Resolving dependencies...
Configuring yi-0.6.4.0...
Building yi-0.6.4.0...
Failed to install yi-0.6.4.0
Build log ( /home/builder/.cabal/logs/yi-0.6.4.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-17005/yi-0.6.4.0'
Configuring yi-0.6.4.0...
Building yi-0.6.4.0...
Preprocessing executable 'yi' for yi-0.6.4.0...
<command line>: cannot satisfy -package-id yi-0.6.4.0-7hvwQO9WNiSJmKiy4gB96b
    (use -v for more information)
cabal: Leaving directory '/tmp/cabal-tmp-17005/yi-0.6.4.0'
cabal: Error: some packages failed to install:
yi-0.6.4.0 failed during the building phase. The exception was:
ExitFailure 1