Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: dropsolve (user goal)
rejecting: dropsolve-0.1.2.1, dropsolve-0.1.2, dropsolve-0.1.1 (constraint
from user target requires ==0.1)
trying: dropsolve-0.1
trying: base-4.9.0.0/installed-4.9... (dependency of dropsolve-0.1)
next goal: haskell98 (dependency of dropsolve-0.1)
rejecting: haskell98-2.0.0.3, haskell98-2.0.0.2, haskell98-2.0.0.1,
haskell98-2.0.0.0 (conflict: dropsolve => haskell98>=1.1 && <1.2)
rejecting: haskell98-1.1.0.1, haskell98-1.1.0.0 (conflict:
base==4.9.0.0/installed-4.9..., haskell98 => base>=3 && <4.6)
rejecting: haskell98-1.0.1.1, haskell98-1.0.1.0, haskell98-1.0 (conflict:
dropsolve => haskell98>=1.1 && <1.2)
Dependency tree exhaustively searched.