Resolving dependencies... Configuring mtl-2.2.1... Building mtl-2.2.1... Installed mtl-2.2.1 Downloading opencog-atomspace-0.1.0.0... Configuring opencog-atomspace-0.1.0.0... Failed to install opencog-atomspace-0.1.0.0 Build log ( /home/builder/.cabal/logs/opencog-atomspace-0.1.0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-2362/opencog-atomspace-0.1.0.0' Configuring opencog-atomspace-0.1.0.0... cabal: Missing dependency on a foreign library: * Missing C library: atomspace-cwrapper This problem can usually be solved by installing the system package that provides this library (you may need the "-dev" version). If the library is already installed but in a non-standard location then you can use the flags --extra-include-dirs= and --extra-lib-dirs= to specify where it is. cabal: Leaving directory '/tmp/cabal-tmp-2362/opencog-atomspace-0.1.0.0' cabal: Error: some packages failed to install: opencog-atomspace-0.1.0.0 failed during the configure step. The exception was: ExitFailure 1