From a6700d75f38cda83367a8af84651a2a72ce0f3ef Mon Sep 17 00:00:00 2001
From: lassulus <lassulus@lassul.us>
Date: Sat, 24 Jul 2021 09:33:10 +0200
Subject: [PATCH] vbox-image: add new option to set free space in image

---
 nixos/modules/virtualisation/virtualbox-image.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/nixos/modules/virtualisation/virtualbox-image.nix b/nixos/modules/virtualisation/virtualbox-image.nix
index 272c696807aa..853dd642a76d 100644
--- a/nixos/modules/virtualisation/virtualbox-image.nix
+++ b/nixos/modules/virtualisation/virtualbox-image.nix
@@ -18,6 +18,13 @@ in {
           The size of the VirtualBox base image in MiB.
         '';
       };
+      baseImageFreeSpace = mkOption {
+        type = with types; int;
+        default = 30 * 1024;
+        description = ''
+          Free space in the VirtualBox base image in MiB.
+        '';
+      };
       memorySize = mkOption {
         type = types.int;
         default = 1536;
@@ -129,6 +136,7 @@ in {
       inherit pkgs lib config;
       partitionTableType = "legacy";
       diskSize = cfg.baseImageSize;
+      additionalSpace = cfg.baseImageFreeSpace;
 
       postVM =
         ''