[Nix-dev] Making stdenv/setup.sh more verbose

[Michael Raskin]

>I disagree.  What useful information do most of these communicate?  E.g. if a
>mkdir succeeds, why do I have to be informed about it?  It's only interesting if
>it fails.
>
>Rob actually just suggested to make the unpackPhase less verbose, i.e. drop the
>"-v" flag in "tar" and "cp".  But maybe that should be optional.

OK, dropping -v both for tar and mkdir is a good idea. But I always 
thought that -v for tar was deliberate (and mkdir -v is less relative
verbosity than tar -v). mkdir -v is a balance improvement after that.