Resolving dependencies...
Downloading network-msg-0.3...
Configuring network-msg-0.3...
Building network-msg-0.3...
Preprocessing library network-msg-0.3...
[1 of 6] Compiling Network.Socket.Msg.IOVec ( dist/build/Network/Socket/Msg/IOVec.hs, dist/build/Network/Socket/Msg/IOVec.o )
[2 of 6] Compiling Network.Socket.Msg.MsgHdr ( dist/build/Network/Socket/Msg/MsgHdr.hs, dist/build/Network/Socket/Msg/MsgHdr.o )
[3 of 6] Compiling Network.Socket.Msg.Internal ( Network/Socket/Msg/Internal.hs, dist/build/Network/Socket/Msg/Internal.o )
[4 of 6] Compiling Network.Socket.Msg.CMsg ( dist/build/Network/Socket/Msg/CMsg.hs, dist/build/Network/Socket/Msg/CMsg.o )

Network/Socket/Msg/CMsg.hsc:52:26: Not in scope: `decodeOrFail'
Failed to install network-msg-0.3
cabal: Error: some packages failed to install:
network-msg-0.3 failed during the building phase. The exception was:
ExitFailure 1