commit b3347287be60aebc723702b5b298f9738ce8481c · pyrox.dev/nixpkgs

nixos/lib/make-disk-image.nix

···

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         # /etc/nixos/configuration.nix.

     

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         configFile ? null

     

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       , # Shell code executed after the VM has finished.

     

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         postVM ? ""

     

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       +
       

     

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       }:

     

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       with lib;

     
···

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             buildInputs = [ pkgs.utillinux pkgs.perl pkgs.e2fsprogs pkgs.parted ];

     

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             exportReferencesGraph =

     

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               [ "closure" config.system.build.toplevel ];

     

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             inherit postVM;

     

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           }

     

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           ''

     

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             ${if partitioned then ''

     
···

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             mkdir -p /mnt/nix/store

     

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             echo "copying everything (will take a while)..."

     

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             set -f

     

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             cp -prd $storePaths /mnt/nix/store/

     

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             # Register the paths in the Nix database.

     
···

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             # Generate the GRUB menu.

     

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             ln -s vda /dev/xvda

     

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             ln -s vda /dev/sda

     

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             chroot /mnt ${config.system.build.toplevel}/bin/switch-to-configuration boot

     

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             umount /mnt/proc /mnt/dev /mnt/sys

+28 -84

nixos/modules/virtualisation/virtualbox-image.nix

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         options = {

     

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           virtualbox = {

     

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             baseImageSize = mkOption {

     

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               type = types.str;

     

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               default = "10G";

     

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               type = types.int;

     

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               default = 10 * 1024;

     

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               description = ''

     

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                 The size of the VirtualBox base image. The size string should be on

     

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                 a format the qemu-img command accepts.

     

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                 The size of the VirtualBox base image in MiB.

     

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               '';

     

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             };

     

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           };

     

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         };

     

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         config = {

     

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           system.build.virtualBoxImage =

     

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             pkgs.vmTools.runInLinuxVM (

     

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               pkgs.runCommand "virtualbox-image"

     

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                 { memSize = 768;

     

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                   preVM =

     

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                     ''

     

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                       mkdir $out

     

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                       diskImage=$out/image

     

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                       ${pkgs.vmTools.qemu}/bin/qemu-img create -f raw $diskImage "${cfg.baseImageSize}"

     

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                       mv closure xchg/

     

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                     '';

     

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                   postVM =

     

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                     ''

     

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                       echo "creating VirtualBox disk image..."

     

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                       ${pkgs.vmTools.qemu}/bin/qemu-img convert -f raw -O vdi $diskImage $out/disk.vdi

     

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                       rm $diskImage

     

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                     '';

     

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                   buildInputs = [ pkgs.utillinux pkgs.perl ];

     

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                   exportReferencesGraph =

     

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                     [ "closure" config.system.build.toplevel ];

     

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       +
       

     

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           system.build.virtualBoxImage = import ../../lib/make-disk-image.nix {

     

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             inherit pkgs lib config;

     

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             partitioned = true;

     

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             diskSize = cfg.baseImageSize;

     

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             configFile = pkgs.writeText "configuration.nix"

     

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               ''

     

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                 {

     

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                   imports = [ <nixpkgs/nixos/modules/virtualisation/virtualbox-image.nix> ];

     

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                 }

     

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                 ''

     

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                   # Create a single / partition.

     

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                   ${pkgs.parted}/sbin/parted /dev/vda mklabel msdos

     

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                   ${pkgs.parted}/sbin/parted /dev/vda -- mkpart primary ext2 1M -1s

     

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                   . /sys/class/block/vda1/uevent

     

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                   mknod /dev/vda1 b $MAJOR $MINOR

     

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                   # Create an empty filesystem and mount it.

     

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                   ${pkgs.e2fsprogs}/sbin/mkfs.ext4 -L nixos /dev/vda1

     

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                   ${pkgs.e2fsprogs}/sbin/tune2fs -c 0 -i 0 /dev/vda1

     

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                   mkdir /mnt

     

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                   mount /dev/vda1 /mnt

     

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                   # The initrd expects these directories to exist.

     

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                   mkdir /mnt/dev /mnt/proc /mnt/sys

     

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                   mount --bind /proc /mnt/proc

     

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                   mount --bind /dev /mnt/dev

     

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                   mount --bind /sys /mnt/sys

     

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                   # Copy all paths in the closure to the filesystem.

     

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                   storePaths=$(perl ${pkgs.pathsFromGraph} /tmp/xchg/closure)

     

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                   echo "filling Nix store..."

     

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                   mkdir -p /mnt/nix/store

     

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                   set -f

     

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                   cp -prd $storePaths /mnt/nix/store/

     

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                   mkdir -p /mnt/etc/nix

     

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                   echo 'build-users-group = ' > /mnt/etc/nix/nix.conf

     

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                   # Register the paths in the Nix database.

     

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                   printRegistration=1 perl ${pkgs.pathsFromGraph} /tmp/xchg/closure | \

     

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                       chroot /mnt ${config.nix.package}/bin/nix-store --load-db

     

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                   # Create the system profile to allow nixos-rebuild to work.

     

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                   chroot /mnt ${config.nix.package}/bin/nix-env \

     

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                       -p /nix/var/nix/profiles/system --set ${config.system.build.toplevel}

     

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                   # `nixos-rebuild' requires an /etc/NIXOS.

     

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                   mkdir -p /mnt/etc/nixos

     

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                   touch /mnt/etc/NIXOS

     

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                   # `switch-to-configuration' requires a /bin/sh

     

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                   mkdir -p /mnt/bin

     

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                   ln -s ${config.system.build.binsh}/bin/sh /mnt/bin/sh

     

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                   # Generate the GRUB menu.

     

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                   ln -s vda /dev/sda

     

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                   chroot /mnt ${config.system.build.toplevel}/bin/switch-to-configuration boot

     

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                   umount /mnt/proc /mnt/dev /mnt/sys

     

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                   umount /mnt

     

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                 ''

     

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             );

     

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               '';

     

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             postVM =

     

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               ''

     

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                 echo "creating VirtualBox disk image..."

     

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                 ${pkgs.vmTools.qemu}/bin/qemu-img convert -f raw -O vdi $diskImage $out/disk.vdi

     

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                 rm $diskImage

     

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               '';

     

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           };

     

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           system.build.virtualBoxOVA = pkgs.runCommand "virtualbox-ova"

     

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             { buildInputs = [ pkgs.linuxPackages.virtualbox ];

     

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               vmName = "NixOS ${config.system.nixosVersion} (${pkgs.stdenv.system})";

     
···

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               VBoxManage storagectl "$vmName" --name SATA --add sata --portcount 4 --bootable on --hostiocache on

     

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               VBoxManage storageattach "$vmName" --storagectl SATA --port 0 --device 0 --type hdd \

     

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                 --medium ${config.system.build.virtualBoxImage}/disk.vdi

     

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               echo "exporting VirtualBox VM..."

     

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               mkdir -p $out

     

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               VBoxManage export "$vmName" --output "$out/$fileName"

     

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             '';

     

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           fileSystems."/".device = "/dev/disk/by-label/nixos";

     

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           boot.loader.grub.version = 2;

     

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           boot.loader.grub.device = "/dev/sda";

     

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           virtualisation.virtualbox.guest.enable = true;

     

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         };

     

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       }