Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: yesod-examples (user goal)
rejecting: yesod-examples-0.9.0.1, 0.9.0, 0.8.0.3, 0.8.0.2, 0.8.0.1, 0.8.0,
0.7.0.1 (global constraint requires ==0.7.0)
trying: yesod-examples-0.7.0
trying: hamlet-1.2.0 (dependency of yesod-examples-0.7.0)
trying: shakespeare-2.0.5 (dependency of hamlet-1.2.0)
trying: directory-1.2.1.0/installed-4c4... (dependency of shakespeare-2.0.5)
next goal: unix (dependency of directory-1.2.1.0/installed-4c4...)
rejecting: unix-2.7.0.1/installed-0d8... (conflict: unix =>
bytestring==0.10.4.0/installed-9f4..., yesod-examples => bytestring>=0.9 &&
<0.10)
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...)
Backjump limit reached (change with --max-backjumps).