This is a follow-up to 49599fab56.
Fixes: <https://issues.guix.gnu.org/52908>.
* gnu/services/xorg.scm (set-xorg-configuration)[login-manager-service-type]:
When the current system or target system begins with the string "x86_64", use
gdm-service-type as before; otherwise, use sddm-service-type.
* gnu/system/examples/vm-image.tmpl (services): Add sddm-service-type to the
list of service types to remove.
* gnu/system/examples/desktop.tmpl: Only use gnome-desktop-service-type and
the default login manager in set-xorg-configuration when the target system is
x86_64.
Inspired by
1270b2e209.
The price to pay is about 5% of a CPU core usage in the guest in the worst
scenario.
* gnu/system/examples/vm-image.tmpl
(auto-update-resolution-crutch): New mcron job.
[services]: Extend the mcron-service with it.
* gnu/system/hurd.scm (%hurd-def%hurd-default-operating-system-kernel,
%hurd-default-operating-system): New exported variables.
* gnu/system/examples/bare-hurd.tmpl: New file.
* Makefile.am (EXAMPLES): Add it.
* tests/guix-system.sh: Add --target=i586-pc-gnu when testing it.
Use "openssh-sans-x" to prevent the inclusion of X libraries to the bare-bones
system closure.
* gnu/system/examples/bare-bones.tmpl (operating-system)[services]: Use
openssh-sans-x instead of openssh.
This example is broken since commit
99c45877a9 (wrong file name passed to
'local-file'), and its functionality is superseded by the upcoming
'provenance-service-type'.
* gnu/system/examples/vm-image.tmpl (this-file): Remove.
<services>: Remove 'config-file service.
* doc/guix.texi (Running Guix in a VM): Remove mentions of 'lsh-server';
mention 'openssh-service-type' and add a cross-reference.
* gnu/system/examples/vm-image.tmpl (services): Add a commented-out line
for 'openssh-service-type'.
* gnu/services/xorg.scm (gdm-service-type)[compose, extend]: New fields.
(set-xorg-configuration): New procedure.
* doc/guix.texi (Keyboard Layout): Use it.
(X Window): Document it.
* gnu/system/examples/desktop.tmpl: Add 'keyboard-layout' fields.
* gnu/system/examples/bare-bones.tmpl (services): Do it.
* gnu/system/examples/beaglebone.tmpl (packages): Do it.
(services): Do it.
* gnu/system/examples/desktop.tmpl (packages): Do it.
(services): Do it.
* gnu/system/examples/lightweight-desktop.tmpl (file-systems): Do it.
(packages): Do it.
* gnu/system/examples/vm-image.tmpl (packages): Do it.
This ensures one can scp to or from the GuixSD machine that uses the
service.
* gnu/services/ssh.scm (openssh-service-type)[extensions]: Add
PROFILE-SERVICE-TYPE extension.
* gnu/system/examples/bare-bones.tmpl <packages>: Remove OPENSSH.
* doc/guix.texi (Using the Configuration System): Adjust accordingly.
Partly fixes <https://bugs.gnu.org/30312>.
* doc/guix.texi (Preparing for Installation): Add note on how to choose
between UEFI and BIOS.
(Using the Configuration System)[Bootloader]: New subsubsection.
(Bootloader Configuration): Expound on the bootloader type and target.
* gnu/system/examples/desktop.tmpl: Switch to UEFI.
* gnu/system/examples/bare-bones.tmpl: Explicitly mention "legacy" and
"BIOS" in the comments.
The 'title' field was easily overlooked and was an endless source of
confusion. Now, the value of the 'device' field is self-contained.
* gnu/system/file-systems.scm (<file-system>): Change constructor name
to '%file-system'.
[title]: Remove.
(<file-system-label>): New record type with printer.
(report-deprecation, device-expression)
(process-file-system-declaration, file-system): New macros.
(file-system-title): New procedure.
(file-system->spec, spec->file-system): Adjust to handle
<file-system-label>.
* gnu/system.scm (bootable-kernel-arguments): Add case for
'file-system-label?'.
(read-boot-parameters): Likewise.
(mapped-device-user): Avoid 'file-system-title'.
(fs->boot-device): Remove.
(operating-system-boot-parameters): Use 'file-system-device' instead of
'fs->boot-device'.
(device->sexp): Add case for 'file-system-label?'.
* gnu/bootloader/grub.scm (grub-root-search): Add case for
'file-system-label?'.
* gnu/system/examples/bare-bones.tmpl,
gnu/system/examples/beaglebone-black.tmpl,
gnu/system/examples/lightweight-desktop.tmpl,
gnu/system/examples/vm-image.tmpl: Remove uses of 'title'.
* gnu/system/vm.scm (virtualized-operating-system): Remove uses of
'file-system-title'.
* guix/scripts/system.scm (check-file-system-availability): Likewise,
and adjust fix-it hint.
(check-initrd-modules)[file-system-/dev]: Likewise.
* gnu/build/file-systems.scm (canonicalize-device-spec): Remove 'title'
parameter.
[canonical-title]: Remove.
Match on SPEC's type rather than on CANONICAL-TITLE.
(mount-file-system): Adjust caller.
* gnu/build/linux-boot.scm (boot-system): Interpret ROOT here.
* gnu/services/base.scm (file-system->fstab-entry): Remove use of
'file-system-title'.
* doc/guix.texi (File Systems): Remove documentation of the 'title'
field. Rewrite documentation of 'device' and document
'file-system-label'.
* gnu/system/vm.scm (system-docker-image): New procedure.
* guix/scripts/system.scm (system-derivation-for-action): Add a case for
docker-image, and in that case, call system-docker-image.
(show-help): Document docker-image.
(guix-system): Parse arguments for docker-image.
* doc/guix.texi (Invoking guix system): Document "guix system
docker-image".
* gnu/system/examples/docker-image.tmpl: New file.
