I tried to install labdabot with 'cabal install lambdabot' and after some minutes cabal aborts with an error message (see end of mail). I use ArchLinux 64Bit and the following software versions: $ cabal -V cabal-install version 0.14.0 using version 1.14.0 of the Cabal library $ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.4.2 $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.1/lto-wrapper Target: x86_64-unknown-linux-gnu [...] gcc version 4.7.1 (GCC) Does someone know what's the problem here? Error message: $ cabal install lambdabot Resolving dependencies... Configuring lambdabot-4.2.3.2... Building lambdabot-4.2.3.2... Preprocessing executable 'lambdabot' for lambdabot-4.2.3.2... [...] [28 of 79] Compiling Plugin.Activity ( Plugin/Activity.hs, dist/build/lambdabot/lambdabot-tmp/Plugin/Activity.o ) Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading package Boolean-0.0.1 ... linking ... done. Loading package array-0.4.0.0 ... linking ... done. Loading package deepseq-1.3.0.0 ... linking ... done. Loading package containers-0.4.2.1 ... linking ... done. Loading package semigroups-0.8.3.2 ... linking ... done. Loading package void-0.5.6 ... linking ... done. Loading package MemoTrie-0.5 ... linking ... done. Loading package NumInstances-1.0 ... linking ... done. Loading package vector-space-0.8.1 ... linking ... done. Loading package transformers-0.3.0.0 ... linking ... done. Loading package mtl-2.1.2 ... linking ... done. Loading package bytestring-0.9.2.1 ... linking ... done. Loading package unix-2.5.1.1 ... linking ... done. Loading package unlambda-0.1 ... linking ... done. Loading package extensible-exceptions-0.1.1.4 ... linking ... done. Loading package old-locale-1.0.0.4 ... linking ... done. Loading package time-1.4 ... linking ... done. Loading package random-1.0.1.1 ... linking ... done. Loading package pretty-1.1.1.0 ... linking ... done. Loading package template-haskell ... linking ... done. Loading package QuickCheck-2.5 ... linking ... done. Loading package dlist-0.5 ... linking ... done. Loading package smallcheck-0.6.1 ... linking ... done. Loading package syb-0.3.6.2 ... linking ... done. Loading package show-0.4.1.2 ... linking ... done. Loading package filepath-1.3.0.0 ... linking ... done. Loading package old-time-1.1.0.0 ... linking ... done. Loading package directory-1.1.0.2 ... linking ... done. Loading package process-1.1.0.1 ... linking ... done. Loading package readline-1.0.1.0 ... <command line>: can't load .so/.DLL for: /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.1/../../../../lib/libncurses.so (-lncursesw: cannot open shared object file: No such file or directory) cabal: Error: some packages failed to install: lambdabot-4.2.3.2 failed during the building phase. The exception was: ExitFailure 1 cabal install lambdabot 15.19s user 0.67s system 96% cpu 16.413 total