diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,5 +1,3 @@
 # climb
 
-[![CircleCI](https://circleci.com/gh/ejconlon/climb/tree/master.svg?style=svg)](https://circleci.com/gh/ejconlon/climb/tree/master)
-
 Building blocks for a GHCI-like REPL with colon-commands. (Not production ready!) See the [demo app](https://github.com/ejconlon/climb/blob/master/app/Main.hs) for usage, or see the lower-level [haskell-linenoise](https://github.com/ejconlon/haskell-linenoise) library this depends on.
diff --git a/Setup.hs b/Setup.hs
deleted file mode 100644
--- a/Setup.hs
+++ /dev/null
@@ -1,2 +0,0 @@
-import Distribution.Simple
-main = defaultMain
diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -18,11 +18,12 @@
 
 instance Exception BadGuessErr
 
-data ReplEnv = ReplEnv
-  { reMagicNumber :: !Int
-  } deriving stock (Eq, Show)
+newtype ReplEnv = ReplEnv
+  { reMagicNumber :: Int
+  }
+  deriving stock (Eq, Show)
 
-newtype ReplM a = ReplM { unReplM :: ReaderT ReplEnv IO a }
+newtype ReplM a = ReplM {unReplM :: ReaderT ReplEnv IO a}
   deriving newtype (Functor, Applicative, Monad, MonadReader ReplEnv, MonadIO, MonadUnliftIO, MonadThrow, MonadCatch)
 
 runReplM :: ReplM a -> ReplEnv -> IO a
@@ -49,14 +50,15 @@
 completion _ = pure []
 
 replDef :: ReplDef ReplM
-replDef = ReplDef
-  { rdOnInterrupt = ReplContinue
-  , rdGreeting = "Hello, REPL!"
-  , rdPrompt = "> "
-  , rdOptionCommands = options
-  , rdExecCommand = exec
-  , rdCompletion = completion
-  }
+replDef =
+  ReplDef
+    { rdOnInterrupt = ReplContinue
+    , rdGreeting = "Hello, REPL!"
+    , rdPrompt = "> "
+    , rdOptionCommands = options
+    , rdExecCommand = exec
+    , rdCompletion = completion
+    }
 
 main :: IO ()
 main = runReplM (runReplDef replDef) (ReplEnv 42)
diff --git a/climb.cabal b/climb.cabal
--- a/climb.cabal
+++ b/climb.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.34.4.
+-- This file has been generated from package.yaml by hpack version 0.36.0.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: f41c917ee50a977a56b9761e243421d7b49b0f973556aad566f526b406bf51d8
+-- hash: a74d63a6492ae659aa9ca016c20dbb590adfb5e347df479d81021fe81895cec1
 
 name:           climb
-version:        0.4.1
+version:        0.5.0
 synopsis:       Building blocks for a GHCi-like REPL with colon-commands
 description:    Please see the README on GitHub at <https://github.com/ejconlon/climb#readme>
 category:       User Interfaces
@@ -42,9 +42,9 @@
     , bytestring >=0.10 && <1
     , containers >=0.6 && <1
     , exceptions >=0.10 && <1
-    , linenoise >=0.3.2 && <1
+    , linenoise >=0.4.0 && <1
     , mtl >=2.2 && <3
-    , text >=1.2 && <2
+    , text >=1.2 && <3
     , unliftio-core >=0.1 && <1
   default-language: Haskell2010
 
@@ -64,8 +64,8 @@
     , climb
     , containers >=0.6 && <1
     , exceptions >=0.10 && <1
-    , linenoise >=0.3.2 && <1
+    , linenoise >=0.4.0 && <1
     , mtl >=2.2 && <3
-    , text >=1.2 && <2
+    , text >=1.2 && <3
     , unliftio-core >=0.1 && <1
   default-language: Haskell2010
diff --git a/src/Climb.hs b/src/Climb.hs
--- a/src/Climb.hs
+++ b/src/Climb.hs
@@ -13,7 +13,8 @@
   , noCompletion
   , runReplDef
   , stepReplDef
-  ) where
+  )
+where
 
 import Control.Exception (Exception (..), SomeAsyncException (..), SomeException)
 import Control.Monad (unless)
@@ -40,24 +41,23 @@
 
 -- | Sometimes things go wrong...
 data CommandErr
-  = CommandErrExpectedNoInput
-  -- ^ An option 'Command' got input when it expected None
-  | CommandErrUnknownCommand !Text
-  -- ^ An option 'Command' was not found by name.
+  = -- | An option 'Command' got input when it expected None
+    CommandErrExpectedNoInput
+  | -- | An option 'Command' was not found by name.
+    CommandErrUnknownCommand !Text
   deriving stock (Eq, Show)
 
 instance Exception CommandErr
 
 -- | Defines a REPL with commands, options, and completion.
-data ReplDef m =
-  ReplDef
-    { rdOnInterrupt :: !ReplDirective
-    , rdGreeting :: !Text
-    , rdPrompt :: !Text
-    , rdOptionCommands :: !(OptionCommands m)
-    , rdExecCommand :: !(Command m)
-    , rdCompletion :: !(Completion m)
-    }
+data ReplDef m = ReplDef
+  { rdOnInterrupt :: !ReplDirective
+  , rdGreeting :: !Text
+  , rdPrompt :: !Text
+  , rdOptionCommands :: !(OptionCommands m)
+  , rdExecCommand :: !(Command m)
+  , rdCompletion :: !(Completion m)
+  }
 
 noOptionCommands :: OptionCommands m
 noOptionCommands = Map.empty
@@ -82,7 +82,8 @@
   pure ReplContinue
 
 defaultOptions :: (MonadThrow m, MonadIO m) => OptionCommands m -> OptionCommands m
-defaultOptions opts = Map.fromList
+defaultOptions opts =
+  Map.fromList
     [ ("quit", ("quit", quitCommand))
     , ("help", ("describe all commands", helpCommand opts))
     ]
@@ -91,7 +92,7 @@
 outerCommand opts exec input =
   case Text.uncons input of
     Just (':', rest) -> do
-      let (name, subInput) = Text.break (==' ') rest
+      let (name, subInput) = Text.break (== ' ') rest
       case Map.lookup name opts of
         Nothing -> throwM (CommandErrUnknownCommand name)
         Just (_, command) -> command (Text.drop 1 subInput)