Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hasktags (user goal)
rejecting: hasktags-0.69.1, 0.69.0, 0.68.7, 0.68.6, 0.68.2, 0.68.1, 0.68,
0.67, 0.68.5, 0.68.4 (global constraint requires ==0.68.3)
trying: hasktags-0.68.3
trying: base-4.8.1.0/installed-4f7... (dependency of hasktags-0.68.3)
next goal: json (dependency of hasktags-0.68.3)
rejecting: json-0.9.1, 0.9, 0.8 (conflict: hasktags => json>=0.5 && <0.8)
trying: json-0.7
trying: json-0.7:+generic
trying: json-0.7:-mapdict
trying: json-0.7:+parsec
trying: json-0.7:+pretty
rejecting: json-0.7:+split-base (conflict: base==4.8.1.0/installed-4f7...,
json-0.7:split-base => base>=4 && <4.8)
rejecting: json-0.7:-split-base (conflict: base==4.8.1.0/installed-4f7...,
json-0.7:split-base => base<3)
Dependency tree exhaustively searched.