In reply to @noah:matrix.chatsubo.cafe
Zhaofeng Li Is there a command to build and apply? Rather then having to seperately run both operations?

In reply to @zhaofeng:zhaofeng.li
Ah, great timing. I've been working on a stateless deployment tool called Colmena, which just got Flakes support today: https://github.com/zhaofengli/colmena

In reply to @noah:matrix.chatsubo.cafe
Zhaofeng Li: Question, when specifying a specific nixpkgs for a node can I supply it a URL? A la https://github.com/nixos/nixpkgs/archive/master.tar.gz?

So like the following:

nodeNixpkgs = {                                                             
      memx = "${builtins.fetchTarball https://github.com/NixOS/nixpkgs/archive/65c9cc79f1d179713c227bf447fb0dac384cdcda.tar.gz}";
    }; 

Like

builtins.fetchTarball {
  url = "https://github.com/NixOS/nixpkgs/archive/65c9cc79f1d179713c227bf447fb0dac384cdcda.tar.gz";
  sha256 = [hash here];
}

Zhaofeng Li: So I've got the following hive.nix

{
  meta = {
    nixpkgs = <nixpkgs>;

    nodeNixpkgs = {
      memx = builtins.fetchTarball {
	url = "https://github.com/NixOS/nixpkgs/archive/65c9cc79f1d179713c227bf447fb0dac384cdcda.tar.gz";
	sha256 = "0whxlm098vas4ngq6hm3xa4mdd2yblxcl5x5ny216zajp08yp1wf";
      };
    };
  };

  defaults = {
    imports = [ ./common ];
  };

  teapot = {
    deployment = {
      targetHost = "192.168.1.120";
      targetUser = "noah";
      replaceUnknownProfiles = false;
      tags = [ "infra" ];
    };

    imports = [
    ./machines/teapot
    "${builtins.fetchTarball https://github.com/rycee/home-manager/tarball/release-20.09}/nixos"
    ];
  };

  memex = {
    deployment = {
      targetHost = "192.168.1.235";
      targetUser = "noah";
      replaceUnknownProfiles = false;
      tags = [ "storage" "infra" ];
    };

    imports = [
    ./machines/memex
    ];
  };
}

I've pinned the nixpkgs for the memex node that way as it relies on the linux_5_9 kernel package which is no longer in tree.

However running colmena apply gives me:

noah@TEAPOT-BARON-TYBURN:~/code/NixOS-Home-Network$ colmena apply
[INFO ] Enumerating nodes...
error: attribute 'linux_5_9' missing, at /home/noah/code/NixOS-Home-Network/machines/memex/default.nix:101:34
(use '--show-trace' to show detailed location information)
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: NixFailure { exit_code: 1 }', src/command/apply.rs:121:50
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Okay now I'm seeing

noah@TEAPOT-BARON-TYBURN:~/code/NixOS-Home-Network$ colmena apply
[INFO ] Enumerating nodes...
error: meta.nodeNixpkgs.memex must be one of:

- A path to Nixpkgs (e.g., <nixpkgs>)
- A Nixpkgs lambda (e.g., import <nixpkgs>)
- A Nixpkgs attribute set

I've got the following flags in my aarch64 machines config to allow for cross compiling:

nixpkgs.system = "aarch64-linux";                                             
nixpkgs.crossSystem.system = "aarch64-linux";```

I've got the following flags in my aarch64 machines config to allow for cross compiling:

nixpkgs.system = "aarch64-linux";                                             
nixpkgs.crossSystem.system = "aarch64-linux";