.Async
 import Control.Monad.Trans.Maybe
 import Lens.Micro.Platform
 
@@ -102,7 +101,7 @@ data RefLogWorkerAdapter e =
  , reflogFetch    :: PubKey 'Sign (Encryption e) -> IO ()
  }
 
-reflogWorker :: forall e s m . ( MonadUnliftIO m, MyPeer e
+reflogWorker :: forall e s m . ( MonadIO m, MyPeer e
                                , EventListener e (RefLogUpdateEv e) m
                                , EventListener e (RefLogRequestAnswer e) m
                              -- , Request e (RefLogRequest e) (Peerm
@@ -120,7 +119,6 @@ reflogWorker :: forall e s m . ( MonadUnliftIO m, MyPeer e
              -> m ()
 
 reflogWorker conf adapter = do
- withAsyncSupervisor "reflog worker" \supw -> do
 
   sto <- getStorage
 
@@ -167,9 +165,9 @@ reflogWorker conf adapter = do
     here <- liftIO $ readTVarIO reflogMon <&> HashSet.member h
     unless here do
       liftIO $ atomically $ modifyTVar' reflogMon (HashSet.insert h)
-      void $ liftIO $ asyncStick supw $ do
-        timeout <-  asyncStick supw (reflogTimeout reflog h)
-        work <- asyncStick supw $ do
+      void $ liftIO $ async $ do
+        timeout <-  async (reflogTimeout reflog h)
+        work <- async $ do
           trace $ "reflog worker. GOT REFLOG ANSWER" <+> pretty (AsBase58 reflog) <+> pretty h
           reflogDownload adapter h
           fix \next -> do
@@ -218,64 +216,18 @@ reflogWorker conf adapter = do
   let pollIntervals = HashMap.fromListWith (<>) [ (i, [r]) | (r,i) <- HashMap.toList polls ]
                             & HashMap.toList
 
-  withAsyncSupervisor "reflog updater" \sup -> do
-      pollers <-
-          forM pollIntervals \(i,refs) -> liftIO do
-              asyncStick' sup "poller" $ do
-                  pause @'Seconds 10
-                  forever $ do
-                      for_ refs $ \r -> do
-                          trace $ "POLL REFERENCE" <+> pretty (AsBase58 r) <+> pretty i <> "m"
-                          reflogFetch adapter r
-                      pause (fromIntegral i :: Timeout 'Minutes)
 
-      updaters <- replicateM 4 $ liftIO $ asyncStick' sup "updater" $
-          (`Exception.finally` (err "reflog updater ended. HOW?!")) $
-          (`withSomeExceptionIO` (\e -> err $ "REFLOG UPDATER:" <> viaShow e)) $
-          forever $ do
-              pause @'Seconds 1
-              reflogUpdater pQ sto
-                  `withSomeExceptionIO` (\e -> err $ "reflog updater:" <> viaShow e)
-                  -- `Exception.finally` (debug "reflog updater fin")
-              -- debug "reflog updater normally performed"
+  pollers' <- liftIO $ async $ do
+                pause @'Seconds 10
+                forM pollIntervals  $ \(i,refs) -> liftIO do
+                  async $ forever $ do
+                    for_ refs $ \r -> do
+                      trace $ "POLL REFERENCE" <+> pretty (AsBase58 r) <+> pretty i <> "m"
+                      reflogFetch adapter r
 
-      void $ liftIO $ waitAnyCatchCancel $ updaters <> pollers
+                    pause (fromIntegral i :: Timeout 'Minutes)
 
-  where
-
-    missedEntries sto h = do
-      missed <- liftIO $ newTVarIO mempty
-      walkMerkle h (getBlock sto) $ \hr -> do
-        case hr of
-          Left ha -> do
-            atomically $ modifyTVar missed (ha:)
-          Right (hs :: [HashRef]) -> do
-            w <- mapM ( hasBlock sto . fromHashRef ) hs <&> fmap isJust
-            let mi = [ hx | (False,hx) <- zip w hs ]
-            for_ mi $ \hx -> liftIO $ atomically $ modifyTVar missed (fromHashRef hx:)
-
-      liftIO $ readTVarIO missed
-
-readHashesFromBlock :: AnyStorage -> Maybe (Hash HbSync) -> IO [HashRef]
-readHashesFromBlock _ Nothing = pure mempty
-readHashesFromBlock sto (Just h) = do
-      treeQ <- liftIO newTQueueIO
-      walkMerkle h (getBlock sto) $ \hr -> do
-        case hr of
-          Left{} -> pure ()
-          Right (hrr :: [HashRef]) -> atomically $ writeTQueue treeQ hrr
-      re <- liftIO $ atomically $ flushTQueue treeQ
-      pure $ mconcat re
-
-reflogUpdater :: forall e s .
-    ( Serialise (RefLogUpdate e)
-    , s ~ Encryption e
-    , IsRefPubKey s
-    , Pretty (AsBase58 (PubKey 'Sign s))
-    )
-    => TQueue (PubKey 'Sign s, [RefLogUpdate e]) -> AnyStorage -> IO ()
-
-reflogUpdater pQ sto = do
+  w1 <- liftIO $ async $ forever $ replicateConcurrently_ 4 do
 
           -- TODO: reflog-process-period-to-config
           -- pause @'Seconds 10
@@ -317,3 +269,33 @@ reflogUpdater pQ sto = do
               trace $ "new reflog value" <+> pretty (AsBase58 r) <+> pretty newRoot
 
           -- trace  "I'm a reflog update worker"
+
+  pollers <- liftIO $ wait pollers'
+  void $ liftIO $ waitAnyCatchCancel $ w1 : pollers
+
+  where
+
+    readHashesFromBlock _ Nothing = pure mempty
+    readHashesFromBlock sto (Just h) = do
+      treeQ <- liftIO newTQueueIO
+      walkMerkle h (getBlock sto) $ \hr -> do
+        case hr of
+          Left{} -> pure ()
+          Right (hrr :: [HashRef]) -> atomically $ writeTQueue treeQ hrr
+      re <- liftIO $ atomically $ flushTQueue treeQ
+      pure $ mconcat re
+
+    missedEntries sto h = do
+      missed <- liftIO $ newTVarIO mempty
+      walkMerkle h (getBlock sto) $ \hr -> do
+        case hr of
+          Left ha -> do
+            atomically $ modifyTVar missed (ha:)
+          Right (hs :: [HashRef]) -> do
+            w <- mapM ( hasBlock sto . fromHashRef ) hs <&> fmap isJust
+            let mi = [ hx | (False,hx) <- zip w hs ]
+            for_ mi $ \hx -> liftIO $ atomically $ modifyTVar missed (fromHashRef hx:)
+
+      liftIO $ readTVarIO missed
+
+
diff --git a/hbs2-peer/app/SignalHandlers.hs b/hbs2-peer/app/SignalHandlers.hs
deleted file mode 100644
index 449c2f24..00000000
--- a/hbs2-peer/app/SignalHandlers.hs
+++ /dev/null
@@ -1,25 +0,0 @@
-module SignalHandlers where
-
-import Control.Exception (Exception, toException)
-import Control.Monad
-import System.Mem.Weak (deRefWeak)
-import System.Posix.Signals
-import UnliftIO.Concurrent
-
-newtype SignalException = SignalException Signal
-  deriving (Show)
-instance Exception SignalException
-
-installSignalHandlers :: IO ()
-installSignalHandlers = do
-  main_thread_id <- myThreadId
-  weak_tid <- mkWeakThreadId main_thread_id
-  forM_ [ sigHUP, sigTERM, sigUSR1, sigUSR2, sigXCPU, sigXFSZ ] $ \sig ->
-    installHandler sig (Catch $ send_exception weak_tid sig) Nothing
-  where
-    send_exception weak_tid sig = do
-      m <- deRefWeak weak_tid
-      case m of
-        Nothing  -> return ()
-        Just tid -> throwTo tid (toException $ SignalException sig)
-
diff --git a/hbs2-peer/hbs2-peer.cabal b/hbs2-peer/hbs2-peer.cabal
index d1ab47d0..0f951bdf 100644
--- a/hbs2-peer/hbs2-peer.cabal
+++ b/hbs2-peer/hbs2-peer.cabal
@@ -148,7 +148,6 @@ executable hbs2-peer
                     , Brains
                     , ProxyMessaging
                     , CLI.RefChan
-                    , SignalHandlers
 
     -- other-extensions:
     build-depends:    base
diff --git a/hbs2-storage-simple/hbs2-storage-simple.cabal b/hbs2-storage-simple/hbs2-storage-simple.cabal
index 768fbb26..0931ed13 100644
--- a/hbs2-storage-simple/hbs2-storage-simple.cabal
+++ b/hbs2-storage-simple/hbs2-storage-simple.cabal
@@ -80,8 +80,6 @@ library
                     , unordered-containers
                     , temporary
                     , filepattern
-                    , unliftio
-                    , unliftio-core
 
 
     hs-source-dirs:   lib
diff --git a/hbs2-storage-simple/lib/HBS2/Storage/Simple.hs b/hbs2-storage-simple/lib/HBS2/Storage/Simple.hs
index 1bf491bd..d701456c 100644
--- a/hbs2-storage-simple/lib/HBS2/Storage/Simple.hs
+++ b/hbs2-storage-simple/lib/HBS2/Storage/Simple.hs
@@ -9,14 +9,13 @@ module HBS2.Storage.Simple
 
 import HBS2.Clock
 import HBS2.Hash
-import HBS2.Prelude
 import HBS2.Prelude.Plated
 import HBS2.Storage
 import HBS2.Base58
-import HBS2.Concurrent.Supervisor
 
 import HBS2.System.Logger.Simple
 
+import Control.Concurrent.Async
 import Control.Exception
 import Control.Monad
 import Control.Monad.Except
@@ -165,15 +164,14 @@ simpleStorageStop ss = do
 
 simpleStorageWorker :: IsSimpleStorageKey h => SimpleStorage h -> IO ()
 simpleStorageWorker ss = do
- withAsyncSupervisor "in simpleStorageWorker" \sup -> do
 
-  ops <- asyncStick sup $ fix \next -> do
+  ops <- async $ fix \next -> do
     s <- atomically $ do TBMQ.readTBMQueue ( ss ^. storageOpQ )
     case s of
       Nothing -> pure ()
       Just a  -> a >> next
 
-  killer <- asyncStick sup $ forever $ do
+  killer <- async $ forever $ do
     pause ( 30 :: Timeout 'Seconds ) -- FIXME: setting
     simpleAddTask ss $ do
 
@@ -186,7 +184,7 @@ simpleStorageWorker ss = do
 
         writeTVar ( ss ^. storageMMaped ) survived
 
-  killerLRU <- asyncStick sup $ forever $ do
+  killerLRU <- async $ forever $ do
     pause ( 10 :: Timeout 'Seconds ) -- FIXME: setting
     atomically $ writeTVar ( ss ^. storageMMapedLRU ) mempty
 
diff --git a/hbs2-storage-simple/lib/HBS2/Storage/Simple/Extra.hs b/hbs2-storage-simple/lib/HBS2/Storage/Simple/Extra.hs
index 05d09022..bbeee924 100644
--- a/hbs2-storage-simple/lib/HBS2/Storage/Simple/Extra.hs
+++ b/hbs2-storage-simple/lib/HBS2/Storage/Simple/Extra.hs
@@ -21,7 +21,7 @@ import Data.ByteString.Char8 qualified as BS
 import System.FilePath
 import Data.Maybe
 import Control.Concurrent.STM
--- import Control.Concurrent.Async
+import Control.Concurrent.Async
 import Control.Monad
 
 import Streaming.Prelude qualified as S
diff --git a/hbs2-storage-simple/test/TestSimpleStorage.hs b/hbs2-storage-simple/test/TestSimpleStorage.hs
index abde354a..fadda6e4 100644
--- a/hbs2-storage-simple/test/TestSimpleStorage.hs
+++ b/hbs2-storage-simple/test/TestSimpleStorage.hs
@@ -11,6 +11,7 @@ import Control.Monad.Except
 import Control.Monad
 import Data.Traversable
 import Data.Foldable
+import Control.Concurrent.Async
 import Control.Concurrent
 import Data.ByteString.Lazy qualified as LBS
 import Data.Maybe
diff --git a/hbs2-tests/test/TestTCP.hs b/hbs2-tests/test/TestTCP.hs
index a4b8d7c4..08f81479 100644
--- a/hbs2-tests/test/TestTCP.hs
+++ b/hbs2-tests/test/TestTCP.hs
@@ -16,6 +16,7 @@ import Control.Monad.Writer hiding (listen)
 import Test.Tasty.HUnit
 
 import Data.ByteString.Lazy (ByteString)
+import Control.Concurrent.Async
 import Lens.Micro.Platform
 import Codec.Serialise
 
diff --git a/hbs2-tests/test/TestTCPNet.hs b/hbs2-tests/test/TestTCPNet.hs
index b93292b1..e57fcd37 100644
--- a/hbs2-tests/test/TestTCPNet.hs
+++ b/hbs2-tests/test/TestTCPNet.hs
@@ -16,6 +16,7 @@ import Control.Monad.Writer hiding (listen)
 import Test.Tasty.HUnit
 
 import Data.ByteString.Lazy (ByteString)
+import Control.Concurrent.Async
 import Lens.Micro.Platform
 import Codec.Serialise
 import System.Environment
diff --git a/hbs2/Main.hs b/hbs2/Main.hs
index 8aa08796..afd5d721 100644
--- a/hbs2/Main.hs
+++ b/hbs2/Main.hs
@@ -2,7 +2,6 @@ module Main where
 
 import HBS2.Base58
 import HBS2.Data.Detect
-import HBS2.Concurrent.Supervisor
 import HBS2.Data.Types
 import HBS2.Defaults
 import HBS2.Merkle
@@ -19,6 +18,7 @@ import HBS2.OrDie
 
 import HBS2.System.Logger.Simple hiding (info)
 
+import Control.Concurrent.Async
 import Control.Concurrent.STM
 import Control.Monad
 import Control.Monad.Trans.Maybe
@@ -356,7 +356,7 @@ runRefLogGet s ss = do
     exitSuccess
 
 withStore :: Data opts => opts -> ( SimpleStorage HbSync -> IO () ) -> IO ()
-withStore opts f = withAsyncSupervisor "in withStore" \sup -> do
+withStore opts f = do
 
   setLogging @DEBUG  debugPrefix
   setLogging @INFO   defLog
@@ -371,7 +371,7 @@ withStore opts f = withAsyncSupervisor "in withStore" \sup -> do
   let pref = uniLastDef xdg opts :: StoragePrefix
   s <- simpleStorageInit (Just pref)
 
-  w <- replicateM 4 $ asyncStick sup $ simpleStorageWorker s
+  w <- replicateM 4 $ async $ simpleStorageWorker s
 
   f s
 
diff --git a/hbs2/hbs2.cabal b/hbs2/hbs2.cabal
index 9a6d0965..ec761066 100644
--- a/hbs2/hbs2.cabal
+++ b/hbs2/hbs2.cabal
@@ -91,8 +91,6 @@ executable hbs2
                     , uuid
                     , terminal-progress-bar
                     , stm
-                    , unliftio
-                    , unliftio-core
 
     hs-source-dirs:   .
     default-language: Haskell2010