Resolving dependencies...
Configuring newtype-0.2...
Configuring primitive-0.6.2.0...
Building newtype-0.2...
Building primitive-0.6.2.0...
Installed newtype-0.2
Configuring random-1.1...
Building random-1.1...
Installed random-1.1
Installed primitive-0.6.2.0
Configuring tf-random-0.5...
Building tf-random-0.5...
Installed tf-random-0.5
Configuring QuickCheck-2.9.2...
Building QuickCheck-2.9.2...
Installed QuickCheck-2.9.2
Configuring HCodecs-0.5...
Building HCodecs-0.5...
Installed HCodecs-0.5
Configuring hamid-0.7...
Building hamid-0.7...
Failed to install hamid-0.7
Build log ( /home/builder/.cabal/logs/hamid-0.7.log ):
cabal: Entering directory '/tmp/cabal-tmp-13174/hamid-0.7'
Configuring hamid-0.7...
Warning: 'ghc-options: -threaded' has no effect for libraries. It should only
be used for executables.
Building hamid-0.7...
Preprocessing library hamid-0.7...
[1 of 3] Compiling System.MIDI.Base ( src/System/MIDI/Base.hs, dist/build/System/MIDI/Base.o )
[2 of 3] Compiling System.MIDI.Placeholder ( src/System/MIDI/Placeholder.hs, dist/build/System/MIDI/Placeholder.o )
[3 of 3] Compiling System.MIDI      ( src/System/MIDI.hs, dist/build/System/MIDI.o )

src/System/MIDI.hs:96:15: error:
    • No instance for (Eq S.Source)
        arising from the 'deriving' clause of a data type declaration
      Possible fix:
        use a standalone 'deriving instance' declaration,
          so you can specify the instance context yourself
      There are instances for similar types:
        instance Eq Source -- Defined at src/System/MIDI.hs:96:15
    • When deriving the instance for (Eq Source)

src/System/MIDI.hs:100:15: error:
    • No instance for (Eq S.Destination)
        arising from the 'deriving' clause of a data type declaration
      Possible fix:
        use a standalone 'deriving instance' declaration,
          so you can specify the instance context yourself
      There are instances for similar types:
        instance Eq Destination -- Defined at src/System/MIDI.hs:100:15
    • When deriving the instance for (Eq Destination)
cabal: Leaving directory '/tmp/cabal-tmp-13174/hamid-0.7'
cabal: Error: some packages failed to install:
hamid-0.7 failed during the building phase. The exception was:
ExitFailure 1