image: Add a new API.

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.

1 files changed, 19 insertions, 26 deletions

diff --git a/gnu/ci.scm b/gnu/ci.scm
index fb2596c809c..0430cf594b7 100644
--- a/gnu/ci.scm
+++ b/gnu/ci.scm
@@ -38,6 +38,7 @@
                 #:select (lookup-compressor self-contained-tarball))
   #:use-module (gnu bootloader)
   #:use-module (gnu bootloader u-boot)
+  #:use-module (gnu image)
   #:use-module (gnu packages)
   #:use-module (gnu packages gcc)
   #:use-module (gnu packages base)
@@ -49,6 +50,7 @@
   #:use-module (gnu packages make-bootstrap)
   #:use-module (gnu packages package-management)
   #:use-module (gnu system)
+  #:use-module (gnu system image)
   #:use-module (gnu system vm)
   #:use-module (gnu system install)
   #:use-module (gnu tests)
@@ -209,32 +211,23 @@ system.")
     (expt 2 20))
 
   (if (member system %guixsd-supported-systems)
-      (if (member system %u-boot-systems)
-          (list (->job 'flash-image
-                       (run-with-store store
-                         (mbegin %store-monad
-                           (set-guile-for-build (default-guile))
-                           (system-disk-image
-                            (operating-system (inherit installation-os)
-                             (bootloader (bootloader-configuration
-                                          (bootloader u-boot-bootloader)
-                                          (target #f))))
-                            #:disk-image-size
-                            (* 1500 MiB))))))
-          (list (->job 'usb-image
-                       (run-with-store store
-                         (mbegin %store-monad
-                           (set-guile-for-build (default-guile))
-                           (system-disk-image installation-os
-                                              #:disk-image-size
-                                              (* 1500 MiB)))))
-                (->job 'iso9660-image
-                       (run-with-store store
-                         (mbegin %store-monad
-                           (set-guile-for-build (default-guile))
-                           (system-disk-image installation-os
-                                              #:file-system-type
-                                              "iso9660"))))))
+      (list (->job 'usb-image
+                   (run-with-store store
+                     (mbegin %store-monad
+                       (set-guile-for-build (default-guile))
+                       (system-image
+                        (image
+                         (inherit efi-disk-image)
+                         (size (* 1500 MiB))
+                         (operating-system installation-os))))))
+            (->job 'iso9660-image
+                   (run-with-store store
+                     (mbegin %store-monad
+                       (set-guile-for-build (default-guile))
+                       (system-image
+                        (image
+                         (inherit iso9660-image)
+                         (operating-system installation-os)))))))
       '()))
 
 (define channel-build-system