[Haskell-cafe] 'cabal install lhs2tex' fails for me on os x -- help please

[Don Stewart]

conal:
> Fails during configuration:
> 
> bash-3.2$ cabal install lhs2tex
>     Resolving dependencies...
>     [1 of 1] Compiling Main             ( /tmp/lhs2tex-1.1423397/lhs2tex-1.14/
> Setup.hs, /tmp/lhs2tex-1.1423397/lhs2tex-1.14/dist/setup/Main.o )
>     Linking /tmp/lhs2tex-1.1423397/lhs2tex-1.14/dist/setup/setup ...
>     Configuring lhs2tex-1.14...
>     cabal: Error: some packages failed to install:
>     lhs2tex-1.14 failed during the configure step. The exception was:
>     exit: ExitFailure 11
> 
> Note that the the first module to be compiled is Main.  On my linux machine,
> Main is the *last* of several modules to be compiled.
> 
> Here's my failure log: http://moonpatio.com/fastcgi/hpaste.fcgi/view?id=3096#
> a3096 .
> 
> If instead I use ./configure and make, i get errors due to use of the old
> Exception API:
> 
>     ...
>     [17 of 19] Compiling FileNameUtils    ( FileNameUtils.lhs, FileNameUtils.o
> )
> 
>     FileNameUtils.lhs:81:35:
>         Ambiguous type variable `b' in the constraint:
>           `GHC.Exception.Exception b'
>             arising from a use of `catch' at FileNameUtils.lhs:(81,35)-(89,60)
>         Probable fix: add a type signature that fixes these type variable(s)
>     ...
> 
> Suggestions greatly appreciated!

Via cabal:

    --constraint='base<4'

or replace Control.Exception with Control.OldException

or add 'base < 4'  to the depends in the .cabal file.

-- Don