Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hopenpgp-tools (user goal)
rejecting: hopenpgp-tools-0.19.4, hopenpgp-tools-0.19.3,
hopenpgp-tools-0.19.2, hopenpgp-tools-0.19.1, hopenpgp-tools-0.19,
hopenpgp-tools-0.18, hopenpgp-tools-0.17.1, hopenpgp-tools-0.17,
hopenpgp-tools-0.16.3, hopenpgp-tools-0.16.2, hopenpgp-tools-0.16.1,
hopenpgp-tools-0.16, hopenpgp-tools-0.15.1, hopenpgp-tools-0.15,
hopenpgp-tools-0.14.1, hopenpgp-tools-0.14, hopenpgp-tools-0.13,
hopenpgp-tools-0.12, hopenpgp-tools-0.11, hopenpgp-tools-0.10,
hopenpgp-tools-0.9.1, hopenpgp-tools-0.9, hopenpgp-tools-0.8.2,
hopenpgp-tools-0.8.1, hopenpgp-tools-0.8, hopenpgp-tools-0.7.2 (constraint
from user target requires ==0.7.1)
trying: hopenpgp-tools-0.7.1
trying: base-4.9.0.0/installed-4.9... (dependency of hopenpgp-tools-0.7.1)
next goal: fgl (dependency of hopenpgp-tools-0.7.1)
rejecting: fgl-5.5.3.0, fgl-5.5.2.3, fgl-5.5.2.2, fgl-5.5.2.1, fgl-5.5.2.0,
fgl-5.5.1.0, fgl-5.5.0.1, fgl-5.5.0.0 (conflict: hopenpgp-tools => fgl<5.5)
rejecting: fgl-5.4.2.4 (conflict: base==4.9.0.0/installed-4.9..., fgl =>
base<4.8)
rejecting: fgl-5.4.2.3, fgl-5.4.2.2 (conflict: base==4.9.0.0/installed-4.9...,
fgl => base<4.4)
rejecting: fgl-5.4.2.0, fgl-5.4.1.1 (conflict: base==4.9.0.0/installed-4.9...,
fgl => base<4.8)
rejecting: fgl-5.3 (conflict: base==4.9.0.0/installed-4.9..., fgl => base<3)
Dependency tree exhaustively searched.