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 text-1.2.2.1... Building text-1.2.2.1... Configuring tuple-0.3.0.2... Installed file-embed-0.0.10 Building tuple-0.3.0.2... Configuring clr-host-0.1.0.0... Installed text-1.2.2.1 Failed to install clr-host-0.1.0.0 Build log ( /home/builder/.cabal/logs/clr-host-0.1.0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-18197/clr-host-0.1.0.0' [1 of 1] Compiling Main ( /tmp/cabal-tmp-18197/clr-host-0.1.0.0/dist/setup/setup.hs, /tmp/cabal-tmp-18197/clr-host-0.1.0.0/dist/setup/Main.o ) Linking /tmp/cabal-tmp-18197/clr-host-0.1.0.0/dist/setup/setup ... Configuring clr-host-0.1.0.0... setup: The program 'csc' is required but it could not be found. cabal: Leaving directory '/tmp/cabal-tmp-18197/clr-host-0.1.0.0' Installed tuple-0.3.0.2 cabal: Error: some packages failed to install: clr-host-0.1.0.0 failed during the configure step. The exception was: ExitFailure 1 clr-marshal-0.1.0.0 depends on clr-host-0.1.0.0 which failed to install. clr-typed-0.1.0.0 depends on clr-host-0.1.0.0 which failed to install.