Hi Judah, after installing rpm packages libedit0-2.10.snap20070831-5 libedit-devel-2.10.snap20070831-5 I get the error below for "cabal install editline" Cheers Christian checking editline/readline.h usability... yes checking editline/readline.h presence... yes checking for editline/readline.h... yes checking for sign of read_history result on error... positive configure: creating ./config.status config.status: creating editline.buildinfo config.status: creating include/HsEditlineConfig.h Preprocessing library editline-0.2... In file included from Editline.hsc:52:0: include/HsEditline.h:11:0: error: conflicting types for 'el_get' /usr/include/histedit.h:112:0: error: previous declaration of 'el_get' was here compiling dist/build/System/Console/Editline_hsc_make.c failed command was: /home/linux-bkb/ghc/ghc-6.8.3/bin/ghc -c -package base-3.0.2.0 -Iinclude dist/build/System/Console/Editline_hsc_make.c -o dist/build/System/Console/Editline_hsc_make.o cabal: Error: some packages failed to install: editline-0.2 failed during the building phase. The exception was: exit: ExitFailure 1