Resolving dependencies...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Installed mtl-2.2.1
Configuring sessions-2008.5.2...
Building sessions-2008.5.2...
Failed to install sessions-2008.5.2
Build log ( /home/builder/.cabal/logs/sessions-2008.5.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-4449/sessions-2008.5.2'
Configuring sessions-2008.5.2...
Building sessions-2008.5.2...
Preprocessing library sessions-2008.5.2...

Control/Concurrent/Session/Runtime.hs:10:14: warning:
    -XPatternSignatures is deprecated: use -XScopedTypeVariables or pragma {-# LANGUAGE ScopedTypeVariables #-} instead

Control/Concurrent/Session/SessionType.hs:7:14: warning:
    -XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS

Control/Concurrent/Session/List.hs:7:14: warning:
    -XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS

Control/Concurrent/Session/Number.hs:5:14: warning:
    -XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS

Control/Concurrent/Session/Map.hs:6:14: warning:
    -XPatternSignatures is deprecated: use -XScopedTypeVariables or pragma {-# LANGUAGE ScopedTypeVariables #-} instead

Control/Concurrent/Session/Interleaving.hs:3:14: warning:
    -XPatternSignatures is deprecated: use -XScopedTypeVariables or pragma {-# LANGUAGE ScopedTypeVariables #-} instead

Control/Concurrent/Session/Pid.hs:4:14: warning:
    -XPatternSignatures is deprecated: use -XScopedTypeVariables or pragma {-# LANGUAGE ScopedTypeVariables #-} instead
[ 1 of 10] Compiling Control.Concurrent.Session.SMonad ( Control/Concurrent/Session/SMonad.hs, dist/build/Control/Concurrent/Session/SMonad.o )

Control/Concurrent/Session/SMonad.hs:52:10: error:
    • Could not deduce (Applicative (SChain m x x))
        arising from the superclasses of an instance declaration
      from the context: Monad m
        bound by the instance declaration
        at Control/Concurrent/Session/SMonad.hs:52:10-42
    • In the instance declaration for ‘Monad (SChain m x x)’
cabal: Leaving directory '/tmp/cabal-tmp-4449/sessions-2008.5.2'
cabal: Error: some packages failed to install:
sessions-2008.5.2 failed during the building phase. The exception was:
ExitFailure 1