bug#37005: Add ability of modifying connection before full installation

[bo0od <bo0od@riseup.net>]

https://github.com/QubesOS/qubes-issues/issues/5492

Mostly they created qubes without thinking into having this feature.

Julien Lepiller:
> Alt+arrow might work, unless you're already on a tty on qubes? Depending on the VM techno qubes uses, there might also be a way to switch tty within the VM by ussing some control sequence.
> 
> Le 22 décembre 2020 20:18:57 GMT-05:00, bo0od <bo0od@riseup.net> a écrit :
>> You cant switch to another tty in VM of qubes because trying it will
>> switch you to tty of the Qubes itself not the VM within Qubes.
>>
>> Julien Lepiller:
>>> Before starting the installation, you should be able to switch to
>> another tty and configure network from there. Then continue
>> installation from tty1. Does it solve your issues?
>>>
>>> Le 21 décembre 2020 21:56:03 GMT-05:00, bo0od <bo0od@riseup.net> a
>> écrit :
>>>> No, after adding hostname it check for connectivity and after that
>> it
>>>> shows red screen with message "The selected network does not provide
>>>> access to the internet, please try again." and you cant pass that
>>>> message/connectivity check.
>>>>
>>>>
>>>>
>>>> zimoun:
>>>>> Hi,
>>>>>
>>>>> Sorry for the long delay.
>>>>>
>>>>>
>>>>> On Sun, 11 Aug 2019 at 06:31, bo0od <bo0od@riseup.net> wrote:
>>>>>
>>>>>> Im trying to install Guix over Qubes and to do so it needs
>> manually
>>>>>> adding of IP,DNS,Gateway (because its installed over xen
>>>> virtualization)
>>>>>>
>>>>>> But im always facing the issue of not connection failed and reback
>>>> to
>>>>>> the older step and then again and again with no success to bypass
>>>> this
>>>>>> step.
>>>>>
>>>>> I think this is fixed in the installer at least v1.2.  Could you
>>>>> confirm?
>>>>>
>>>>>
>>>>> All the best,
>>>>> simon
>>>>>
>>>
>