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

[Layus]

This is pure genious !
Simple and yet powerful. Thanks for sharing :-).
It can be customized with filterSource and such if you want more control.

However, it does not track modifications to nixpkgs.
I have a bad habit of building NixOS from dirty nixpkgs repos to test my 
various fixes.
Any idea to handle that ?

-- Layus.

On 10/04/17 19:17, Benjamin Herr wrote:
> I've been putting
>
>      environment.etc = {
>          nixos-orig.source = ./.;
>      };
>
> into my configuration.nix and for my still fairly trivial but at least
> somewhat moduralized config it seems to work out all right.
>
>
> On Thu, 2017-04-06 at 18:12 +0200, Guillaume Maudoux (Layus) wrote:
>> 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/c763e168a62a0ef559a1fb94732
>>> 61459
>>> And my (yet untested) attempt at PCI passthrough here:
>>> https://gist.github.com/awesomefireduck/1be07805081a4d7a51c527e452b
>>> 87b26
>>> 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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