Make the operating-system field mandatory as creating an image without it
makes no sense. Introduce a new macro, image-without-os for the specific cases
where the image is only created to be inherited from afterwards.
* gnu/image.scm (<image>)[operating-system]: Make it mandatory.
* gnu/system/image.scm (image-without-os): New macro.
(efi-disk-image, efi32-disk-image, iso9660-image, docker-image,
raw-with-offset-disk-image): Use it.
* gnu/system/images/hurd.scm (hurd-disk-image): Ditto.
* gnu/image.scm (validate-size, validate-partition-offset,
validate-partition-flags): New macros.
(<partition>)[size, offset, flags]: Sanitize those fields using the above
procedures respectively.
This allows common mistakes to be diagnosed early.
* gnu/image.scm (define-set-sanitizer): New macro.
(validate-image-format, validate-partition-table-type): New sanitizers.
(<image>)[format, partition-table-type]: Add 'sanitize' property.
Previously, the default value would lead to a wrong-type-to-apply crash.
* gnu/system/image.scm (system-disk-image)[image-builder]: When
'partition-initializer' returns #f, fall back to
INITIALIZE-ROOT-PARTITION.
* gnu/tests/base.scm (run-root-unmount-test)[test-image]: Remove
'initializer' field of partition.
* gnu/image.scm (<partition>)[initializer]: Add comment.
This moves hurd-disk-image to a dedicated file. It also defines a default
operating-system so that the image can be built standalone.
* gnu/system/images/hurd.scm: New file,
* gnu/local.mk (GNU_SYSTEM_MODULES): add it,
* gnu/system/image.scm (root-offset, root-label): Export it,
(hurd-disk-image): remove it as this is now defined in the new, Hurd dedicated
file above,
(find-image): adapt to avoid loop dependency.
* gnu/image.scm (<image>)[target]: New field,
(image-target): new public method.
* gnu/system/image.scm (hurd-disk-image): Set "i586-pc-gnu" as image 'target'
field,
(maybe-with-target): new procedure,
(system-image): honor image 'target' field using the above procedure.
* gnu/image.scm (partition-offset): New procedure,
(<partition>)[offset]: new field.
* gnu/system/image.scm (system-disk-image): Apply the partition offset.
Raw disk-images and ISO9660 images are created in a Qemu virtual machine. This
is quite fragile, very slow, and almost unusable without KVM.
For all these reasons, add support for host image generation. This implies the
use new image generation mechanisms.
- Raw disk images: images of partitions are created using tools such as mke2fs
and mkdosfs depending on the partition file-system type. The partition
images are then assembled into a final image using genimage.
- ISO9660 images: the ISO root directory is populated within the store. GNU
xorriso is then called on that directory, in the exact same way as this is
done in (gnu build vm) module.
Those mechanisms are built upon the new (gnu image) module.
* gnu/image.scm: New file.
* gnu/system/image.scm: New file.
* gnu/build/image: New file.
* gnu/local.mk: Add them.
* gnu/system/vm.scm (system-disk-image): Rename to system-disk-image-in-vm.
* gnu/ci.scm (qemu-jobs): Adapt to new API.
* gnu/tests/install.scm (run-install): Ditto.
* guix/scripts/system.scm (system-derivation-for-action): Ditto.
