[Pkg-haskell-maintainers] Bug#572632: cabal-install: causes 'Warning: Module `Prelude' is deprecated'

[Antti-Juhani Kaijanaho]

Package: cabal-install
Version: 0.8.0-1
Severity: normal

If I configure a package using its own Setup.hs script, everything is fine
(regardless of whether I use Setup.hs or the cabal command for building),
but if I configure a package using the cabal command, I start getting
"Warning: Module `Prelude' is deprecated" warnings.

In the attached project:

ajk at kukkaseppele:~/scratch/foobar$ cabal configure
Resolving dependencies...
Configuring foobar-0.0...
ajk at kukkaseppele:~/scratch/foobar$ cabal build
Preprocessing executables for foobar-0.0...
Building foobar-0.0...
[1 of 1] Compiling Main             ( foobar.hs, dist/build/foobar/foobar-tmp/Main.o )

foobar.hs:1:0:
    Warning: Module `Prelude' is deprecated:
               You are using the old package `base' version 3.x.
               Future GHC versions will not support base version 3.x. You
               should update your code to use the new base version 4.x.

foobar.hs:3:0:
    Warning: Definition but no type signature for `main'
             Inferred type: main :: m ()
Linking dist/build/foobar/foobar ...
ajk at kukkaseppele:~/scratch/foobar$ cabal clean 
cleaning...
ajk at kukkaseppele:~/scratch/foobar$ runghc Setup.hs configure
Configuring foobar-0.0...
ajk at kukkaseppele:~/scratch/foobar$ cabal build
Preprocessing executables for foobar-0.0...
Building foobar-0.0...
[1 of 1] Compiling Main             ( foobar.hs, dist/build/foobar/foobar-tmp/Main.o )

foobar.hs:3:0:
    Warning: Definition but no type signature for `main'
             Inferred type: main :: m ()
Linking dist/build/foobar/foobar ...



-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.33-ibid-1 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=fi_FI.UTF-8, LC_CTYPE=fi_FI.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages cabal-install depends on:
ii  libc6                   2.10.2-6         Embedded GNU C Library: Shared lib
ii  libffi5                 3.0.9-1          Foreign Function Interface library
ii  libgmp3c2               2:4.3.2+dfsg-1   Multiprecision arithmetic library
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

Versions of packages cabal-install recommends:
ii  ghc6                          6.12.1-12  GHC - the Glasgow Haskell Compilat

cabal-install suggests no packages.

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