Resolving dependencies...
cabal: Could not resolve dependencies:
trying: base-4.9.0.0/installed-4.9... (dependency of hpaco-0.16.2.0)
next goal: hpaco-lib (dependency of hpaco-0.16.2.0)
rejecting: hpaco-lib-0.28.0.5, hpaco-lib-0.28.0.4, hpaco-lib-0.28.0.3,
hpaco-lib-0.28.0.2, hpaco-lib-0.28.0.1, hpaco-lib-0.28.0.0,
hpaco-lib-0.26.0.0, hpaco-lib-0.25.2.0, hpaco-lib-0.24.1.0,
hpaco-lib-0.24.0.0, hpaco-lib-0.22.4.0, hpaco-lib-0.22.0.0, hpaco-lib-0.18.0.0
(conflict: hpaco => hpaco-lib==0.16.2.0)
trying: hpaco-lib-0.16.2.0
next goal: transformers (dependency of hpaco-lib-0.16.2.0)
rejecting: transformers-0.5.2.0/installed-0.5..., transformers-0.5.2.0,
transformers-0.5.1.0, transformers-0.5.0.1, transformers-0.5.0.0,
transformers-0.4.3.0, transformers-0.4.2.0, transformers-0.4.1.0 (conflict:
hpaco-lib => transformers==0.3.*)
rejecting: transformers-0.3.0.0 (conflict: base==4.9.0.0/installed-4.9...,
transformers => base>=2 && <4.8 || >=1.0 && <2)
rejecting: transformers-0.2.2.1, transformers-0.2.1.0, transformers-0.2.0.0,
transformers-0.1.4.0, transformers-0.1.3.0, transformers-0.1.1.0,
transformers-0.1.0.1, transformers-0.0.1.0, transformers-0.0.0.0,
transformers-0.5.0.2, transformers-0.4.0.0, transformers-0.2.2.0,
transformers-0.1.0.0 (conflict: hpaco-lib => transformers==0.3.*)
Dependency tree exhaustively searched.