Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: shelly (user goal)
rejecting: shelly-1.6.8.1, shelly-1.6.8, shelly-1.6.7, shelly-1.6.6,
shelly-1.6.5, shelly-1.6.4.1, shelly-1.6.4, shelly-1.6.3.4, shelly-1.6.3.3,
shelly-1.6.3.2, shelly-1.6.3.1, shelly-1.6.3, shelly-1.6.2.5, shelly-1.6.2.4,
shelly-1.6.2.3, shelly-1.6.2.2, shelly-1.6.2.1, shelly-1.6.2, shelly-1.6.1.2,
shelly-1.6.1.1, shelly-1.6.1, shelly-1.6.0.1, shelly-1.6.0, shelly-1.5.7,
shelly-1.5.6, shelly-1.5.5, shelly-1.5.4.1, shelly-1.5.4, shelly-1.5.3.2,
shelly-1.5.3.1, shelly-1.5.2, shelly-1.5.1.1, shelly-1.5.1, shelly-1.5.0.1,
shelly-1.4.4.2, shelly-1.4.4.1, shelly-1.4.4, shelly-1.4.3.1, shelly-1.4.3,
shelly-1.4.2, shelly-1.4.1, shelly-1.4.0.2, shelly-1.4.0.1, shelly-1.3.2,
shelly-1.3.1, shelly-1.3.0.7, shelly-1.3.0.6, shelly-1.3.0.5, shelly-1.3.0.4,
shelly-1.3.0.3, shelly-1.3.0.2, shelly-1.3.0.1, shelly-1.3.0.0,
shelly-1.2.0.0, shelly-1.1.0.0, shelly-1.0.0.0, shelly-0.15.4.1,
shelly-0.15.4, shelly-0.15.3.3, shelly-0.15.3.2, shelly-0.15.3.1,
shelly-0.15.3, shelly-0.15.2, shelly-0.15.1, shelly-0.15.0, shelly-0.14.3,
shelly-0.14.2.3, shelly-0.14.2.2, shelly-0.14.2.1, shelly-0.14.2,
shelly-0.14.1, shelly-0.14.0.1 (constraint from user target requires ==0.14)
trying: shelly-0.14
next goal: base (dependency of shelly-0.14)
rejecting: base-4.9.0.0/installed-4.9... (conflict: shelly => base<0)
rejecting: base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0,
base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0,
base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0,
base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0,
base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable
package requires installed instance)
Dependency tree exhaustively searched.