Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: cabal-sort (user goal)
rejecting: cabal-sort-0.0.5.2, 0.0.5.1, 0.0.5 (global constraint requires
==0.0.4.2)
trying: cabal-sort-0.0.4.2
trying: base-4.8.1.0/installed-4f7... (dependency of cabal-sort-0.0.4.2)
next goal: process (dependency of cabal-sort-0.0.4.2)
rejecting: process-1.2.3.0/installed-f02..., 1.4.0.0, 1.3.0.0, 1.2.3.0,
1.2.2.0, 1.2.1.0, 1.2.0.0 (conflict: cabal-sort => process>=1.0 && <1.2)
trying: process-1.1.0.2
next goal: deepseq (dependency of process-1.1.0.2)
rejecting: deepseq-1.4.1.1/installed-8fb..., 1.4.1.2, 1.4.1.1, 1.4.1.0,
1.4.0.0 (conflict: process => deepseq>=1.1 && <1.4)
rejecting: deepseq-1.3.0.2 (conflict: base==4.8.1.0/installed-4f7..., deepseq
=> base>=4.3 && <4.8)
trying: deepseq-1.3.0.1
next goal: array (dependency of deepseq-1.3.0.1)
rejecting: array-0.5.1.0/installed-d42..., 0.5.1.0, 0.5.0.0 (conflict: deepseq
=> array>=0.1 && <0.5)
rejecting: array-0.4.0.1 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=4.2 && <4.7)
rejecting: array-0.4.0.0 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=4.2 && <4.6)
rejecting: array-0.3.0.3 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=4.2 && <4.5)
rejecting: array-0.3.0.2, 0.3.0.1 (conflict: base==4.8.1.0/installed-4f7...,
array => base>=4.2 && <4.4)
rejecting: array-0.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=3 && <4.4)
rejecting: array-0.2.0.0, 0.1.0.0 (conflict: base==4.8.1.0/installed-4f7...,
array => base<4.3)
Dependency tree exhaustively searched.