Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: bird (user goal)
rejecting: bird-0.0.19, bird-0.0.18, bird-0.0.17, bird-0.0.16, bird-0.0.15,
bird-0.0.14, bird-0.0.13, bird-0.0.12, bird-0.0.11, bird-0.0.10, bird-0.0.9,
bird-0.0.8, bird-0.0.7, bird-0.0.6 (constraint from user target requires
==0.0.3)
trying: bird-0.0.3
trying: base-4.9.0.0/installed-4.9... (dependency of bird-0.0.3)
trying: directory-1.2.6.2/installed-1.2... (dependency of
happstack-server-7.4.6.2)
next goal: haskell98 (dependency of bird-0.0.3)
rejecting: haskell98-2.0.0.3 (conflict: base==4.9.0.0/installed-4.9...,
haskell98 => base>=4.7 && <4.8)
rejecting: haskell98-2.0.0.2 (conflict: base==4.9.0.0/installed-4.9...,
haskell98 => base==4.6.*)
rejecting: haskell98-2.0.0.1, haskell98-2.0.0.0 (conflict:
directory==1.2.6.2/installed-1.2..., haskell98 => directory>=1.1 && <1.2)
rejecting: haskell98-1.1.0.1, haskell98-1.1.0.0, haskell98-1.0.1.1 (conflict:
base==4.9.0.0/installed-4.9..., haskell98 => base>=3 && <4.6)
rejecting: haskell98-1.0.1.0 (conflict: base==4.9.0.0/installed-4.9...,
haskell98 => base<4.6)
rejecting: haskell98-1.0 (conflict: base==4.9.0.0/installed-4.9..., haskell98
=> base<4.3)
Backjump limit reached (currently 2000, change with --max-backjumps or try to
run with --reorder-goals).