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From: Stephen Montgomery-Smith <stephen@missouri.edu>
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To: Dieter BSD <dieterbsd@engineer.com>
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Cc: "freebsd@sopwith.solgatos.com" <freebsd@sopwith.solgatos.com>,
	"freebsd@fokker.solgatos.com" <freebsd@fokker.solgatos.com>,
	FreeBSD Ports <freebsd-ports@freebsd.org>,
	"bug-followup@freebsd.org" <bug-followup@freebsd.org>
Subject: Re: ports/158179: some packages do not fully honor -P dir option
 in pkg_add(1)
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On 07/19/2011 01:41 PM, Dieter BSD wrote:
>> 1.  Spell out very clearly its purpose - is it to populate a jail, for
>> example?
>
> Populating a chroot/jail is one purpose.
>
> Another is to test a new version of a package without messing up the
> existing version.

I don't see how these two goals are compatible.  Any programs installed 
for the purpose of a chroot/jail will have to point to $PREFIX, whereas 
any programs installed for the purpose of testing it elsewhere will 
either have to point to $PREFIX (if the stuff it is pointing to was not 
installed by the current package and the "-p" option was invoked), or to 
$PKG_PREFIX (if the stuff it is pointing to was installed by the current 
package or the "-P" option was invoked).