Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: data-lens-template (user goal)
rejecting: data-lens-template-2.2, data-lens-template-2.1.10,
data-lens-template-2.1.9, data-lens-template-2.1.8, data-lens-template-2.1.7,
data-lens-template-2.1.6, data-lens-template-2.1.5, data-lens-template-2.1.4,
data-lens-template-2.1.3, data-lens-template-2.1.2,
data-lens-template-2.1.1.1, data-lens-template-2.1.1 (constraint from user
target requires ==2.1.0)
trying: data-lens-template-2.1.0
trying: base-4.9.0.0/installed-4.9... (dependency of data-lens-template-2.1.0)
next goal: template-haskell (dependency of data-lens-template-2.1.0)
rejecting: template-haskell-2.11.0.0/installed-2.1...,
template-haskell-2.11.0.0, template-haskell-2.10.0.0,
template-haskell-2.9.0.0, template-haskell-2.8.0.0, template-haskell-2.7.0.0,
template-haskell-2.6.0.0 (conflict: data-lens-template =>
template-haskell>=2.4 && <2.6)
rejecting: template-haskell-2.5.0.0 (conflict: base==4.9.0.0/installed-4.9...,
template-haskell => base==4.3.*)
rejecting: template-haskell-2.4.0.1 (conflict: base==4.9.0.0/installed-4.9...,
template-haskell => base==4.2.*)
rejecting: template-haskell-2.4.0.0 (conflict: base==4.9.0.0/installed-4.9...,
template-haskell => base>=3 && <4.3)
rejecting: template-haskell-2.3.0.1, template-haskell-2.3.0.0,
template-haskell-2.2.0.0 (conflict: data-lens-template =>
template-haskell>=2.4 && <2.6)
Dependency tree exhaustively searched.