Le 25 févr. 2006 à 17:23, David R. Morrison a écrit :
On Feb 25, 2006, at 8:14 AM, Dave Vasilevsky wrote:
On Feb 25, 2006, at 9:48 AM, David R. Morrison wrote:
However, there are some pairs of packages (dclib0 and valknut
come to mind) which have been set up so that one depends on a
precise version of another. It seems to me that these would be
completely impossible to update with the strict checking you are
discussing, right?
There are actually two solutions for tightly-bound packages like
this.
1. If we tell dpkg to install both of them at the same time (dpkg -
i foo.deb bar.deb), then everything's great. Fink usually does
this if they're "relatives", such as a parent and its splitoff, or
two splitoffs of the same parent.
2. Even if we don't tell dpkg to install both at once, the
SysState algorithm will figure things out in the simple cases,
when upgrading the depender fixes things. For example, say you
have foo-shlibs-1.0-1 and foo-dev-1.0-1 installed with the usual
Depends: foo-shlibs (= 1.0-1). If you try to install foo-
shlibs-2.0-1, SysState will figure out that foo-dev needs to be
upgraded as well.
Right. In both of your examples, the packages are splitoffs of the
same parent, and its clear how to make SysState handle such a
situation.
However, in the case of the gettext upgrade (which also involved
the package libgettext3-shlibs), and the valknut/dclib0 example,
the packages in question aren't splitoffs of the same parent.
Could we think of a mechanism to notify SysState that these
packages should be considered 'as a unit'?
Just in case this could be another aspect of the problem:
There are also the case of indenpendant plugins of a package (not
splitoffs), which in some cases depends on main >= xx, build-depends
on main-dev >= xx; but when headers have a major changes in the main
package (not parent in the sense of fink), then it should not accept
old versions of the plugins with newer version of the main package.
Normally, it should be handled correctly, but if the user - for a
given reason (say a package does not exist in stable) - switches
temporarily to unstable, it may happen that inconsistencies appear,
with the >= system.
Amicalement,
Michèle
<http://micmacfr.homeunix.org>
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