On Thu, 12 Mar 2009 11:43:58 -0700
Donnie Berkholz <dberkholz@gentoo.org> wrote:
> > Currently, if a package does an explicit 'unpack foo.bar',
> > where .bar is an unsupported archive format, unpack just does
> > nothing. This isn't a good default behaviour; if a package really
> > wants something to be ignored silently, it should have to say so.
> 
> I like it when unpack ${A} works regardless of what's in SRC_URI, 
> especially if it's an uncompressed file rather than an unsupported 
> compression format.

You'd have to do unpack --if-compressed ${A} to get that behaviour.
It's sometimes handy to have, and of course it's necessary for
default_src_unpack, but silently ignoring duff inputs isn't very
Unixy or very software engineeringy...

-- 
Ciaran McCreesh