[Nix-dev] [Help] Accidentally removed configuration.nix

[Guillaume Maudoux (Layus)]

Hi,

system.copySystemConfiguration is far from perfect. As soon as you 
modularize your config, you will miss all the other files.

If you want a correct system.copySystemConfiguration, you really need 
https://github.com/NixOS/nix/pull/709.
It allows you to snapshot all the sources of a nix derivation, not just 
one file.

I tested it back then, and it worked pretty well.

-- Layus.


On 06/04/17 17:46, nixos at vince.lol wrote:
> No I don't have `system.copySystemConfiguration=true` set :-(
> Luckily I documented my recent efforts in some gists.
> I managed to install NixOS on ZFS here: 
> https://gist.github.com/awesomefireduck/c763e168a62a0ef559a1fb9473261459
> And my (yet untested) attempt at PCI passthrough here: 
> https://gist.github.com/awesomefireduck/1be07805081a4d7a51c527e452b87b26
> There is still some missing, but nothing I can't handle, I guess.
> This is a great time to enable my ZFS snapshots... :-/
>
> Does anyone know why `system.copySystemConfiguration` is set to false 
> by default? It seems like it would be better to default this to true, 
> right?
> Or at least have this listed in the generated config? 
> (`nixos-generate-config`)
>
> Anyway, I'll be okay, thanks folks!!
>
> Sincerely,
> Vince
> On Thursday, April 6, 2017 4:58 PM, Sergiu Ivanov 
> <sivanov at colimite.fr> wrote:
>>
>> Hi Vince,
>>
>> Thus quoth  nixos at vince.lol  at 14:12 on Thu, Apr 06 2017:
>>>
>>> I acidentally removed my /etc/nixos/configuration.nix is there any way
>>> I can get it back?
>>
>> Citing directly from:
>>
>>  http://stackoverflow.com/questions/28603773/recover-accidentally-deleted-configuration-nix-file 
>>
>>
>>  '''
>>  system.copySystemConfiguration
>>
>>  If enabled, copies the NixOS configuration file $NIXOS_CONFIG (usually
>>  /etc/nixos/configuration.nix) to the system store path.
>>
>>  Type:"boolean"
>>
>>  Default:false
>>
>>  Declared by:  <nixpkgs/nixos/modules/system/activation/top-level.nix>
>>  '''
>>
>> Do you happen to have this option set to true?
>>
>> /me goes and sets it to true on his system
>>
>> -- 
>> Sergiu
>
>
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