installer: Add "Kernel" page to select the Hurd.

This adds a "Kernel" page to the installer with the option to (cross-) install
the Hurd, if applicable (only available on x86 machines for now).

* gnu/installer/newt.scm (kernel-page): New procedure.
(newt-installer)[kernel-page]: New field.
* gnu/installer/kernel.scm,
gnu/installer/newt/kernel.scm: New files.
* gnu/local.mk (INSTALLER_MODULES): Add them.
* gnu/installer.scm (installer-steps): Use them to select kernel if
applicable.
* gnu/installer/newt/partition.scm (run-label-page): Default to "msdos" when
instaling the Hurd.
(run-fs-type-page): Add ext2 for the hurd.
(run-partitioning-page-partition): Remove `entire-encrypted' option when
installing the Hurd.
* gnu/installer/services.scm (system-services->configuration): Cater for the
Hurd with %base-services/hurd, and with %base-packages/hurd that must always
be set.
(%system-services): Change to procedure.  When installing the the Hurd, do not
recommend `ntp-service-type' and USE `openssh-sans-x' package for
`openssh-service-type'.
(system-service-none): New variable.
* gnu/installer/newt/services.scm (run-network-management-page): Include it
when installing the Hurd.
(run-desktop-environments-cbt-page): When installing the Hurd, recommend to
not select any desktop enviroment.  Update users.
* gnu/installer/parted.scm (efi-installation?): Return #f when installing for
the Hurd.
(create-ext2-file-system): New procedure.
(user-fs-type-name, user-fs-type->mount-type, partition-filesystem-user-type,
format-user-partitions): Support `ext2'.
(<user-partition> partition->user-partition): Use `ext2' when installing the
Hurd.
(auto-partition!): Likewise.  No swap partition when installing the Hurd.
* gnu/installer/final.scm (install-system): Cater for cross installation of
the Hurd.
(bootloader-configuration): Use `grub-minimal-bootloader' when installing the
Hurd.
(user-partition-missing-modules): Cater for empty user-partitions.
(initrd-configuration, user-partitions->configuration): Cater for the Hurd.
* gnu/installer/steps.scm (format-configuration,
configuration->file): Cater for the Hurd.
* gnu/system/hurd.scm (%desktop-services/hurd): New variable.
* gnu/installer/tests.scm (choose-kernel): New procedure.
* gnu/tests/install.scm (gui-test-program): Use it.

Change-Id: Ifafb27b8a2f933944c77223a27ec151757237e36

1 files changed, 9 insertions, 5 deletions

diff --git a/gnu/installer/steps.scm b/gnu/installer/steps.scm
index de0a852f02a..34dd14c9d56 100644
--- a/gnu/installer/steps.scm
+++ b/gnu/installer/steps.scm
@@ -23,6 +23,7 @@
   #:use-module (guix build utils)
   #:use-module (guix i18n)
   #:use-module (guix read-print)
+  #:use-module (guix utils)
   #:use-module (gnu installer utils)
   #:use-module (ice-9 match)
   #:use-module (srfi srfi-1)
@@ -240,17 +241,20 @@ found in RESULTS."
                    ,(comment (G_ "\
 ;; Indicate which modules to import to access the variables
 ;; used in this configuration.\n"))
-                   (use-modules (gnu))
+                   ,@(if (target-hurd?)
+                         '((use-modules (gnu) (gnu system hurd))
+                           (use-package-modules hurd ssh))
+                         '((use-modules (gnu))))
                    (use-service-modules cups desktop networking ssh xorg))))
     `(,@modules
       ,(vertical-space 1)
       (operating-system ,@configuration))))
 
 (define* (configuration->file configuration
-                              #:key (filename (%installer-configuration-file)))
-  "Write the given CONFIGURATION to FILENAME."
-  (mkdir-p (dirname filename))
-  (call-with-output-file filename
+                              #:key (file-name (%installer-configuration-file)))
+  "Write the given CONFIGURATION to FILE-NAME."
+  (mkdir-p (dirname file-name))
+  (call-with-output-file file-name
     (lambda (port)
       ;; TRANSLATORS: This is a comment within a Scheme file.  Each line must
       ;; start with ";; " (two semicolons and a space).  Please keep line