isc-dhcp has been unmaintained since 2022.  This is a follow-up to commit
3e713ae41c73b352fad4830b23721ee07935c512.

* doc/guix.texi (Keyboard Layout and Networking and Partitioning): Adjust
example.
* etc/manifests/cross-compile.scm (%system-packages)
* etc/manifests/release-desktop.scm (%desktop-packages)
* etc/manifests/release-minimal.scm (%system-packages): Replace "isc-dhcp"
with "dhcpcd".
* gnu/system.scm (%base-packages-networking): Likewise.
* gnu/tests/install.scm (%simple-installation-script)
(%extlinux-gpt-installation-script)
(%simple-installation-script-for-/dev/vda)
(%separate-store-installation-script)
(%extra-encrypted-packages): Likewise.

This reverts commit a7db92d9b389cbe565395523882c34c6eff2c21a, this time with
the more careful command, to avoid a world rebuild:

grep -rl --exclude-dir=build --exclude-dir=patches --exclude=ld-wrapper.in \
  --exclude=sitecustomize.py --exclude=guix-emacs.el maxim.cournoyer@gmail.com |
  xargs sed -i 's/maxim.cournoyer@gmail.com/maxim@guixotic.coop/g'

Change-Id: I0871f5cf9ace79e34e78e24154d0da6ea95a3a91

This reverts commit d0d87a744d724b7e7d5ac013c586039652087bb3. Oops! This
caused a world rebuild.

Change-Id: I25fff644b2b61d0ee93d69b457b04c72b5b74d15

The change was automated via:

  git grep -l maxim.cournoyer@gmail.com |
    xargs sed -i 's/maxim.cournoyer@gmail.com/maxim@guixotic.coop/g'

* .mailmap: New entry.

Change-Id: Iaa88b1e51c94159c49138fb43910badb990eb169

* gnu/build/activation.scm (activation-script): Ensure /var/run existence.
* gnu/build/install.scm (evaluate-populate-directive)
[directives]: Remove directory /run.

Change-Id: I19ca8e7605c0cff598ab89077a94e20390ba27b0
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/services.scm (activation-script): Ensure /var/run existence.
* gnu/build/install.scm (evaluate-populate-directive)
[directives]: Remove directory /var/run.

Change-Id: I5fb93d33b6b1f045f1e5ba206b9b0b74b5184260
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

Possibly fixes <https://issues.guix.gnu.org/59884>.

* gnu/build/install.scm (umount*): New procedure.
(unmount-cow-store): Use it instead of 'umount'.

* gnu/build/install.scm (evaluate-populate-directive): By default, error when
the target of a symlink doesn't exist.  Always ensure TARGET ends with "/".
(populate-root-file-system): Call evaluate-populate-directive with
 #:error-on-dangling-symlink #t and add comment.

Until now deduplication was performed as an additional pass after
copying files, which involve re-traversing all the files that had just
been copied.

* guix/store/deduplication.scm (copy-file/deduplicate): New procedure.
* tests/store-deduplication.scm ("copy-file/deduplicate"): New test.
* guix/build/store-copy.scm (populate-store): Add #:deduplicate?
parameter and honor it.
* tests/gexp.scm ("gexp->derivation, store copy"): Pass #:deduplicate? #f
to 'populate-store'.
* gnu/build/image.scm (initialize-root-partition): Pass #:deduplicate?
to 'populate-store'.  Pass #:deduplicate? #f to 'register-closure'.
* gnu/build/vm.scm (root-partition-initializer): Likewise.
* gnu/build/install.scm (populate-single-profile-directory): Pass
 #:deduplicate? #f to 'populate-store'.
* gnu/build/linux-initrd.scm (build-initrd): Likewise.
* guix/scripts/pack.scm (self-contained-tarball)[import-module?]: New
procedure.
[build]: Pass it as an argument to 'source-module-closure'.
* guix/scripts/pack.scm (squashfs-image)[build]: Wrap in
'with-extensions'.
* gnu/system/linux-initrd.scm (expression->initrd)[import-module?]: New
procedure.
[builder]: Pass it to 'source-module-closure'.
* gnu/system/install.scm (cow-store-service-type)[import-module?]: New
procedure.  Pass it to 'source-module-closure'.

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.