Resolving dependencies... Configuring OneTuple-0.2.1... Configuring file-embed-0.0.10... Building OneTuple-0.2.1... Building file-embed-0.0.10... Installed OneTuple-0.2.1 Configuring mtl-2.2.1... Building mtl-2.2.1... Configuring stm-2.4.4.1... Installed file-embed-0.0.10 Building stm-2.4.4.1... Configuring transformers-compat-0.5.1.4... Installed stm-2.4.4.1 Configuring text-1.2.2.2... Installed mtl-2.2.1 Building transformers-compat-0.5.1.4... Building text-1.2.2.2... Configuring tuple-0.3.0.2... Installed transformers-compat-0.5.1.4 Building tuple-0.3.0.2... Configuring void-0.7.2... Installed text-1.2.2.2 Building void-0.7.2... Installed void-0.7.2 Configuring mmorph-1.1.0... Building mmorph-1.1.0... Configuring exceptions-0.8.3... Installed tuple-0.3.0.2 Building exceptions-0.8.3... Configuring clr-marshal-0.2.0.0... Installed mmorph-1.1.0 Building clr-marshal-0.2.0.0... Installed clr-marshal-0.2.0.0 Configuring clr-typed-0.2.0... Building clr-typed-0.2.0... Configuring clr-host-0.2.0... Installed exceptions-0.8.3 Installed clr-typed-0.2.0 Configuring pipes-4.3.4... Building pipes-4.3.4... Failed to install clr-host-0.2.0 Build log ( /home/builder/.cabal/logs/clr-host-0.2.0.log ): cabal: Entering directory '/tmp/cabal-tmp-13579/clr-host-0.2.0' [1 of 1] Compiling Main ( /tmp/cabal-tmp-13579/clr-host-0.2.0/dist/setup/setup.hs, /tmp/cabal-tmp-13579/clr-host-0.2.0/dist/setup/Main.o ) Linking /tmp/cabal-tmp-13579/clr-host-0.2.0/dist/setup/setup ... Configuring clr-host-0.2.0... setup: The program 'csc' is required but it could not be found. cabal: Leaving directory '/tmp/cabal-tmp-13579/clr-host-0.2.0' Installed pipes-4.3.4 cabal: Error: some packages failed to install: clr-bindings-0.2.0 depends on clr-host-0.2.0 which failed to install. clr-host-0.2.0 failed during the configure step. The exception was: ExitFailure 1