Resolving dependencies...
Configuring old-locale-1.0.0.7...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Building old-locale-1.0.0.7...
Configuring random-1.1...
Installed old-locale-1.0.0.7
Building random-1.1...
Configuring old-time-1.1.0.3...
Installed mtl-2.2.1
Installed random-1.1
Building old-time-1.1.0.3...
Installed old-time-1.1.0.3
Configuring QIO-1.1...
Building QIO-1.1...
Failed to install QIO-1.1
Build log ( /home/builder/.cabal/logs/QIO-1.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-8032/QIO-1.1'
Configuring QIO-1.1...
Building QIO-1.1...
Preprocessing library QIO-1.1...
[ 1 of 12] Compiling QIO.Vec          ( QIO/Vec.hs, dist/build/QIO/Vec.o )

QIO/Vec.hs:30:10: error:
    • Could not deduce (Applicative (Vec n))
        arising from the superclasses of an instance declaration
      from the context: Num n
        bound by the instance declaration at QIO/Vec.hs:30:10-31
    • In the instance declaration for ‘Monad (Vec n)’
cabal: Leaving directory '/tmp/cabal-tmp-8032/QIO-1.1'
cabal: Error: some packages failed to install:
QIO-1.1 failed during the building phase. The exception was:
ExitFailure 1