feat(X13Gen2): integrate disko for disk partitioning and management

- Added disko as a new input in flake.nix and flake.lock
- Configured disko module in X13Gen2 nixosSystem definition
- Introduced a new disko-config.nix file for partitioning and filesystem setup
- Updated default.nix to include disko-config.nix in the modules list
- Removed legacy filesystem definitions from hardware-configuration.nix

Author: takeokunn

flake.lock

@@ -42,6 +42,10 @@
       url = "github:natsukium/mcp-servers-nix";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    disko = {
+      url = "github:nix-community/disko";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -65,7 +69,13 @@
           OPL2212-2 = import ./hosts/OPL2212-2 { inherit inputs; };
         };
         nixosConfigurations = {
-          X13Gen2 = import ./hosts/X13Gen2 { inherit inputs; };
+          X13Gen2 = inputs.nixpkgs.lib.nixosSystem {
+            system = "x86_64-linux";
+            modules = [
+              ./hosts/X13Gen2
+              inputs.disko.nixosModules.disko
+            ];
+          };
         };
         nixOnDroidConfigurations = {
           OPPO-A79 = import ./hosts/OPPO-A79 { inherit inputs; };

flake.nix

@@ -15,6 +15,7 @@ nixpkgs.lib.nixosSystem {
   modules = [
     ../../nixos
     ./hardware-configuration.nix
+    ./disko-config.nix
     sops-nix.nixosModules.sops
     home-manager.nixosModules.home-manager
     {

hosts/X13Gen2/default.nix

@@ -0,0 +1,59 @@
+{ lib, ... }:
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/nvme0n1"; # Change this to your disk device
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              size = "512M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+            root = {
+              size = "100%";
+              content = {
+                type = "btrfs";
+                extraArgs = [ "-f" ]; # Override existing partitions
+                subvolumes = {
+                  "/root" = {
+                    mountpoint = "/";
+                    mountOptions = [
+                      "compress=zstd"
+                      "noatime"
+                    ];
+                  };
+                  "/home" = {
+                    mountpoint = "/home";
+                    mountOptions = [
+                      "compress=zstd"
+                      "noatime"
+                    ];
+                  };
+                  "/nix" = {
+                    mountpoint = "/nix";
+                    mountOptions = [
+                      "compress=zstd"
+                      "noatime"
+                    ];
+                  };
+                  "/swap" = {
+                    mountpoint = "/swap";
+                    swap.swapfile.size = "8G";
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

hosts/X13Gen2/disko-config.nix

@@ -24,21 +24,6 @@
     extraModulePackages = [ ];
   };
 
-  fileSystems = {
-    "/" = {
-      device = "/dev/disk/by-uuid/643f028c-88a5-45af-b7b8-52d78f05a501";
-      fsType = "ext4";
-    };
-    "/boot" = {
-      device = "/dev/disk/by-uuid/A44D-7A24";
-      fsType = "vfat";
-      options = [
-        "fmask=0022"
-        "dmask=0022"
-      ];
-    };
-  };
-
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
   networking.useDHCP = lib.mkDefault true;
   hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;