Implement host-hardware separation

3 files changed, 94 insertions, 0 deletions

diff --git a/hosts/vm/hardware/virtualbox/default.nix b/hosts/vm/hardware/virtualbox/default.nix
new file mode 100644
index 0000000..b0125ee
--- /dev/null
+++ b/hosts/vm/hardware/virtualbox/default.nix
@@ -0,0 +1,4 @@
+{ ... }:
+{
+  imports = [ ./hardware.nix ];
+}
diff --git a/hosts/vm/hardware/virtualbox/disks.nix b/hosts/vm/hardware/virtualbox/disks.nix
new file mode 100644
index 0000000..6ba15ec
--- /dev/null
+++ b/hosts/vm/hardware/virtualbox/disks.nix
@@ -0,0 +1,57 @@
+{ config, lib, inputs, pkgs, modulesPath, ... }:
+{
+
+  environment.persistence."/persist" = {
+    directories = [
+      "/var/log"
+      "/var/lib"
+    ];
+    files = [
+      "/etc/machine-id"
+      "/etc/nix/id_rsa"
+    ];
+  };
+
+  fileSystems."/" = {
+    device = "none";
+    fsType = "tmpfs";
+  };
+
+  boot.initrd.luks.devices."encrypted_boot".device = "/dev/disk/by-partlabel/boot";
+
+  fileSystems."/boot" = {
+    device = "/dev/mapper/encrypted_boot";
+    fsType = "vfat";
+  };
+
+  fileSystems."/boot/efi" = {
+    device = "/dev/disk/by-partlabel/efi";
+    fsType = "vfat";
+  };
+
+  boot.initrd.luks.devices."encrypted_root".device = "/dev/disk/by-partlabel/root";
+
+  fileSystems."/nix" = {
+    device = "/dev/mapper/encrypted_root";
+    fsType = "btrfs";
+    options = [ "subvol=nix" "compress-force=zstd" "noatime" ];
+  };
+
+  fileSystems."/persist" = {
+    device = "/dev/mapper/encrypted_root";
+    fsType = "btrfs";
+    neededForBoot = true;
+    options = [ "subvol=persist" "compress-force=zstd" "noatime" ];
+  };
+
+  fileSystems."/home" = {
+    device = "/dev/mapper/encrypted_root";
+    fsType = "btrfs";
+    options = [ "subvol=home" "compress-force=zstd" ];
+  };
+
+  swapDevices = [ ];
+
+  zramSwap.enable = true;
+
+}
diff --git a/hosts/vm/hardware/virtualbox/hardware.nix b/hosts/vm/hardware/virtualbox/hardware.nix
new file mode 100644
index 0000000..470f733
--- /dev/null
+++ b/hosts/vm/hardware/virtualbox/hardware.nix
@@ -0,0 +1,33 @@
+{ config, lib, inputs, pkgs, modulesPath, ... }:
+{
+  imports = [
+    ./disks.nix
+  ];
+
+  boot = {
+    initrd = {
+      availableKernelModules =
+        [ "ata_piix" "ohci_pci" "sd_mod" "sr_mod" ];
+      kernelModules = [ ];
+    };
+    kernelPackages = pkgs.linuxPackages_latest;
+    kernelModules = [ ];
+    extraModulePackages = [ ];
+    kernelParams = [ "net.ifnames=0" "biosdevname=0" "mitigations=off" ];
+  };
+
+  services.xserver = {
+    # Enable touchpad support (enabled default in most desktopManager).
+    libinput.enable = true;
+  };
+
+  hardware = {
+    opengl = {
+      enable = true;
+      driSupport = true;
+    };
+  };
+
+  virtualisation.virtualbox.guest.enable = true;
+
+}