On Dec 2, 2007, at 03:03, Harald Hanche-Olsen wrote:
Hmm, I didn't know a .pkg could be a single file. It seems they
always come as a bundle wrapped in a .dmg instead, which makes it
easier to look inside if one is so inclined. Any specific reason you
went for this solution? Is it easier to build that way?
Yeah, I noticed that too. I didn't choose it this way, it's just how it
happened. I first put it in a dmg, but then noticed that it was just a
file and not a dir. I set Leopard as the minimum requirement, so maybe
Leopard's installer has support for single file packages (maybe bzipped
tarballs with some meta-data... but I dunno).
These new one-file pkgs are xar archives. The Leopard system DVD uses
them, too. To list their contents:
xar -tf X11-2.1.0.pkg
To extract into the current directory:
xar -xf X11-2.1.0.pkg
After this, you have a structure like inside a traditional *.pkg bundle.
The files "Payload" and "Scripts" are gzipped pax archives, like the
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