Refactor the whole configuration

Reviewed-on: #1

hosts/vm/default.nix

@@ -0,0 +1,49 @@
+{ pkgs, lib, modulesPath, ... }:
+
+{
+  imports = [
+    ./disko.nix
+    ./packages.nix
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
+
+  time.timeZone = "Europe/Berlin";
+
+  networking = {
+    hostName = "vm";
+    useDHCP = lib.mkDefault true;
+  };
+
+  boot = {
+    loader = {
+      grub = {
+        enable = true;
+        # device = "/dev/sda"; # [managed by install.sh]
+        gfxmodeEfi = "1920x1080";
+      };
+    };
+
+    tmp.useTmpfs = true;
+    kernelPackages = pkgs.linuxPackages_xanmod_latest;
+    supportedFilesystems = [ "btfs" "vfat" "xfs" ];
+    initrd = {
+      availableKernelModules = [ "nvme" "xhci_pci" "ahci"
+                                 "usbhid" "usb_storage" "sd_mod" ];
+    };
+  };
+
+  services = {
+    fstrim.enable = true;
+    btrfs.autoScrub.enable = true;
+  };
+
+  fileSystems = {
+    # These are system specific. If you have any additional drives that are not
+    # your root device you can add and mount them here. Added nofail so that you can
+    # install this configuration on a device without it exploding when you don't have
+    # these specific partitions.
+  };
+
+  system.stateVersion = "24.11"; # [managed by install.sh]
+}
+

hosts/vm/disko.nix

@@ -0,0 +1,54 @@
+{ ... }:
+
+{
+  disko.devices = {
+    disk = {
+      master = {
+        type = "disk";
+        device = "/dev/vda"; # [managed by install.sh]
+        content = {
+          type = "gpt";
+          partitions = {
+            grub_mbr = {
+              size = "1M";
+              type = "EF02"; # for grub MBR
+            };
+            boot = {
+              size = "1G";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/boot";
+              };
+            };
+            root = {
+              size = "100%";
+              content = {
+                type = "btrfs";
+                extraArgs = [ "-f" "-L nixos" ];
+                subvolumes = {
+                  /* Do not rename the root partition as it'll break impermanence */
+                  "/root" = {
+                    mountpoint = "/";
+                    mountOptions = [
+                      "noatime"
+                      "compress=zstd"
+                    ];
+                  };
+
+                  "/nix" = {
+                    mountpoint = "/nix";
+                    mountOptions = [
+                      "noatime"
+                      "compress=zstd"
+                    ];
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

hosts/vm/packages.nix

@@ -0,0 +1,14 @@
+{ ... }:
+
+{
+  imports = let
+    modules = ../../modules/nixos;
+  in [
+    "${modules}/core"
+    "${modules}/hardware/audio"
+    "${modules}/hardware/gpu/graphics.nix"
+    "${modules}/multimedia"
+    "${modules}/desktop/gnome"
+  ];
+}
+