Resolving dependencies... Configuring mtl-2.2.1... Configuring editline-0.2.1.0... Building mtl-2.2.1... Failed to install editline-0.2.1.0 Build log ( /home/builder/.cabal/logs/editline-0.2.1.0.log ): cabal: Entering directory '/tmp/cabal-tmp-10205/editline-0.2.1.0' Configuring editline-0.2.1.0... checking for gcc... /usr/bin/gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether /usr/bin/gcc accepts -g... yes checking for /usr/bin/gcc option to accept ISO C89... none needed checking for tputs in -lncurses... yes checking for el_init... no checking for readline... no checking how to run the C preprocessor... /usr/bin/gcc -E checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for ANSI C header files... no checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking editline/readline.h usability... no checking editline/readline.h presence... no checking for editline/readline.h... no checking editline/editline.h usability... no checking editline/editline.h presence... no checking for editline/editline.h... no checking readline/readline.h usability... yes checking readline/readline.h presence... yes checking for readline/readline.h... yes checking for sign of read_history result on error... negative checking for rl_completion_matches... no checking for completion_matches... no configure: error: editline not found, so this package cannot be built See `config.log' for more details. cabal: Leaving directory '/tmp/cabal-tmp-10205/editline-0.2.1.0' Installed mtl-2.2.1 cabal: Error: some packages failed to install: editline-0.2.1.0 failed during the configure step. The exception was: ExitFailure 1 lambdacube-2008.12.25 depends on editline-0.2.1.0 which failed to install.