Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: takahashi (user goal)
rejecting: takahashi-0.2.2.0, 0.2.1.0, 0.2.0.2, 0.2.0.1 (global constraint
requires ==0.2.0.0)
trying: takahashi-0.2.0.0
trying: reasonable-lens-0.2.1.1 (dependency of takahashi-0.2.0.0)
trying: template-haskell-2.10.0.0/installed-90e... (dependency of
reasonable-lens-0.2.1.1)
trying: pretty-1.1.2.0/installed-293... (dependency of
template-haskell-2.10.0.0/installed-90e...)
trying: deepseq-1.4.1.1/installed-8fb... (dependency of
pretty-1.1.2.0/installed-293...)
trying: free-operational-0.5.0.0 (dependency of takahashi-0.2.0.0)
next goal: kan-extensions (dependency of free-operational-0.5.0.0)
rejecting: kan-extensions-4.2.3, 4.2.2, 4.2.1, 4.2, 4.1.1, 4.1.0.1, 4.1,
4.0.3, 4.0.2, 4.0.1, 4.0 (conflict: free-operational => kan-extensions>=3.7 &&
<3.8)
rejecting: kan-extensions-3.7 (conflict: deepseq =>
array==0.5.1.0/installed-d42..., kan-extensions => array>=0.3.0.2 && <0.5)
rejecting: kan-extensions-3.6.2, 3.6, 3.5.1, 3.5, 3.4, 3.1.2, 3.1.1, 3.1.0.2,
3.1.0.1, 3.1, 3.0, 2.7, 2.6, 2.5, 2.4.0.1, 2.4, 2.3, 2.2, 2.1.2, 2.1, 2.0.2,
2.0.1, 2.0.0.3, 2.0.0.2, 2.0.0.1, 2.0.0, 1.9.0, 1.8.0, 0.5.1, 0.5.0, 0.2.2,
0.2.1, 0.2, 0.1.2, 0.1.1, 0.1 (conflict: free-operational =>
kan-extensions>=3.7 && <3.8)
Dependency tree exhaustively searched.