Re: [Haskell-beginners] Problems with installing lambdabot

Ok, after changing this the linker error is gone. But now I get a compile error close to the place the linker error previously occurred: [28 of 79] Compiling Plugin.Activity ( Plugin/Activity.hs, dist/build/lambdabot/lambdabot-tmp/Plugin/Activity.o ) [...] Loading package IOSpec-0.2.5 ... linking ... done. Plugin/Activity.hs:18:10: Illegal instance declaration for `Module ActivityModule ActivityState' (All instance types must be of the form (T a1 ... an) where a1 ... an are *distinct type variables*, and each type variable appears at most once in the instance head. Use -XFlexibleInstances if you want to disable this.) In the instance declaration for `Module ActivityModule ActivityState' cabal: Error: some packages failed to install: lambdabot-4.2.3.2 failed during the building phase. The exception was: ExitFailure 1 On 07/03/2012 09:47 PM, Brandon Allbery wrote:

On Tue, Jul 3, 2012 at 3:16 PM, Antoras mailto:mail@antoras.de> wrote:

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)

Your Linux distribution pulled a cute stunt that throws the dynamic loader (used for TH and ghci and a few other things) for a loop: libncurses.so, for backward compatibility purposes, is a GNU ld linker script which references libncursesw.so in a way the dynamic loader doesn't understand. You can work around this in one of two ways:

1. replace /usr/lib/libncurses.so with a symlink to /usr/lib/libncursesw.so; OR 2. edit /usr/lib/libncurses.so, which is a text file (linker script), to reference "/usr/lib/libncursesw.so" instead of "-lncursesw".

-- brandon s allbery allbery.b@gmail.com mailto:allbery.b@gmail.com wandering unix systems administrator (available) (412) 475-9364 vm/sms