Resolving dependencies... cabal: Could not resolve dependencies: next goal: template (user goal) rejecting: template-0.2.0.10, template-0.2.0.9, template-0.2.0.8, template-0.2.0.7, template-0.2.0.6, template-0.2.0.5, template-0.2.0.4, template-0.2.0.3 (constraint from user target requires ==0.2.0.2) trying: template-0.2.0.2 next goal: base (dependency of template-0.2.0.2) rejecting: base-4.9.0.0/installed-4.9... (conflict: template => base>=3.0 && <4.4) 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.