2 Resolving dependencies...
3 Configuring zlib-1.1...
4 Warning: Flags 'con_flict', 'con-flict' all map to the same environment variable 'CABAL_FLAG_con_flict' causing a collision. The value first flag 'con_flict' will be used.
6 Preprocessing library for zlib-1.1...
7 Building library for zlib-1.1...