Replace grub with systemd-boot

configuration.nix

@@ -9,25 +9,24 @@
     kernelModules = [ "i915" "acpi_call" ];
     extraModulePackages = with config.boot.kernelPackages; [ acpi_call ];
     supportedFilesystems = [ "zfs" ];
+    zfs.requestEncryptionCredentials = true;
   };
 
   # Intel CPU tweaks
-  hardware.cpu.intel.updateMicrocode =
-      lib.mkDefault config.hardware.enableRedistributableFirmware;
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
 
-    hardware.opengl.extraPackages = with pkgs; [
-      vaapiIntel
-      vaapiVdpau
-      libvdpau-va-gl
-    ];
+  hardware.opengl.extraPackages = with pkgs; [
+    vaapiIntel
+    vaapiVdpau
+    libvdpau-va-gl
+  ];
 
   # Bootloader configuration
   boot.loader = {
-    timeout = 2;
-    grub = {
-      efiSupport = true;
+    efi.canTouchEfiVariables = true;
+    systemd-boot = {
+      enable = true;
       configurationLimit = 50;
-      copyKernels = true;
     };
   };
 
@@ -69,12 +68,16 @@
   swapDevices = [ { device = "/swap"; size = 8192; } ];
   boot.resumeDevice = "/swap";
 
+  # NixOS version
+  system.stateVersion = "20.09";
+
   # Import other configuration modules
   imports = [
     ./modules/software.nix
     ./modules/networking.nix
     ./modules/gui.nix
     ./modules/datasync.nix
+    ./modules/audio.nix
   ];
 
 }