bug#42604: Manual section on building Guix from Git is incomplete

[zimoun]

Hi,

Thanks for the report.

On Wed, 29 Jul 2020 at 15:03, Tirifto <tirifto@posteo.cz> wrote:

> The manual describes how to fetch Guix from Git in section ‘14.1
> Building from Git’, including how to verify the authenticity of the
> copy. Quoting the part in question:
>
>> If you want to hack Guix itself, it is recommended to use the latest
>> version from the Git repository:
>>
>>      git clone https://git.savannah.gnu.org/git/guix.git
>>
>>     How do you ensure that you obtained a genuine copy of the
>> repository? To do that, run ‘guix git authenticate’, passing if the
>> commit and OpenPGP fingerprint of the “channel introduction” (*note
>> Invoking guix git authenticate::):
>>
>>      guix git authenticate 9edb3f66fd807b096b48283debdcddccfea34bad \
>>        "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA"
>>
>> This command completes with exit code zero on success; it prints an
>> error message and exits with a non-zero code otherwise.
>
> I have encountered two problems here:
>
>   1.‘guix git authenticate’ only works after the branch ‘keyring’ has
>      been set up locally; I’ve been told to achieve this with the
>      command ‘git fetch upstream keyring:keyring’, but ‘git checkout
>      keyring’ has worked for me, too. After that, it seems to be
>      necessary to switch back to the master branch to successfully run
>     ‘guix git authenticate’. I think the commands for this should be
>      included in this section.
>
>   2. The word ‘if’ seems to be a typo of ‘it’. I first thought that the
>      sentence was incomplete and that the command should pass if the
>      commit and the fingerprint [did something]. :)
>
> Not sure how the first one would be solved the best.

I think the latest [1] version of the manual fixes the 2 issue.  WDYT?

1: <http://guix.gnu.org/manual/devel/en/guix.html#Building-from-Git>

All the best,
simon