Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: husk-scheme (user goal)
rejecting: husk-scheme-3.19.3, husk-scheme-3.19.2, husk-scheme-3.19.1,
husk-scheme-3.19, husk-scheme-3.18, husk-scheme-3.17.1, husk-scheme-3.17,
husk-scheme-3.16.1, husk-scheme-3.16, husk-scheme-3.15.2, husk-scheme-3.15.1,
husk-scheme-3.15, husk-scheme-3.14, husk-scheme-3.13, husk-scheme-3.12,
husk-scheme-3.11, husk-scheme-3.10, husk-scheme-3.9, husk-scheme-3.8,
husk-scheme-3.7, husk-scheme-3.6.3, husk-scheme-3.6.2, husk-scheme-3.6.1,
husk-scheme-3.6, husk-scheme-3.5.7, husk-scheme-3.5.6, husk-scheme-3.5.5,
husk-scheme-3.5.4, husk-scheme-3.5.3.2, husk-scheme-3.5.3.1,
husk-scheme-3.5.3, husk-scheme-3.5.2.3, husk-scheme-3.5.2.2,
husk-scheme-3.5.2.1, husk-scheme-3.5.2, husk-scheme-3.5.1, husk-scheme-3.4.4,
husk-scheme-3.4.3, husk-scheme-3.4.2 (constraint from user target requires
==3.4.1)
trying: husk-scheme-3.4.1
trying: base-4.9.0.0/installed-4.9... (dependency of husk-scheme-3.4.1)
trying: ghc-8.0.1.20161018/installed-8.0... (dependency of husk-scheme-3.4.1)
next goal: haskell98 (dependency of husk-scheme-3.4.1)
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: ghc =>
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)
Dependency tree exhaustively searched.