nixTroubleshoot

arch.nix

let
  template = import ./conf.nix;
in
{
  network.description = "Load balancing network";
  # TODO override some template value
  balancer = template // { networking.hostname =  "balancer"; };
}

conf.nix

{ config, pkgs, ... }:

{
    networking.hostName = "nixos101";
}

deployment.nix

let
  # vbox = { deployment.targetEnv = "virtualbox"; };
in
{
  balancer    = { deployment.targetHost = "192.168.1.101"; };
}

output.log

nixops delete --all

nixops create ./arch.nix ./deployment.nix -d load-balancer
created deployment ‘05b38e4c-bf85-11e7-8dda-0a0027000026’
05b38e4c-bf85-11e7-8dda-0a0027000026

nixops info
error: value is a function while a set was expected
(use ‘--show-trace’ to show detailed location information)
warning: evaluation of the deployment specification failed; status info may be incorrect

Network name: load-balancer
Network UUID: 05b38e4c-bf85-11e7-8dda-0a0027000026
Network description: Unnamed NixOps network
Nix expressions: <path>/arch.nix <path>/deployment.nix