Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: shaker (user goal)
rejecting: shaker-0.5.1, shaker-0.5.0, shaker-0.4.3, shaker-0.4.2,
shaker-0.4.1, shaker-0.4 (constraint from user target requires ==0.3.1)
trying: shaker-0.3.1
trying: base-4.9.0.0/installed-4.9... (dependency of shaker-0.3.1)
trying: deepseq-1.4.2.0/installed-1.4... (dependency of
pretty-1.1.3.3/installed-1.1...)
trying: old-time-1.1.0.3 (dependency of shaker-0.3.1)
next goal: haskell98 (dependency of shaker-0.3.1)
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 (conflict: deepseq =>
array==0.5.1.1/installed-0.5..., haskell98 => array>=0.3 && <0.5)
rejecting: haskell98-2.0.0.0 (conflict: old-time==1.1.0.3, haskell98 =>
old-time>=1.0 && <1.1)
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.