init alphaOS for laptop

hosts/min/configuration.nix

@@ -5,7 +5,7 @@
 }:
 {
   imports = [
-    ../nuos/disk-config.nix
+    ../muos/disk-config.nix
     ../../common/boot.nix
   ];
 

hosts/muos/disk-config.nix

@@ -1,28 +1,49 @@
+# Example to create a bios compatible gpt partition
+{ lib, ... }:
 {
   disko.devices = {
-    disk = {
+    disk.main = {
-      main = {
+      device = lib.mkDefault "/dev/nvme0n1";
-        device = "/dev/disk/by-id/nvme-Samsung_SSD_980_PRO_1TB_S5GXNX0RB19202X";
       type = "disk";
       content = {
         type = "gpt";
         partitions = {
-            ESP = {
+          esp = {
+            priority = 1;
+            name = "ESP";
+            start = "1M";
+            end = "1024M";
             type = "EF00";
-              size = "1000M";
             content = {
               type = "filesystem";
               format = "vfat";
               mountpoint = "/boot";
+              mountOptions = [ "umask=0077" ];
             };
           };
           root = {
             size = "100%";
             content = {
-                type = "filesystem";
+              type = "btrfs";
-                format = "ext4";
+              extraArgs = [ "-f" ];
+              subvolumes = {
+                "/rootfs" = {
                   mountpoint = "/";
                 };
+
+                "/home" = {
+                  mountOptions = [ "compress=zstd" ];
+                  mountpoint = "/home";
+                };
+
+                "/nix" = {
+                  mountOptions = [
+                    "compress=zstd"
+                    "noatime"
+                  ];
+                  mountpoint = "/nix";
+                };
+              };
             };
           };
         };