+disko

flake.nix

@@ -18,6 +18,11 @@
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-24.05";
 
+    disko = {
+      url = "github:nix-community/disko";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     dotfiles = {
       url = "git+https://code.m3tam3re.com/m3tam3re/dotfiles-flake-demo.git";
       flake = false;
@@ -26,6 +31,7 @@
 
   outputs = {
     self,
+    disko,
     dotfiles,
     home-manager,
     nixpkgs,
@@ -47,7 +53,10 @@
     nixosConfigurations = {
       m3-kratos-vm = nixpkgs.lib.nixosSystem {
         specialArgs = {inherit inputs outputs;};
-        modules = [./hosts/m3-kratos];
+        modules = [
+          ./hosts/m3-kratos
+          inputs.disko.nixosModules.disko
+        ];
       };
     };
     homeConfigurations = {

hosts/m3-kratos/configuration.nix

@@ -4,6 +4,7 @@
 {pkgs, ...}: {
   imports = [
     # Include the results of the hardware scan.
+    ./disko-config.nix
     ./hardware-configuration.nix
   ];
 

hosts/m3-kratos/disko-config.nix

@@ -0,0 +1,36 @@
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/vda";
+        content = {
+          type = "gpt";
+          partitions = {
+            boot = {
+              size = "1M";
+              type = "EF02"; # for grub MBR
+            };
+            ESP = {
+              size = "512M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+            root = {
+              size = "100%";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

hosts/m3-kratos/hardware-configuration.nix

@@ -1,11 +1,15 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
-
 {
-  imports =
+  config,
-    [ (modulesPath + "/profiles/qemu-guest.nix")
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}: {
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
   ];
 
   boot.initrd.availableKernelModules = ["ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk"];
@@ -13,13 +17,6 @@
   boot.kernelModules = ["kvm-intel"];
   boot.extraModulePackages = [];
 
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/b3fbba01-1206-44d9-9b15-72e6313b4f72";
-      fsType = "ext4";
-    };
-
-  swapDevices = [ ];
-
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's
   # still possible to use this option, but it's recommended to use it in conjunction
@@ -29,4 +26,3 @@
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
 }
-