Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: haskell-src-meta (user goal)
rejecting: haskell-src-meta-0.7.0, haskell-src-meta-0.6.0.14,
haskell-src-meta-0.6.0.13, haskell-src-meta-0.6.0.12,
haskell-src-meta-0.6.0.11, haskell-src-meta-0.6.0.10,
haskell-src-meta-0.6.0.9, haskell-src-meta-0.6.0.8, haskell-src-meta-0.6.0.7
(constraint from user target requires ==0.6.0.6)
trying: haskell-src-meta-0.6.0.6
next goal: base (dependency of haskell-src-meta-0.6.0.6)
rejecting: base-4.9.0.0/installed-4.9... (conflict: haskell-src-meta =>
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.