Add several NixOS hosts on Proxmox and Oracle Cloud

profiles/server1/spotifyd/hardware-configuration.nix

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+# 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 = [ ];
+
+  boot.initrd.availableKernelModules = [ "ahci" "xhci_pci" "vfio_pci" "usbhid" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/mapper/pve-vm--123--disk--0";
+      fsType = "ext4";
+    };
+
+  swapDevices = [ ];
+
+  # 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.eth0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

profiles/server1/spotifyd/nixos.nix

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+{ config, pkgs, modulesPath, ... }:
+
+{
+  
+  imports = [
+    (modulesPath + "/virtualisation/proxmox-lxc.nix")
+    ./hardware-configuration.nix
+  ];
+  
+  
+  
+  services.xserver = {
+    layout = "us";
+    xkbVariant = "altgr-intl";
+  };
+  nix.settings.experimental-features = ["nix-command" "flakes"];
+  proxmoxLXC.manageNetwork = true; # manage network myself
+  proxmoxLXC.manageHostName = false; # manage hostname myself
+  networking.useDHCP = true;
+  networking.enableIPv6 = false;
+  services.openssh = {
+    enable = true;
+    settings.PermitRootLogin = "yes";
+    listenAddresses = [{
+      port = 22;
+      addr = "0.0.0.0";
+    }];
+  };
+  users.users.root.openssh.authorizedKeys.keyFiles = [
+    ../../../secrets/keys/authorized_keys
+  ];
+  
+  system.stateVersion = "23.05"; # TEMPLATE - but probably no need to change
+  
+  environment.shellAliases = {
+    nswitch = "cd /.dotfiles; git pull; nixos-rebuild --flake .#$(hostname) switch; cd -;";
+  };
+  
+  
+
+  proxmoxLXC.privileged = true; # manage hostname myself
+
+  users.groups.spotifyd = {
+    gid = 65136;
+  };
+
+  users.users.spotifyd = {
+    isSystemUser = true;
+    uid = 65136;
+    group = "spotifyd";
+    extraGroups  = [ "audio" "utmp" ];
+  };
+
+  sound = {
+    enable = true;
+  };
+
+  hardware.enableAllFirmware = true;
+  networking.hostName = "spotifyd"; # Define your hostname.
+  networking.firewall.enable = false;
+  environment.systemPackages = with pkgs; [
+    git
+    gnupg
+    ssh-to-age
+  ];
+
+  # sops.age.sshKeyPaths = [ "/etc/ssh/sops" ];
+  # sops.defaultSopsFile = "/.dotfiles/secrets/spotifyd/secrets.yaml";
+  # sops.validateSopsFiles = false;
+
+  services.spotifyd = {
+    enable = true;
+    settings = {
+      global = {
+        dbus_type = "session";
+        use_mpris = false;
+        device = "default:CARD=PCH";
+        device_name = "SwarselSpot";
+        mixer = "alsa";
+        zeroconf_port = 1025;
+      };
+    };
+  };
+
+}