Resolving dependencies... Configuring Boolean-0.2.3... Configuring NumInstances-1.4... Building NumInstances-1.4... Building Boolean-0.2.3... Installed Boolean-0.2.3 Configuring newtype-0.2... Building newtype-0.2... Configuring newtype-generics-0.5... Installed NumInstances-1.4 Building newtype-generics-0.5... Configuring random-1.1... Installed newtype-0.2 Building random-1.1... Configuring primitive-0.6.2.0... Installed newtype-generics-0.5 Building primitive-0.6.2.0... Configuring stm-2.4.4.1... Installed random-1.1 Building stm-2.4.4.1... Configuring MemoTrie-0.6.7... Installed stm-2.4.4.1 Building MemoTrie-0.6.7... Installed primitive-0.6.2.0 Configuring tf-random-0.5... Building tf-random-0.5... Installed MemoTrie-0.6.7 Configuring vector-space-0.10.4... Building vector-space-0.10.4... Installed tf-random-0.5 Configuring QuickCheck-2.9.2... Building QuickCheck-2.9.2... Installed vector-space-0.10.4 Installed QuickCheck-2.9.2 Configuring HCodecs-0.5... Building HCodecs-0.5... Installed HCodecs-0.5 Configuring hamid-0.10... Building hamid-0.10... Installed hamid-0.10 Configuring reenact-0.7.5... Building reenact-0.7.5... Failed to install reenact-0.7.5 Build log ( /home/builder/.cabal/logs/reenact-0.7.5.log ): cabal: Entering directory '/tmp/cabal-tmp-29836/reenact-0.7.5' Configuring reenact-0.7.5... Building reenact-0.7.5... Preprocessing library reenact-0.7.5... [1 of 5] Compiling Control.Reactive.Var ( src/Control/Reactive/Var.hs, dist/build/Control/Reactive/Var.o ) [2 of 5] Compiling Control.Reactive.Util ( src/Control/Reactive/Util.hs, dist/build/Control/Reactive/Util.o ) [3 of 5] Compiling Control.Reactive.Chan ( src/Control/Reactive/Chan.hs, dist/build/Control/Reactive/Chan.o ) [4 of 5] Compiling Control.Reactive ( src/Control/Reactive.hs, dist/build/Control/Reactive.o ) src/Control/Reactive.hs:633:10: warning: [-Wmissing-methods] • No explicit implementation for either ‘compare’ or ‘<=’ • In the instance declaration for ‘Ord (Reactive b)’ [5 of 5] Compiling Control.Reactive.Midi ( src/Control/Reactive/Midi.hs, dist/build/Control/Reactive/Midi.o ) src/Control/Reactive/Midi.hs:34:1: error: Failed to load interface for ‘System.MIDI’ Perhaps you meant System.IO (from base-4.9.0.0) System.Mem (from base-4.9.0.0) System.Midi (from hamid-0.10) Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-29836/reenact-0.7.5' cabal: Error: some packages failed to install: reenact-0.7.5 failed during the building phase. The exception was: ExitFailure 1