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

[Vince]

Benjamin Herr <ben at 0x539.de> schreef op 10 april 2017 19:17:44 CEST:
>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
>> > 
>> > 
>> > 
>> > _______________________________________________
>> > nix-dev mailing list
>> > nix-dev at lists.science.uu.nl
>> > http://lists.science.uu.nl/mailman/listinfo/nix-dev
>> 
>> 
>> _______________________________________________
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>> 


What does that do, exactly? The entry at http://nixos.org/nixos/options.html#environment.etc.%3Cname?%3E.source is somewhat lacking...

I made a PR at https://github.com/NixOS/nixpkgs/pull/24707 . If some of you could check it out and give me some feedback that’d be great :-)

cheers,
Vince
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