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Autor: Florian Zieboll
Data:  
Para: Antonio Trkdz.tab
CC: [DNG]
Assunto: Re: [DNG] Advice on a package pinning
On Wed, 17 Mar 2021 16:18:03 +0100
"Antonio Trkdz.tab" <antoniotrkdz@???> wrote:

> Thank you Florian for your good advice on pinning strategy.
> What I am really scared of is if having installed different gcc
> packages could screw up my system.
> Does your strategy take into account this, i.e. is your suggestion a
> way to take care of such situations?
> did you have any such problems deriving from 'aggressively' mixing up
> releases?



Hallo Antonio,

I am not into mixing 'aggressively' and usually don't have more than a
handful of packages (plus dependencies) from at most three "alien"
repositories - and it's really long ago that I messed up a system in a
way that was irrecoverably (for me).

That said: I suppose, that if you don't go beyond "testing", the
packages' dependencies won't change in a way that would endanger your
system by just updating - of course given that you took care during the
initial installation of the "non native" packages.

But please take my words with a good pinch of salt; on this list there
are much more experienced sysadmins than I am, who might have the one or
other cent to add to these my two lentejas! (Not sure if silence has to
mean consent - it might be a mail filter towards /dev/null as well;-)

NB, as it took me a while to figure out how to do it: With aptitude, you
can easily filter installed packages by archive name or origin (URL):

    $ aptitude search "?narrow(~i, ~A$archive)"
or
    $ aptitude search "?narrow(~i, ~O$origin)"


Of course, $archive and $origin need to be replaced or defined. Also, if
you don't know it already, I recommend to have a look at the aptitude
search term reference, it can be *VERY* useful:
https://www.debian.org/doc/manuals/aptitude/ch02s04s05.en.html


libre Grüße,
Florian