Resolving dependencies...
cabal: Could not resolve dependencies:
trying: solr-0.2.1.5 (user goal)
trying: base-prelude-1 (dependency of solr-0.2.1.5)
next goal: json-encoder (dependency of solr-0.2.1.5)
rejecting: json-encoder-0.1.5 (conflict: base-prelude==1, json-encoder =>
base-prelude>=0.1.21 && <0.2)
rejecting: json-encoder-0.1.3.1 (conflict: solr => json-encoder>=0.1.5 &&
<0.2)
Dependency tree exhaustively searched.