*** setup configure

Reading installed packages...
/usr/local/bin/ghc-pkg dump --global
/usr/local/bin/ghc-pkg dump --user
Dependency Cabal >=1.2: using Cabal-1.6.0.3
Creating setup (and its parents)
/usr/local/bin/ghc -package Cabal-1.6.0.3 --make Setup.hs -o setup/setup -odir setup -hidir setup
[1 of 1] Compiling Main             ( Setup.hs, setup/Main.o )

Setup.hs:20:2:
    Ambiguous type variable `e' in the constraint:
      `Ex.Exception e'
        arising from a use of `Ex.catch' at Setup.hs:(20,2)-(21,27)
    Probable fix: add a type signature that fixes these type variable(s)

Setup.hs:25:2:
    Ambiguous type variable `e1' in the constraint:
      `Ex.Exception e1'
        arising from a use of `Ex.catch' at Setup.hs:(25,2)-(26,27)
    Probable fix: add a type signature that fixes these type variable(s)

*** Trying again with preferred-versions

*** setup configure

Reading installed packages...
/usr/local/bin/ghc-pkg dump --global
/usr/local/bin/ghc-pkg dump --user
Dependency Cabal >=1.2: using Cabal-1.6.0.3
Creating setup (and its parents)
/usr/local/bin/ghc -package Cabal-1.6.0.3 --make Setup.hs -o setup/setup -odir setup -hidir setup
[1 of 1] Compiling Main             ( Setup.hs, setup/Main.o )

Setup.hs:20:2:
    Ambiguous type variable `e' in the constraint:
      `Ex.Exception e'
        arising from a use of `Ex.catch' at Setup.hs:(20,2)-(21,27)
    Probable fix: add a type signature that fixes these type variable(s)

Setup.hs:25:2:
    Ambiguous type variable `e1' in the constraint:
      `Ex.Exception e1'
        arising from a use of `Ex.catch' at Setup.hs:(25,2)-(26,27)
    Probable fix: add a type signature that fixes these type variable(s)