Resolving dependencies... Downloading BerkeleyDB-0.1... [1 of 1] Compiling Main ( /tmp/BerkeleyDB-0.1-15236/BerkeleyDB-0.1/Setup.hs, /tmp/BerkeleyDB-0.1-15236/BerkeleyDB-0.1/dist/setup/Main.o ) Linking /tmp/BerkeleyDB-0.1-15236/BerkeleyDB-0.1/dist/setup/setup ... Configuring BerkeleyDB-0.1... Warning: No 'build-type' specified. If you do not need a custom Setup.hs or ./configure script then use 'build-type: Simple'. setup: Missing dependency on a foreign library: * Missing (or bad) header file: db.h 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. If the header file does exist, it may contain errors that are caught by the C compiler at the preprocessing stage. In this case you can re-run configure with the verbosity flag -v3 to see the error messages. Failed to install BerkeleyDB-0.1 cabal: Error: some packages failed to install: BerkeleyDB-0.1 failed during the configure step. The exception was: ExitFailure 1