Hello list, I am trying to cabal install hbro. After a bit of fiddling I stumbled on this: Resolving dependencies... Configuring hbro-1.1.2.1... Building hbro-1.1.2.1... Preprocessing library hbro-1.1.2.1... [ 1 of 19] Compiling Paths_hbro ( dist/build/autogen/Paths_hbro.hs, dist/build/Paths_hbro.o ) [ 2 of 19] Compiling Hbro.Keys ( Hbro/Keys.hs, dist/build/Hbro/Keys.o ) Loading package ghc-prim ... linking ... done. [omissis] Loading package semigroups-0.12.2 ... linking ... done. Loading package zeromq3-haskell-0.5.1 ... linking ... ghc: /home/user/.cabal/lib/zeromq3-haskell-0.5.1/ghc-7.4.1/HSzeromq3-haskell-0.5.1.o: unknown symbol `zmq_ctx_new' ghc: unable to load package `zeromq3-haskell-0.5.1' cabal: Error: some packages failed to install: hbro-1.1.2.1 failed during the building phase. The exception was: ExitFailure 1 I am puzzled because I cabal installed zeromq3-haskell *and* downloaded/installed 0mq3 (./configure; make; su; make install). 0mq version is 3.2.5 and I am running debian/stable(i386). Any idea on what is happening here? Thanks in advance -F