*** setup configure

Configuring sessions-2008.2.28...
Dependency base -any: using base-4.1.0.0
Dependency mtl -any: using mtl-1.1.0.2
Using Cabal-1.6.0.1 compiled by ghc-6.8
Using compiler: ghc-6.10.2
Using install prefix: /usr/local/tmp/archive/install
Binaries installed in: /usr/local/tmp/archive/install/bin
Libraries installed in:
/usr/local/tmp/archive/install/lib/sessions-2008.2.28/ghc-6.10.2
Private binaries installed in: /usr/local/tmp/archive/install/libexec
Data files installed in:
/usr/local/tmp/archive/install/share/sessions-2008.2.28
Documentation installed in:
/usr/local/tmp/archive/install/share/doc/sessions-2008.2.28
Using alex version 2.2 found on system at: /usr/bin/alex
Using ar found on system at: /usr/bin/ar
Using c2hs version 0.15.1 found on system at: /usr/local/bin/c2hs
Using cpphs version 0.7 found on system at: /usr/bin/cpphs
Using ffihugs found on system at: /usr/local/bin/ffihugs
Using gcc version 4.3.3 found on system at: /usr/bin/gcc
Using ghc version 6.10.2 found on system at: /usr/local/bin/ghc
Using ghc-pkg version 6.10.2 found on system at: /usr/local/bin/ghc-pkg
No greencard found
Using haddock version 2.4.2 found on system at: /usr/local/bin/haddock
Using happy version 1.17 found on system at: /usr/local/bin/happy
No hmake found
Using hsc2hs version 0.67 found on system at: /usr/local/bin/hsc2hs
Using hscolour version 1.9 found on system at: /usr/local/bin/HsColour
Using hugs found on system at: /usr/local/bin/hugs
No jhc found
Using ld found on system at: /usr/bin/ld
No nhc98 found
Using pkg-config version 0.22 found on system at: /usr/bin/pkg-config
Using ranlib found on system at: /usr/bin/ranlib
Using strip found on system at: /usr/bin/strip
Using tar found on system at: /bin/tar

*** setup build

Creating dist/build (and its parents)
Creating dist/build/autogen (and its parents)
Preprocessing library sessions-2008.2.28...
Building sessions-2008.2.28...
Building library...
Creating dist/build (and its parents)
/usr/local/bin/ghc -package-name sessions-2008.2.28 --make -hide-all-packages -i -idist/build -i. -idist/build/autogen -Idist/build/autogen -Idist/build -optP-include -optPdist/build/autogen/cabal_macros.h -odir dist/build -hidir dist/build -stubdir dist/build -package base-4.1.0.0 -package mtl-1.1.0.2 -O -Wall -fno-warn-name-shadowing Control.Concurrent.Session Control.Concurrent.Session.Runtime Control.Concurrent.Session.SessionType Control.Concurrent.Session.SMonad Control.Concurrent.Session.List Control.Concurrent.Session.Number Control.Concurrent.Session.Map Control.Concurrent.Session.Interleaving

Control/Concurrent/Session/Interleaving.hs:22:79:
    Warning: -XPatternSignatures is deprecated: use -XScopedTypeVariables or pragma {-# LANGUAGE ScopedTypeVariables#-} instead
[1 of 8] Compiling Control.Concurrent.Session.Number ( Control/Concurrent/Session/Number.hs, dist/build/Control/Concurrent/Session/Number.o )
[2 of 8] Compiling Control.Concurrent.Session.List ( Control/Concurrent/Session/List.hs, dist/build/Control/Concurrent/Session/List.o )

Control/Concurrent/Session/List.hs:245:60:
    Could not deduce (Control.Concurrent.Session.Number.Reverse'
                        b' E acc',
                      Control.Concurrent.Session.Number.Reverse' acc E a')
      from the context (Monad m)
      arising from a use of `tySucc'
                   at Control/Concurrent/Session/List.hs:245:60-69
    Possible fix:
      add (Control.Concurrent.Session.Number.Reverse' b' E acc',
           Control.Concurrent.Session.Number.Reverse'
             acc E a') to the context of
        the type signature for `tyListElem''
      or add an instance declaration for
         (Control.Concurrent.Session.Number.Reverse' b' E acc',
          Control.Concurrent.Session.Number.Reverse' acc E a')
    In the second argument of `tyListElem'', namely `(tySucc acc)'
    In the expression: tyListElem' nxt (tySucc acc) val
    In the definition of `tyListElem'':
        tyListElem' (Cons _ nxt) acc val = tyListElem' nxt (tySucc acc) val

*** Trying again with preferred-versions

*** setup configure

Configuring sessions-2008.2.28...
Dependency base -any && <4: using base-3.0.3.1
Dependency mtl -any: using mtl-1.1.0.2
Using Cabal-1.6.0.1 compiled by ghc-6.8
Using compiler: ghc-6.10.2
Using install prefix: /usr/local/tmp/archive/install
Binaries installed in: /usr/local/tmp/archive/install/bin
Libraries installed in:
/usr/local/tmp/archive/install/lib/sessions-2008.2.28/ghc-6.10.2
Private binaries installed in: /usr/local/tmp/archive/install/libexec
Data files installed in:
/usr/local/tmp/archive/install/share/sessions-2008.2.28
Documentation installed in:
/usr/local/tmp/archive/install/share/doc/sessions-2008.2.28
Using alex version 2.2 found on system at: /usr/bin/alex
Using ar found on system at: /usr/bin/ar
Using c2hs version 0.15.1 found on system at: /usr/local/bin/c2hs
Using cpphs version 0.7 found on system at: /usr/bin/cpphs
Using ffihugs found on system at: /usr/local/bin/ffihugs
Using gcc version 4.3.3 found on system at: /usr/bin/gcc
Using ghc version 6.10.2 found on system at: /usr/local/bin/ghc
Using ghc-pkg version 6.10.2 found on system at: /usr/local/bin/ghc-pkg
No greencard found
Using haddock version 2.4.2 found on system at: /usr/local/bin/haddock
Using happy version 1.17 found on system at: /usr/local/bin/happy
No hmake found
Using hsc2hs version 0.67 found on system at: /usr/local/bin/hsc2hs
Using hscolour version 1.9 found on system at: /usr/local/bin/HsColour
Using hugs found on system at: /usr/local/bin/hugs
No jhc found
Using ld found on system at: /usr/bin/ld
No nhc98 found
Using pkg-config version 0.22 found on system at: /usr/bin/pkg-config
Using ranlib found on system at: /usr/bin/ranlib
Using strip found on system at: /usr/bin/strip
Using tar found on system at: /bin/tar

*** setup build

Creating dist/build (and its parents)
Creating dist/build/autogen (and its parents)
Preprocessing library sessions-2008.2.28...
Building sessions-2008.2.28...
Building library...
Creating dist/build (and its parents)
/usr/local/bin/ghc -package-name sessions-2008.2.28 --make -hide-all-packages -i -idist/build -i. -idist/build/autogen -Idist/build/autogen -Idist/build -optP-include -optPdist/build/autogen/cabal_macros.h -odir dist/build -hidir dist/build -stubdir dist/build -package base-3.0.3.1 -package mtl-1.1.0.2 -O -Wall -fno-warn-name-shadowing Control.Concurrent.Session Control.Concurrent.Session.Runtime Control.Concurrent.Session.SessionType Control.Concurrent.Session.SMonad Control.Concurrent.Session.List Control.Concurrent.Session.Number Control.Concurrent.Session.Map Control.Concurrent.Session.Interleaving

Control/Concurrent/Session/Interleaving.hs:22:79:
    Warning: -XPatternSignatures is deprecated: use -XScopedTypeVariables or pragma {-# LANGUAGE ScopedTypeVariables#-} instead
[2 of 8] Compiling Control.Concurrent.Session.List ( Control/Concurrent/Session/List.hs, dist/build/Control/Concurrent/Session/List.o )

Control/Concurrent/Session/List.hs:245:60:
    Could not deduce (Control.Concurrent.Session.Number.Reverse'
                        b' E acc',
                      Control.Concurrent.Session.Number.Reverse' acc E a')
      from the context (Monad m)
      arising from a use of `tySucc'
                   at Control/Concurrent/Session/List.hs:245:60-69
    Possible fix:
      add (Control.Concurrent.Session.Number.Reverse' b' E acc',
           Control.Concurrent.Session.Number.Reverse'
             acc E a') to the context of
        the type signature for `tyListElem''
      or add an instance declaration for
         (Control.Concurrent.Session.Number.Reverse' b' E acc',
          Control.Concurrent.Session.Number.Reverse' acc E a')
    In the second argument of `tyListElem'', namely `(tySucc acc)'
    In the expression: tyListElem' nxt (tySucc acc) val
    In the definition of `tyListElem'':
        tyListElem' (Cons _ nxt) acc val = tyListElem' nxt (tySucc acc) val