Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: linux-ptrace (user goal)
rejecting: linux-ptrace-0.1.2, linux-ptrace-0.1.1 (constraint from user target
requires ==0.1)
trying: linux-ptrace-0.1
trying: process-1.4.2.0/installed-1.4... (dependency of linux-ptrace-0.1)
next goal: bytestring (dependency of linux-ptrace-0.1)
rejecting: bytestring-0.10.8.1/installed-0.1..., bytestring-0.10.8.1,
bytestring-0.10.8.0, bytestring-0.10.6.0, bytestring-0.10.4.1,
bytestring-0.10.4.0, bytestring-0.10.2.0, bytestring-0.10.0.2,
bytestring-0.10.0.1, bytestring-0.10.0.0 (conflict: linux-ptrace =>
bytestring==0.9.*)
trying: bytestring-0.9.2.1
next goal: unix (dependency of linux-ptrace-0.1)
rejecting: unix-2.7.2.0/installed-2.7... (conflict: bytestring==0.9.2.1, unix
=> bytestring==0.10.8.1/installed-0.1...)
rejecting: unix-2.7.2.1, unix-2.7.2.0, unix-2.7.1.0, unix-2.7.0.1,
unix-2.7.0.0, unix-2.6.0.1, unix-2.6.0.0, unix-2.5.1.1, unix-2.5.1.0,
unix-2.5.0.0, unix-2.4.2.0, unix-2.4.1.0, unix-2.4.0.2, unix-2.4.0.1,
unix-2.4.0.0, unix-2.3.2.0, unix-2.3.1.0, unix-2.3.0.0, unix-2.2.0.0, unix-2.0
(conflict: process => unix==2.7.2.0/installed-2.7...)
Dependency tree exhaustively searched.