[Nix-dev] nixops: Deploying from macOS

[Kirill Elagin]

I still can’t make sense of the troubles you were experiencing.

As far as I understand it, if one has configured nix-daemon, then there is
basically no way to use `NIX_REMOTE_SYSTEMS` from nixops and one has to
configure nix-daemon by setting `NIX_REMOTE_SYSTEMS` in its environment.
After reading the description of your issue I was left under an impression
that you somehow managed to make it work without reconfiguring nix-daemon.
Am I wrong?

Without nix-daemon I don’t think there are any problems as of today.


On Sat, May 27, 2017 at 9:08 PM Wout Mertens <wout.mertens at gmail.com> wrote:

> The problem is probably ssh-ing into the VM it should be using for
> building. This probably fails due to not having the correct environment,
> and then it silently decides building on OSX.
>
> On Fri, May 26, 2017, 12:39 PM Kirill Elagin <kirelagin at gmail.com> wrote:
>
>> Hi,
>>
>> I have finally switched my laptop to using nix-daemon and got bitten by
>> https://github.com/NixOS/nixops/issues/260 (and/or
>> https://github.com/NixOS/nixops/issues/483).
>>
>> To be honest, I am completely lost. Could someone please explain to me
>> what is going on here?
>>
>> 1. The error that I get is this one:
>>
>> > error: a ‘x86_64-linux’ is required to build
>> ‘/nix/store/cm2y0hlgv6dpcyzf022ih1b0qwh3x5n7-etc-logind.conf.drv’, but I am
>> a ‘x86_64-darwin’
>>
>> Why on Earth is Linux needed to build _config files_? Building configs is
>> mostly echoing, right? Who exactly tells nix that `environment.etc` files
>> require a certain platform to be built? Maybe we could fix that?
>>
>> 2. How is this all related to nix-daemon? `nixops/deployment.py` checks
>> for `os.environ.get('NIX_REMOTE') != 'daemon'`, why does it do this? Is
>> that because `NIX_BUILD_HOOK` does not work when using nix-daemon? What’s
>> that whole story with `NIX_REMOTE_SYSTEMS` and ssh keys really about? Why
>> are there no issues with ssh keys when we I do not use nix-daemon? Why
>> copying something manually helps?
>>
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