GNU bug report logs - #21767
Matching debug symbol and package versions

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From: Efraim Flashner <efraim <at> flashner.co.il>
To: ludo <at> gnu.org (Ludovic Courtès)
Cc: 21767 <at> debbugs.gnu.org, Benno Evers <benno <at> bmevers.de>
Subject: bug#21767: Matching debug symbol and package versions
Date: Tue, 27 Oct 2015 18:40:54 +0200

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On Tue, 27 Oct 2015 16:56:23 +0100
ludo <at> gnu.org (Ludovic Courtès) wrote:

> Benno Evers <benno <at> bmevers.de> skribis:
> 
> > assume I have installed some package
> >
> >     /gnu/store/xxx-daemon-1.0
> >
> > After a while I notice that it's inexplicably hanging, so I do 'guix
> > package -i daemon-1.0:debug', attach to the daemon with gdb, and...no
> > debug symbols can be loaded! Turns out, in the meantime the hash has
> > changed so i installed
> >
> >     /gnu/store/yyy-daemon-1.0:debug  
> 
> One thing that could be done, maybe, is for ‘guix package -i’ to try to
> infer the right item to install.
> 
> That is, when running “guix package -i foo:bar”:
> 
>   1. If no ‘foo’ is present in the profile, install the latest
>      ‘foo:bar’, as is already the case.
> 
>   2. If another output of ‘foo’ is already installed, do:
> 
>      2a. Retrieve the .drv for that item using ‘query-path-info’.
> 
>          i. If the .drv is present, parse it, and use the outputs
>             specified therein–i.e., the one that match.
> 
>          ii. If the .drv is missing, well, install the latest ‘foo:bar’.
> 
> The obvious problem is that this all sounds a bit complex, and it’s
> unclear whether case (i) would sufficiently frequent to justify this
> complexity.
> 
> Thoughts?

Less complex would be `guix package -i foo:bar` to effectively be `guix
package -i foo foo:bar`. But then if you really only wanted foo:bar you'd
have to follow up with `guix package -r foo`.
-- 
Efraim Flashner   <efraim <at> flashner.co.il>   אפרים פלשנר
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