Resolving dependencies... Configuring lbfgs-0.0.1... Building lbfgs-0.0.1... Failed to install lbfgs-0.0.1 Build log ( /home/builder/.cabal/logs/lbfgs-0.0.1.log ): cabal: Entering directory '/tmp/cabal-tmp-7714/lbfgs-0.0.1' Configuring lbfgs-0.0.1... Building lbfgs-0.0.1... Preprocessing library lbfgs-0.0.1... Raw.hsc:4:0: warning: "hsc_alignment" redefined [enabled by default] In file included from dist/build/Numeric/LBFGS/Raw_hsc_make.c:1:0: /opt/ghc/8.0.2/lib/ghc-8.0.1.20161018/template-hsc.h:88:0: note: this is the location of the previous definition #define hsc_alignment(t...) \ ^ [1 of 2] Compiling Numeric.LBFGS.Raw ( dist/build/Numeric/LBFGS/Raw.hs, dist/build/Numeric/LBFGS/Raw.o ) Numeric/LBFGS/Raw.hsc:171:1: error: • Unacceptable argument type in foreign declaration: ‘CInt’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_evaluate_t_wrap :: CEvaluateFun a -> IO (FunPtr (CEvaluateFun a)) Numeric/LBFGS/Raw.hsc:171:1: error: • Unacceptable argument type in foreign declaration: ‘CDouble’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_evaluate_t_wrap :: CEvaluateFun a -> IO (FunPtr (CEvaluateFun a)) Numeric/LBFGS/Raw.hsc:171:1: error: • Unacceptable result type in foreign declaration: ‘CDouble’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_evaluate_t_wrap :: CEvaluateFun a -> IO (FunPtr (CEvaluateFun a)) Numeric/LBFGS/Raw.hsc:174:1: error: • Unacceptable argument type in foreign declaration: ‘CDouble’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_progress_t_wrap :: CProgressFun a -> IO (FunPtr (CProgressFun a)) Numeric/LBFGS/Raw.hsc:174:1: error: • Unacceptable argument type in foreign declaration: ‘CDouble’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_progress_t_wrap :: CProgressFun a -> IO (FunPtr (CProgressFun a)) Numeric/LBFGS/Raw.hsc:174:1: error: • Unacceptable argument type in foreign declaration: ‘CDouble’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_progress_t_wrap :: CProgressFun a -> IO (FunPtr (CProgressFun a)) Numeric/LBFGS/Raw.hsc:174:1: error: • Unacceptable argument type in foreign declaration: ‘CDouble’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_progress_t_wrap :: CProgressFun a -> IO (FunPtr (CProgressFun a)) Numeric/LBFGS/Raw.hsc:174:1: error: • Unacceptable argument type in foreign declaration: ‘CInt’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_progress_t_wrap :: CProgressFun a -> IO (FunPtr (CProgressFun a)) Numeric/LBFGS/Raw.hsc:174:1: error: • Unacceptable argument type in foreign declaration: ‘CInt’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_progress_t_wrap :: CProgressFun a -> IO (FunPtr (CProgressFun a)) Numeric/LBFGS/Raw.hsc:174:1: error: • Unacceptable argument type in foreign declaration: ‘CInt’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_progress_t_wrap :: CProgressFun a -> IO (FunPtr (CProgressFun a)) Numeric/LBFGS/Raw.hsc:174:1: error: • Unacceptable result type in foreign declaration: ‘CInt’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "wrapper" c_lbfgs_progress_t_wrap :: CProgressFun a -> IO (FunPtr (CProgressFun a)) Numeric/LBFGS/Raw.hsc:177:1: error: • Unacceptable argument type in foreign declaration: ‘CInt’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "static lbfgs.h lbfgs" c_lbfgs :: CInt -> Ptr CDouble -> Ptr CDouble -> FunPtr (CEvaluateFun a) -> FunPtr (CProgressFun a) -> Ptr a -> Ptr (CLBFGSParameter) -> IO (CInt) Numeric/LBFGS/Raw.hsc:177:1: error: • Unacceptable result type in foreign declaration: ‘CInt’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall safe "static lbfgs.h lbfgs" c_lbfgs :: CInt -> Ptr CDouble -> Ptr CDouble -> FunPtr (CEvaluateFun a) -> FunPtr (CProgressFun a) -> Ptr a -> Ptr (CLBFGSParameter) -> IO (CInt) Numeric/LBFGS/Raw.hsc:181:1: error: • Unacceptable argument type in foreign declaration: ‘CInt’ cannot be marshalled in a foreign call because its data constructor is not in scope Possible fix: import the data constructor to bring it into scope • When checking declaration: foreign import ccall unsafe "static lbfgs.h lbfgs_malloc" c_lbfgs_malloc :: CInt -> IO (Ptr CDouble) cabal: Leaving directory '/tmp/cabal-tmp-7714/lbfgs-0.0.1' cabal: Error: some packages failed to install: lbfgs-0.0.1 failed during the building phase. The exception was: ExitFailure 1