···

       
101
       
101
       
 
       
    diskSize = "auto";

     

       
102
       
102
       
 
       
    additionalSpace = "0M"; # Defaults to 512M.

     

       
103
       
103
       
 
       
    copyChannel = false;

     

       
104
       
104
       
+
       
    memSize = 2048; # Qemu VM memory size in megabytes. Defaults to 1024M.

     

       
104
       
105
       
 
       
  }

     

       
105
       
106
       
 
       
```

     

       
106
       
107
       
 
       


     

···

       
154
       
154
       
 
       
, # Shell code executed after the VM has finished.

     

       
155
       
155
       
 
       
  postVM ? ""

     

       
156
       
156
       
 
       


     

       
157
       
157
       
+
       
, # Guest memory size

     

       
158
       
158
       
+
       
  memSize ? 1024

     

       
159
       
159
       
+
       


     

       
157
       
160
       
 
       
, # Copy the contents of the Nix store to the root of the image and

     

       
158
       
161
       
 
       
  # skip further setup. Incompatible with `contents`,

     

       
159
       
162
       
 
       
  # `installBootLoader` and `configFile`.

     
···

       
525
       
528
       
 
       
          "-drive if=pflash,format=raw,unit=1,file=$efiVars"

     

       
526
       
529
       
 
       
        ]

     

       
527
       
530
       
 
       
      );

     

       
528
       
528
       
-
       
      memSize = 1024;

     

       
531
       
531
       
+
       
      inherit memSize;

     

       
529
       
532
       
 
       
    } ''

     

       
530
       
533
       
 
       
      export PATH=${binPath}:$PATH

     

       
531
       
534
       
 
       


     

···

       
73
       
73
       
 
       
, # Shell code executed after the VM has finished.

     

       
74
       
74
       
 
       
  postVM ? ""

     

       
75
       
75
       
 
       


     

       
76
       
76
       
+
       
, # Guest memory size

     

       
77
       
77
       
+
       
  memSize ? 1024

     

       
78
       
78
       
+
       


     

       
76
       
79
       
 
       
, name ? "nixos-disk-image"

     

       
77
       
80
       
 
       


     

       
78
       
81
       
 
       
, # Disk image format, one of qcow2, qcow2-compressed, vdi, vpc, raw.

     
···

       
242
       
245
       
 
       
      {

     

       
243
       
246
       
 
       
        QEMU_OPTS = "-drive file=$bootDiskImage,if=virtio,cache=unsafe,werror=report"

     

       
244
       
247
       
 
       
         + " -drive file=$rootDiskImage,if=virtio,cache=unsafe,werror=report";

     

       
248
       
248
       
+
       
         inherit memSize;

     

       
245
       
249
       
 
       
        preVM = ''

     

       
246
       
250
       
 
       
          PATH=$PATH:${pkgs.qemu_kvm}/bin

     

       
247
       
251
       
 
       
          mkdir $out