Re: [gentoo-user] lm_sensors: dependency problem...

[Mike Edenfield <kutulu@kutulu.org>]

On 8/23/2009 8:45 AM, Jarry wrote:
> Albert Hopkins wrote:
>> On Sun, 2009-08-23 at 09:42 +0200, Jarry wrote:
>>> ____________________________
>>>
>>> # emerge --pretend lm_sensors
>>> These are the packages that would be merged, in order:
>>> Calculating dependencies... done!
>>> [ebuild N ] sys-fs/sysfsutils-2.1.0
>>> [ebuild N ] x11-misc/read-edid-1.4.2
>>> [ebuild N ] sys-apps/lm_sensors-2.10.7 USE="-sensord"
>>> ____________________________
>>>
>>> What is that x11-misc/read-edid good for? I do not want to pull
>>> the whole x11 stuff with it, as this is a server with no graphics.

> I agree with the original poster of this "resolved" bug:
> pulling in x11-stuff to server just to be able to monitor
> its temperatures is simply dangerous and risky...

read-edid is only tangentially related to X.  It doesn't use 
any X libraries, or even require X to be installed to run. 
It perhaps shouldn't even be in the x11-misc category, but 
that's entirely cosmetic.

Also, I noted that lm_sensors-3.0 doesn't have this 
dependency anymore, so it looks like it was handled upstream.

>>> Next, I want to use sensord for monitoring, so I modified
>>> package.use and tried it once more:
>>> ____________________________
>>>
>>> # echo "sys-apps/lm_sensors sensord" >> /etc/portage/package.use
>>> # emerge --pretend lm_sensors
>>> These are the packages that would be merged, in order:
>>> Calculating dependencies... done!
>>>
>>> emerge: there are no ebuilds built with USE flags to satisfy
>>> ">=x11-libs/cairo-1.4.6[svg]".
>>> !!! One of the following packages is required to complete your request:
>>> - x11-libs/cairo-1.8.6-r1 (Change USE: +svg)
>>> (dependency required by "net-analyzer/rrdtool-1.3.8" [ebuild])
>>> (dependency required by "sys-apps/lm_sensors-2.10.7" [ebuild])
>>> (dependency required by "lm_sensors" [argument])
>>> ____________________________
>>>
>>> Now I do not understand it at all. Why rrdtool? All I want
>>> to use sensord for is to have some status messages recorded
>>> to syslog. Why should I install that x11-libs/cairo graphics
>>> library and rrdtool stuff???
>>
>> Likely sensord does a lot more than recording to syslog.
>
> man sensord:
>
> DESCRIPTION
> Sensord is a daemon that can be used to periodically log
> sensor readings from hardware health-monitoring chips to
> syslog(3) ***OR*** a round-robin database (RRD) and to alert
> when a sensor alarm is signalled; for example, if a fan fails,
> a temperature limit is exceeded, etc.
>
> You see that big fat ***OR*** there? syslog or RRD. And I think
> even gentoo-user should have the right to choose what he wants
> to do with those sensor-readings. Definitelly I'm against any
> x11-libs on my server, be it x11-misc/read-edid or x11-libs/cairo.
>
> BTW, sensord can write data to round-robin database even if no
> rrd-tool is installed. There's no need to put net-analyzer/rrdtool
> as a dependency...

Tell that to the upstream:

make: *** No rule to make target `rrd.h', needed by 
`prog/sensord/rrd.rd'.  Stop.

--Mike