hetzner_benchmark: init (#21)

Reviewed-on: https://codeberg.org/leana8959/.files/pulls/21
Co-authored-by: Léana 江 <leana.jiang+git@icloud.com>
Co-committed-by: Léana 江 <leana.jiang+git@icloud.com>

nix/configurations/hetzner_benchmark/nixos/hardware-configuration.nix

@@ -0,0 +1,35 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
+
+{
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+  ];
+
+  boot.initrd.availableKernelModules = [
+    "xhci_pci"
+    "ahci"
+    "nvme"
+  ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp41s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

nix/configurations/hetzner_benchmark/nixos/misc.nix

@@ -0,0 +1,13 @@
+{
+  boot.loader.grub.enable = true;
+
+  services.openssh.enable = true;
+
+  users.users = {
+    "root".openssh.authorizedKeys.keys = import ../../../identities.nix ++ [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFza3UN1gWQqh//FkJBzmssQ4lxHdllQGfqPHzG4LQI8 benchmark-machine"
+    ];
+  };
+
+  system.stateVersion = "25.05";
+}