modules of cabal-install

[Christian Maeder]

Hi,

I would like to reuse the module Distribution.Client.Tar
from the cabal-install package.

Are you willing to split up your package? Is it worth to have single
module packages?

Currently, Distribution.Client.Tar depends on
Distribution.Client.Utils.writeFileAtomic, but this final call could be
left to the user. Maybe writeFileAtomic should be in another package, too?

Trying to avoid copying source code,
Christian