Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: warp-static (user goal)
rejecting: warp-static-2.0.1.1, 2.0.1, 2.0.0.1, 2.0.0, 1.3.0.1, 1.3.0,
1.2.0.2, 1.2.0.1, 1.2.0 (global constraint requires ==1.1.0.1)
trying: warp-static-1.1.0.1
next goal: bytestring (dependency of warp-static-1.1.0.1)
rejecting: bytestring-0.10.4.0/installed-9f4..., 0.10.6.0, 0.10.4.1, 0.10.4.0,
0.10.2.0, 0.10.0.2, 0.10.0.1, 0.10.0.0 (conflict: warp-static =>
bytestring>=0.9.1.4 && <0.10)
trying: bytestring-0.9.2.1
trying: directory-1.2.1.0/installed-4c4... (dependency of warp-static-1.1.0.1)
next goal: unix (dependency of directory-1.2.1.0/installed-4c4...)
rejecting: unix-2.7.0.1/installed-0d8... (conflict: bytestring==0.9.2.1, unix
=> bytestring==0.10.4.0/installed-9f4...)
rejecting: unix-2.7.1.0, 2.7.0.1, 2.7.0.0, 2.6.0.1, 2.6.0.0, 2.5.1.1, 2.5.1.0,
2.5.0.0, 2.4.2.0, 2.4.1.0, 2.4.0.2, 2.4.0.1, 2.4.0.0, 2.3.2.0, 2.3.1.0,
2.3.0.0, 2.2.0.0, 2.0 (conflict: directory => unix==2.7.0.1/installed-0d8...)
Dependency tree exhaustively searched.