Resolving dependencies...
Downloading libpq-0.1...
Configuring libpq-0.1...
Building libpq-0.1...
Preprocessing library libpq-0.1...
PQ.hsc:140:22: fatal error: libpq-fe.h: No such file or directory
compilation terminated.
compiling dist/build/Database/PQ_hsc_make.c failed (exit code 1)
command was: /usr/bin/gcc -c dist/build/Database/PQ_hsc_make.c -o dist/build/Database/PQ_hsc_make.o -fno-stack-protector -D__GLASGOW_HASKELL__=708 -Dlinux_BUILD_OS=1 -Dx86_64_BUILD_ARCH=1 -Dlinux_HOST_OS=1 -Dx86_64_HOST_ARCH=1 -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/opt/ghc/7.8.3/lib/ghc-7.8.3/unix-2.7.0.1/include -I/opt/ghc/7.8.3/lib/ghc-7.8.3/time-1.4.2/include -I/opt/ghc/7.8.3/lib/ghc-7.8.3/bytestring-0.10.4.0/include -I/opt/ghc/7.8.3/lib/ghc-7.8.3/base-4.7.0.1/include -I/opt/ghc/7.8.3/lib/ghc-7.8.3/integer-gmp-0.5.1.0/include -I/opt/ghc/7.8.3/lib/ghc-7.8.3/include -I/opt/ghc/7.8.3/lib/ghc-7.8.3/include/
Failed to install libpq-0.1
cabal: Error: some packages failed to install:
libpq-0.1 failed during the building phase. The exception was:
ExitFailure 1