Arch Linux

thom_raindog

Member

Registered: 2008-04-29

Posts: 175

[Solved]required or not...?

Good morning,

I just ran an update (pacman -Syu) and got this as info for the last package:

4/4) Aktualisiere lm_sensors                                                                    [#########################################################] 100%
Neue optionale Abhängigkeiten für lm_sensors
    rrdtool: for logging with sensord
==> Packages no longer required by any installed package:
    rrdtool 

Since it's partly german, a brief summary: lm_sensors get's updated and let's me know that there is a new optional package as requirement: rrdtool. Right after that pacman tells me that rrdtool is

no longer required by any installed package

.

I have rrdtools installed indeed, most likely from my existing lm_sensors install. So I wonder: Required or not?

Last edited by thom_raindog (2011-05-06 17:23:30)

ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,362

Re: [Solved]required or not...?

I have rrdtools installed indeed, most likely from my existing lm_sensors install. So I wonder: Required or not?

It says 'for logging with sensord'. Do you use that? If not, you don't need it.

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lolilolicon

Member

Registered: 2009-03-05

Posts: 1,722

Re: [Solved]required or not...?

Optional depends are optional. I think the message is fairly clear:

rrdtool: for logging with sensord

You don't need logging with sensord? Then you don't need rrdtool.

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This silver ladybug at line 28...

tomk

Forum Fellow

From: Ireland

Registered: 2004-07-21

Posts: 9,839

Re: [Solved]required or not...?

Regarding the line about rrdtool no longer being required, this is because rrdtool is now an optional dependency for lm_sensors - it used to be a dependency.

thom_raindog

Member

Registered: 2008-04-29

Posts: 175

Re: [Solved]required or not...?

Regarding the line about rrdtool no longer being required, this is because rrdtool is now an optional dependency for lm_sensors - it used to be a dependency.

Ah, that made it pretty well clear. No offense folks, but yes I can read. I was simply not able to wrap my mind around rrdtools being both a dependancy and not needed anymore. I needed some clarification, which I now got
Thanks very much, tomk.

ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,362

Re: [Solved]required or not...?

Regarding the line about rrdtool no longer being required, this is because rrdtool is now an optional dependency for lm_sensors - it used to be a dependency.

Ah, that made it pretty well clear. No offense folks, but yes I can read. I was simply not able to wrap my mind around rrdtools being both a dependancy and not needed anymore. I needed some clarification, which I now got
Thanks very much, tomk.

Perhaps the translation needs work? Not being able to read it I wouldn't know, of course. If you think there's a better way to put it, please submit a bug report against that.

---

Allan-Volunteer on the (topic being discussed) mailn lists. You never get the people who matters attention on the forums.
jasonwryan-Installing Arch is a measure of your literacy. Maintaining Arch is a measure of your diligence. Contributing to Arch is a measure of your competence.
Griemak-Bleeding edge, not bleeding flat. Edge denotes falls will occur from time to time. Bring your own parachute.

Awebb

Member

Registered: 2010-05-06

Posts: 6,688

Re: [Solved]required or not...?

This is a matter of propositional logic.

A is a new optional dependency.
A is not a dependency anymore.
A is now not a dependency anymore because it is now an optional dependency.

It's like: After the introduction of the steel helmet, the number of head wounds increased. Are steel helmets bad? No, the number of lethal hits decreased at the same time.

thom_raindog

Member

Registered: 2008-04-29

Posts: 175

Re: [Solved]required or not...?

While I am thinking about it: sensord is indeed installed on my system. It is however NOT listed in rc.conf. Why that might be I am not sure. But, seeing that it is installed, why would pacman think that rrdtools is not needed anymore?

ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,362

Re: [Solved]required or not...?

While I am thinking about it: sensord is indeed installed on my system. It is however NOT listed in rc.conf. Why that might be I am not sure. But, seeing that it is installed, why would pacman think that rrdtools is not needed anymore?

pacman doesn't check whether you're actually using anything related, simply whether a particular package is listed as required or not. Optional dependencies aren't absolutely needed for a package functioning, and are simply listed in a PKGBUILD, not searched-for on your system.

---

Allan-Volunteer on the (topic being discussed) mailn lists. You never get the people who matters attention on the forums.
jasonwryan-Installing Arch is a measure of your literacy. Maintaining Arch is a measure of your diligence. Contributing to Arch is a measure of your competence.
Griemak-Bleeding edge, not bleeding flat. Edge denotes falls will occur from time to time. Bring your own parachute.