Add Macbook to the roster and whatnot

hosts/treefruit/system/boot/default.nix

@@ -0,0 +1,17 @@
+{ pkgs, ... }:
+{
+  boot = {
+    kernelPackages = pkgs.linuxPackages_latest;
+    kernel.sysctl."vm.max_map_count" = 2147483642;       
+    initrd = {
+      systemd.enable = true;
+      luks.devices = {
+        crypt-mmc = {
+          device = "/dev/disk/by-uuid/5bc11b61-e4dc-465c-b87a-533955cf6177";
+          preLVM = true;
+          allowDiscards = true;
+        };
+      };
+    };
+  };
+}