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From: "Hedayat
Vatankhah" <hedayat.fwd@xxxxxxxxx>
To: "Development discussions related to Fedora"
<devel@xxxxxxxxxxxxxxxxxxxxxxx>
Sent: Saturday, January 3, 2015 9:42:01 PM
Subject: Yet another frustration with Fedora package
management
Hi!
Summary: Try to prevent a package from being updated/installed
from repositories regardless of the package management tool
you use. As it seems, then only way you can do this is to
exclude it from the repositories themselves inside their
configuration file in /etc/yum.repos.d/, because these are the
only common settings between all three (yum/dnf/PackageKit).
TBH, I'm not sure about PackageKit, but I feel that it don't
read /etc/dnf/dnf.conf as it doesn't use DNF but its backends.
This is fine if the package is in a single known repository,
but what if it is in 3 repositories that you might not be
aware of all of them?
More details:
As you might already know, nvidia drivers in RPMFusion F21
repositories doesn't work for all nvidia cards. In one system,
I finally installed akmod-nvidia from RPMFusion F20
repositories which worked fine. Soon after I realized that I
should exclude akmod-nvidia and dependencies from F21
repositories. I added "exclude=*nvidia*" to /etc/yum.conf as I
was lazy to check which repository these packages come from.
But then I noticed that dnf doesn't consider it excluded. Then
I thought that probably PackageKit doesn't use dnf.conf too.
So, how should I excluded these packages? Well, these were in
rpmfusion-nonfree-updates repository, so I added the exclude
directive there. Then I found that I should add it to
rpmfusion-nonfree repository too. However, since I use
yum-plugin-local I also have a local repository (I actually
copied the repository from another system, so it was enabled
on this system so that I could install software from it) which
also included these packages. Therefore, I should exclude
"*nvidia*" in 3 repository configuration files to make sure
(hopefully!) that these will not be installed by any package
manager I know.
Suggestion: Please add a single configuration file to
configure common package manager options (Specially between
DNF and PackageKit, which are there to stay). As I mentioned
in "F21 downloads repository metadata in 3 places!" thread,
Fedora package management should be consistent and integrated;
and the current situation is really frustrating. If I want to
exclude some packages, I should be able to do it once for all.
If I want to disable automatic download of metadata/packages,
there should be a single place where I can define my desired
package management policy. If I want to specify default
metadata_expire timeout for all repositories, there should be
one place to do it. There really should be a single package
management policy that must be respected by every package
manager in Fedora, specially the main ones: DNF and PackageKit
(and currently Yum).
Hi, I understand the frustration. On the other hand, I
personally hate anything that is centralized. Just an idea:
what about a simple modular tool (maybe installed by default)
which would be able to set options like this at all the
places? Potentially it could be able to synchronize a subset
of settings between given programs.
While I prefer the centralized approach (and also consider your
approach still a centralized one), but whatever works is fine with
me.
--
Radek Holý
Associate Software Engineer
Software Management Team
Red Hat Czech
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