nix-infra/helper.nix

{ nixpkgs, ... }:
{
  generateColmenaHost = name: {
    site,
    modules,
    ...
  }: {
    deployment = {
      targetHost = "${name}.${site}.grzb.de";
      targetUser = "colmena-deploy";
    };

    # Set imports and optionally import colmena secrets configuration
    imports = modules ++ nixpkgs.lib.optional (builtins.pathExists ./config/hosts/${name}/secrets.nix) ./config/hosts/${name}/secrets.nix;
  };

  generateNixConfiguration = name: specialArgs: {
    hostNixpkgs,
    system,
    modules,
    ...
  }:
  let
    # Filter attritubes starting with _ to avoid infinite recursion when building with hydra
    # TODO: Why does this happen?
    filter = name: host: (builtins.substring 0 1 name) != "_";
  in
    (nixpkgs.lib.filterAttrs filter (hostNixpkgs.lib.nixosSystem {
      inherit system modules specialArgs;
    })).config.system.build.toplevel; # Builds the entire NixOS system, see: https://nixos.org/manual/nixos/stable/#sec-building-parts
}