Subject: Re: When DEPENDS can be upgraded in place
To: Frederick Bruckman <email@example.com>
From: Hubert Feyrer <firstname.lastname@example.org>
Date: 09/05/2000 01:11:19
On Mon, 4 Sep 2000, Frederick Bruckman wrote:
> > Currently updating a package involves deletion and
> > re-compilation/installation of all the packages that depended on
> > it. For many packages this is quite correct (anything depending
> > on another package to link against its includes), but for
> > others it is completely unnecessary (packages depending on
> > other packages containing only executables and manpages).
> I've thought about that. We have two problems. We're building and
> installing packages in the DEPENDS list that aren't really necessary
> for building and installing the package at all. Another is that the
> package no longer contains the information of exactly which packages
> it was built against. Even if you track down the RCS ID's in the
> +BUILD_INFO file, you can not know what was installed on the build
You're jumping from a observation to proposal of a solution without saying
first what you want to solve/fix. Please explain.
As to your observation of a pkg "needs to know which pkg we built against
exactly": why do you need this? The pkg will probably still be there even
if you use "pkg_delete -r". Don't mix up pkg_delete's -r and -R
switch. -r goes +REQUIRED_BY, -R goes @pkgdep.
> xpm-* xpm-3.4k wmx-5.0,knews-1.01b1,xpdf-0.91
> png>=1.06 png-1.08 knews-1.01b1
> png-* png-1.08 foo-1.01
> Such a database would evidently be very easy to construct on initial
> installation of a package. To build a new binary package, you first do
> a "pkg_delete -r". This searches the second column, and deletes all
> the packages in the third field for entries that match.
This last sentence sounds like a lame workaround that 'd expect from
someone who doesn't know how to expand wildcards properly. See pkg_delete
sources on how to do that.
Other than that, I don't see much win from this over the +REQUIRED_BY
file. What did I miss?
Another problem you'll face there is that different patterns will expand
to the same pkg, e.g. png-1.* and png>=1.05 can both expand to
Hubert Feyrer <email@example.com>