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Re: Find installed library version of GNU Guix commit x

From: Zelphir Kaltstahl
Subject: Re: Find installed library version of GNU Guix commit x
Date: Thu, 7 Jan 2021 20:03:53 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

Hi simon!

I'll try to paraphrase my question:

If I run:

guix time-machine \
     --channels="${DIR}/channels.scm" -- \
     environment \

Using the files I wrote about, how would I go about knowing, which
version of guile-json I am really using? What command can I run, that
will list me the versions of packages, which I installed into the
environment, which I am temporarily creating using the above command?

With version, I mean something like "3.5.0".

When I do:

guix install guile-json
The following package will be installed:
   guile-json 4.4.1

I see the version. How can I look up that info in the created environment?


On 1/7/21 1:30 PM, zimoun wrote:
> Hi,
> On Wed, 6 Jan 2021 at 20:52, Zelphir Kaltstahl
> <> wrote:
>> I would like to know a command line way of finding the version of a
>> library, which I install, when I am using time-machine as follows:
> [...]
>> So I already learned today:
>> 1. Revisions seem to be the same thing as commit ids in the version
>> control system. Just a different name for the same thing.
>> 2. Apparently package derivations are "the versions following from a git
>> commit of Guix", but there can be more shown, than I expected.
>> Can you help me Guix noob out?^^
> What are you asking?  Sorry, I am confused and I am not sure to understand.
> About the Data Service, the commit ranges work per "state".  See [1]
> for an example.  Therefore, they are not always accurate.
> 1:
> All the best,
> simon


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