3 files changed, 8 insertions, 5 deletions

diff --git a/src/Trivstream/Options.hs b/src/Trivstream/Options.hs
index a777942..1762f60 100644
--- a/src/Trivstream/Options.hs
+++ b/src/Trivstream/Options.hs
@@ -8,6 +8,7 @@ module Trivstream.Options
 import Trivstream.Types
 import Trivstream.Options.Utils
 import Paths_trivstream (version)
+import Development.GitRev
 
 
 import Options.Applicative
@@ -16,7 +17,7 @@ import Control.Monad.Reader
 import Control.Monad.IO.Class
 
 
-withOptions :: MonadIO m => ReaderT Configuration a -> IO a
+withOptions :: MonadIO m => ReaderT Configuration m a -> m a
 withOptions f = liftIO (execParser options) >>= runReaderT f
   where
     options = options' `info` mconcat [ header $ concat [ "trivstream "
diff --git a/src/Trivstream/Options/Utils.hs b/src/Trivstream/Options/Utils.hs
index 30694d8..bab27b3 100644
--- a/src/Trivstream/Options/Utils.hs
+++ b/src/Trivstream/Options/Utils.hs
@@ -8,6 +8,7 @@ import Options.Applicative
 
 import Data.Char
 import Data.Maybe
+import Text.Read (readMaybe)
 
 import Network.Socket
 
diff --git a/src/Trivstream/Types.hs b/src/Trivstream/Types.hs
index 8cdd592..6dbd949 100644
--- a/src/Trivstream/Types.hs
+++ b/src/Trivstream/Types.hs
@@ -7,6 +7,7 @@ module Trivstream.Types
   , SampleRate(..)
   , Configuration(..)
   , Mode (..)
+  , module Data.Default.Class
   ) where
 
 
@@ -32,7 +33,7 @@ instance Serialize ChannelPosition
 
 
 data AudioBackend = Pulse | Jack
-  deriving (Enum, Eq, Generic)
+  deriving (Enum, Eq, Generic, Show, Read)
 
 instance Default AudioBackend where
   def = Pulse
@@ -54,7 +55,7 @@ instance Serialize SampleRate
 data AudioConfig = AudioConfig
   { _aBackend  :: AudioBackend
   , _aChannels :: [Maybe ChannelPosition]
-  , _aRate     :: SampleRate
+  , _aRate     :: Maybe SampleRate
   } deriving (Generic)
 makeLenses ''AudioConfig
 
@@ -62,14 +63,14 @@ instance Default AudioConfig where
   def = AudioConfig
     { _aBackend  = def
     , _aChannels = [Just $ ChannelNormal PanLeft, Just $ ChannelNormal PanRight]
-    , _aRate     = def
+    , _aRate     = Just def
     }
 
 instance Serialize AudioConfig
 
 
 data Mode = Server | Client
-  deriving (Enum, Eq, Generic, Show)
+  deriving (Enum, Eq, Generic, Show, Read)
 
 instance Default Mode where
   def = Server