From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark H Weaver <mhw@netris.org>
Subject: Re: Ever-growing store with --gc-keep-outputs?
Date: Fri, 14 Sep 2018 17:34:34 -0400
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In-Reply-To: <87tvms555s.fsf@ambrevar.xyz> (Pierre Neidhardt's message of
	"Fri, 14 Sep 2018 20:02:07 +0200")
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To: Pierre Neidhardt <mail@ambrevar.xyz>
Cc: Guix-Help <help-guix@gnu.org>

Pierre Neidhardt <mail@ambrevar.xyz> writes:

>> it works well in my preferred mode of operation where I
>> build everything locally and never use substitutes.
>
> Do substitutes change the way GC behaves?  I use substitutes.

No.  However, if you build everything locally, it becomes more important
to avoid deleting store items that will be needed to build your next
system update, and so the --gc-keep-* flags become important.

>> (1) update my user profiles and delete old generations
>> (2) delete older generations in /var/guix/profiles (but always
>>     keeping the one referenced by /run/booted-system!)
>
> You mean system generations?  I did that.

Right.

>> (3) reconfigure the system to remove the old system profiles from
>>     grub.cfg
>> (4) guix gc
>
> I did all this.  Then ghc-pandoc and all the ghc dependencies did not go.

What is the output of "guix gc --referrers /gnu/store/xxxxx.drv" when
applied to the .drv file for ghc-pandoc?

      Mark