maint: Replace remaining usages of isc-dhcp with dhcpcd.

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.

3 files changed, 7 insertions, 7 deletions

diff --git a/gnu/build/install.scm b/gnu/build/install.scm
index d0717f204af..58ee77d1831 100644
--- a/gnu/build/install.scm
+++ b/gnu/build/install.scm
@@ -134,7 +134,7 @@ STORE."
     (directory "/var/log")                          ; for shepherd
     (directory "/var/guix/gcroots")
     (directory "/var/empty")                        ; for no-login accounts
-    (directory "/var/db")                           ; for dhclient, etc.
+    (directory "/var/db")                           ; for dhcpcd, etc.
     (directory "/mnt")
     (directory "/var/guix/profiles/per-user/root" 0 0)
 
diff --git a/gnu/system.scm b/gnu/system.scm
index d2db4ea8f52..14b4cab4b22 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -977,7 +977,7 @@ of PROVENANCE-SERVICE-TYPE to its services."
 
 (define %base-packages-networking
   ;; Default set of networking packages.
-  (list inetutils isc-dhcp
+  (list inetutils dhcpcd
         iproute
         wget
         nss-certs
diff --git a/gnu/tests/install.scm b/gnu/tests/install.scm
index 25e4cc85a05..91ab59ce8d2 100644
--- a/gnu/tests/install.scm
+++ b/gnu/tests/install.scm
@@ -170,7 +170,7 @@ set -e -x
 guix --version
 
 export GUIX_BUILD_OPTIONS=--no-grafts
-guix build isc-dhcp
+guix build dhcpcd
 parted --script /dev/vdb mklabel gpt \\
   mkpart primary ext2 1M 3M \\
   mkpart primary ext2 3M 2G \\
@@ -196,7 +196,7 @@ set -e -x
 guix --version
 
 export GUIX_BUILD_OPTIONS=--no-grafts
-guix build isc-dhcp
+guix build dhcpcd
 parted --script /dev/vdb mklabel gpt \\
   mkpart primary ext2 1M 2G \\
   set 1 legacy_boot on
@@ -468,7 +468,7 @@ set -e -x
 guix --version
 
 export GUIX_BUILD_OPTIONS=--no-grafts
-guix build isc-dhcp
+guix build dhcpcd
 parted --script /dev/vda mklabel gpt \\
   mkpart primary ext2 1M 3M \\
   mkpart primary ext2 3M 2G \\
@@ -597,7 +597,7 @@ set -e -x
 guix --version
 
 export GUIX_BUILD_OPTIONS=--no-grafts
-guix build isc-dhcp
+guix build dhcpcd
 parted --script /dev/vdb mklabel gpt \\
   mkpart primary ext2 1M 3M \\
   mkpart primary ext2 3M 400M \\
@@ -1974,7 +1974,7 @@ build (current-guix) and then store a couple of full system images.")
 
 (define %extra-encrypted-packages
   ;; Packages needed when installing with an encrypted root.
-  (list isc-dhcp
+  (list dhcpcd
         lvm2-static cryptsetup-static e2fsck/static
         loadkeys-static grub-efi fatfsck/static dosfstools))