cabal.exe does not like ghc head's array-0.2.0.0 or containers-0.2.0.0?

[Claus Reinke]

With a freshly built ghc head (on windows, using cygwin bash), using
the cabal.exe binary

    $ /cygdrive/d/archive/haskell/cabal/cabal.exe --version
    cabal-install version 0.6.0
    using version 1.6.0.1 of the Cabal library

I thought I'd make another attempt at bootstrapping cabal-install, but I
get odd dependency resolutions, eg:

    $ /cygdrive/d/archive/haskell/cabal/cabal.exe install cabal-install --dry-run
    Resolving dependencies...
    In order, the following would be installed (use -v for more details):
    array-0.2.0.0
    HTTP-3001.1.5
    containers-0.2.0.0
    Cabal-1.6.0.1
    zlib-0.5.0.0
    cabal-install-0.6.0

Note that both array and containers are already installed:

$ ghc-pkg list
c:/ghc/ghc-6.11.20081202\package.conf:
    Cabal-1.5.5, HUnit-1.2.0.3, QuickCheck-1.2.0.0, Win32-2.2.0.0,
    array-0.2.0.0, base-3.0.3.0, base-4.0.0.0, bytestring-0.9.1.4,
    containers-0.2.0.0, directory-1.0.0.2, ffi-1.0, filepath-1.1.0.1,
    (ghc-6.11.20081202), ghc-paths-0.1.0.5, ghc-prim-0.1.0.0,
    haddock-2.3.0, haskell-src-1.0.1.3, haskell98-1.0.1.0, hpc-0.5.0.2,
    html-1.0.1.2, integer-0.1.0.0, mtl-1.1.0.2, network-2.2.0.1,
    old-locale-1.0.0.1, old-time-1.0.0.1, packedstring-0.1.0.1,
    parallel-1.1.0.0, parsec-2.1.0.1, pretty-1.0.1.0, process-1.0.1.1,
    random-1.0.0.1, regex-base-0.72.0.2, regex-compat-0.71.0.1,
    regex-posix-0.72.0.3, rts-1.0, stm-2.1.1.2, syb-0.1.0.0,
    template-haskell-2.3.0.0, time-1.1.2.2, xhtml-3000.2.0.1

Should I be worried?-)
Claus