* gnu/packages/package-management.scm (guix): Update to 44c6e6f5.

Fixes <https://bugs.gnu.org/43131>.

* gnu/packages/patches/xmonad-dynamic-linking.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/wm.scm (xmonad)[source]: Use it.

count.

* guix/build/android-repo.scm (android-repo-fetch): Use parallel-job-count
instead of hard-coding job count.

Follow-up to 3feb8464.

* guix/android-repo-download.scm (android-repo-fetch): Fix docstring.

* guix/ssh.scm (notify-transfer-progress): Do nothing when TOTAL is
zero.

Regression introduced in b03267df.
The (take files 20) is a leftover from testing session.

* guix/ssh.scm (send-files): Fix value for 'missing'.

* gnu/packages/lisp.scm (sbcl): Update to 2.0.8.

* gnu/packages/graphics.scm (ogre): Update to 1.12.6.

* gnu/packages/perl.scm (perl-pdf-api2): Update to 2.038.

* gnu/packages/perl.scm (perl-hash-merge): Update to 0.302.

* gnu/packages/perl.scm (perl-hash-merge)[native-inputs]: Add perl-clone
and perl-clone-pp.

* gnu/packages/mail.scm (sieve-connect): New public variable.

Fixes: <https://bugs.gnu.org/43112>.

* gnu/packages/games.scm (hedgewars)[arguments]: Set "haskell_flags"
in #:configure-flags to enable dynamic linking.

* gnu/packages/crates-io.scm (rust-aho-corasick-0.6)[arguments]: Don't
skip build.

* gnu/packages/package-management.scm (guix): Update to 20562265.

* gnu/packages/networking.scm (knockd): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/emacs-xyz.scm (emacs-calibredb): Update to 2.6.0.
[propagated-inputs]: removed emacs-org, because it's optional now.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/xml.scm: (xlsxio): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/scheme.scm: (gerbil): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/emacs.scm (emacs-next): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/chez.scm (chez-make-flags): Add 'chezversion'.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

* guix/ui.scm (install-locale): Add call to 'setlocale' in 'catch' handler.

* guix/store.scm (set-build-options): Change #:locale default value
to (setlocale LC_MESSAGES).

Fixes <https://bugs.gnu.org/43039>.
Reported by Adam Griffiths <adam.lw.griffiths@gmail.com>.

Previously, a client could lead 'guix substitute' to run in a non-UTF-8
locale, such as the "C" locale.  Consequently, 'guix substitute' would
now fail to decode UTF-8 file names such as those that appear in the
'nss-certs' package.

* guix/scripts/substitute.scm (guix-substitute): Set LC_MESSAGES, not LC_ALL.

When the store overlay is mounted, other processes such as kmscon, udev
and guix-daemon may open files from the store, preventing the
underlying install support from being umounted. See:
https://lists.gnu.org/archive/html/guix-devel/2018-12/msg00161.html.

To avoid this situation, mount the store overlay inside a container,
and run the installation from within that container.

* gnu/build/shepherd.scm (fork+exec-command/container): New procedure.
* gnu/services/base.scm (guix-shepherd-service): Support an optional PID
argument passed to the "start" method. If that argument is passed, ensure that
guix-daemon enters the given PID MNT namespace by using
fork+exec-command/container procedure.
* gnu/installer/final.scm (umount-cow-store): Remove it,
(install-system): run the installation from within a container.
* gnu/installer/newt/final.scm (run-install-shell): Remove the display hack.

We may want to run a container inside the MNT namespace, without jailing the
container. If RUN-CONTAINER is passed a null MOUNTS list, do not jail the
container.

* gnu/build/linux-container.scm (run-container): Do not call
MOUNT-FILE-SYSTEMS if MOUNTS list is empty.

Move the cow-store procedure from the service declaration in (gnu system
install) to (gnu build install), so that it can be called from within a
different context than Shepherd.

* gnu/build/install.scm (mount-cow-store, unmount-cow-store): New procedures.
* gnu/system/install.scm (make-cow-store): Remove it,
(cow-store-service-type): adapt it accordingly.

* gnu/packages/web-browsers.scm (nyxt): Update to 2-pre-release-1.

* guix/build/android-repo.scm: New file.
* guix/android-repo-download.scm: New file.
* Makefile.am (MODULES): Add them.

* gnu/packages/lisp-xyz.scm (sbcl-clack-handler-hunchentoot): New variable.

* gnu/packages/lisp-xyz.scm (cl-clack-handler-fcgi, sbcl-clack-handler-fcgi):
New variables.
(sbcl-clack): Extract revision and commit so that they can be factored with
sbcl-clack-handler-fcgi.

* gnu/packages/lisp-xyz.scm (cl-fastcgi, ecl-fastcgi, sbcl-fastcgi): New variables.

* gnu/packages/lisp-xyz.scm (sbcl-mito)[arguments]: Remove spurious comment,
this test is already removed a few lines below.

* gnu/packages/lisp-xyz.scm (sbcl-dbi): Update to 20200518.

* gnu/packages/lisp-xyz.scm (sbcl-cl-sqlite): Update to 0.2.1.

* gnu/packages/javascript.scm (js-filesaver)[arguments]: Add phase to
install unminified javascript file.

* gnu/packages/linux.scm (xfsprogs): Update to 5.7.0.

* gnu/packages/telephony.scm (osip): Update to 5.1.2.

* gnu/services/virtualization.scm (secret-service-operating-system): New
procedure.
(hurd-vm-disk-image): Use it to ensure a Childhurd always includes the
secret-service.
(%hurd-vm-operating-system): Remove secret-service.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

Fixes: https://issues.guix.gnu.org/43078

These options are already enabled in the kernel configs included in guix, but
might be missing from variants using a defconfig from the upstream kernel,
such as linux-libre-arm-generic and linux-libre-arm64-generic.

* gnu/packages/linux (%default-extra-linux-options): Enable
  CONFIG_CGROUP_FREEZER, CONFIG_BLK_CGROUP, CONFIG_CGROUP_WRITEBACK,
  CONFIG_CGROUP_SCHED, CONFIG_CGROUP_PIDS, CONFIG_CGROUP_FREEZER,
  CONFIG_CGROUP_DEVICE, CONFIG_CGROUP_CPUACCT, CONFIG_CGROUP_PERF,
  CONFIG_SOCK_CGROUP_DATA, CONFIG_BLK_CGROUP_IOCOST, CONFIG_CGROUP_NET_PRIO,
  CONFIG_CGROUP_NET_CLASSID, CONFIG_MEMCG, CONFIG_MEMCG_SWAP,
  CONFIG_MEMCG_KMEM, CONFIG_CPUSETS and CONFIG_PROC_PID_CPUSET.