add new host bemmer

hosts/bemmer/configuration.nix

@@ -0,0 +1,43 @@
+{ modulesPath, lib, pkgs, ... }:
+
+{
+  imports = [
+    (modulesPath + "/installer/sd-card/sd-image-aarch64.nix")
+    <nixos-hardware/raspberry-pi/4>
+    ../../common
+
+    # services
+    ../../shared-services/pulseaudio.nix
+    #../../shared-services/nfs-server.nix
+    ../../shared-services/mpd.nix
+    ../../shared-services/ympd.nix
+    ../../shared-services/spotifyd.nix
+    ../../shared-services/desktop.nix
+    ../../shared-services/vnc.nix
+    ../../shared-services/webserver.nix
+  ];
+  users.users.c3h = {
+    isNormalUser = true;
+    password = "c3h";
+    extraGroups = [ "wheel" ];
+    packages = with pkgs; [ chromium firefox mpv youtube-dl ];
+  };
+
+  networking.hostName = "bemmer";
+  networking.domain = "c3h";
+
+  networking.useDHCP = true;
+
+  nixpkgs.system = "aarch64-linux";
+  boot.initrd.availableKernelModules = lib.mkForce [ "vc4" "i2c_bcm2835" ];
+  boot.supportedFilesystems = lib.mkForce [ "ext4" "vfat" ];
+  boot.kernelPackages = pkgs.linuxPackages_rpi4;
+  documentation.enable = false;
+
+  hardware.raspberry-pi."4" = {
+    fkms-3d.enable = true;
+    #audio.enable = true;
+  };
+
+  system.stateVersion = "21.05";
+}