Merge pull request #120489 from samueldr/fix/make-disk-image-auto-size

Fix make disk image automatic size

nixos/modules/virtualisation/azure-image.nix

@@ -9,8 +9,9 @@ in
 
   options = {
     virtualisation.azureImage.diskSize = mkOption {
-      type = with types; int;
-      default = 2048;
+      type = with types; either (enum [ "auto" ]) int;
+      default = "auto";
+      example = 2048;
       description = ''
         Size of disk image. Unit is MB.
       '';

nixos/modules/virtualisation/digital-ocean-image.nix

@@ -10,8 +10,9 @@ in
 
   options = {
     virtualisation.digitalOceanImage.diskSize = mkOption {
-      type = with types; int;
-      default = 4096;
+      type = with types; either (enum [ "auto" ]) int;
+      default = "auto";
+      example = 4096;
       description = ''
         Size of disk image. Unit is MB.
       '';

nixos/modules/virtualisation/google-compute-image.nix

@@ -18,8 +18,9 @@ in
 
   options = {
     virtualisation.googleComputeImage.diskSize = mkOption {
-      type = with types; int;
-      default = 1536;
+      type = with types; either (enum [ "auto" ]) int;
+      default = "auto";
+      example = 1536;
       description = ''
         Size of disk image. Unit is MB.
       '';

nixos/modules/virtualisation/hyperv-image.nix

@@ -9,8 +9,9 @@ in {
   options = {
     hyperv = {
       baseImageSize = mkOption {
-        type = types.int;
-        default = 2048;
+        type = with types; either (enum [ "auto" ]) int;
+        default = "auto";
+        example = 2048;
         description = ''
           The size of the hyper-v base image in MiB.
         '';

nixos/modules/virtualisation/virtualbox-image.nix

@@ -11,8 +11,9 @@ in {
   options = {
     virtualbox = {
       baseImageSize = mkOption {
-        type = types.int;
-        default = 50 * 1024;
+        type = with types; either (enum [ "auto" ]) int;
+        default = "auto";
+        example = 50 * 1024;
         description = ''
           The size of the VirtualBox base image in MiB.
         '';

nixos/modules/virtualisation/vmware-image.nix

@@ -18,8 +18,9 @@ in {
   options = {
     vmware = {
       baseImageSize = mkOption {
-        type = types.int;
-        default = 2048;
+        type = with types; either (enum [ "auto" ]) int;
+        default = "auto";
+        example = 2048;
         description = ''
           The size of the VMWare base image in MiB.
         '';