preset: override networkd in desktop preset

In the desktop profile network-manager manages all interfaces,
and networkd manages none, so systemd-networkd-wait-online.service
will timeout and fail as no interfaces are available for networkd,
breaking units waiting for network-online.target.
Add a higher priority preset for the desktop profile and disable
networkd by default.

Author: bluca

mkosi.extra/usr/lib/systemd/system-preset/10-particleos.preset

@@ -1,6 +1,9 @@
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 # Make sure we have networking available.
+# Note that this gets overridden in the desktop preset as networkd
+# has no interfaces to manage and so this will fail on boot
+# and block other units waiting on network-online.target
 enable systemd-networkd.service
 enable systemd-networkd.socket
 enable systemd-networkd-varlink.socket

mkosi.profiles/desktop/mkosi.extra/usr/lib/systemd/system-preset/05-particleos-desktop.preset

@@ -0,0 +1,8 @@
+# Given network-manager is enabled in desktop builds and
+# takes over the interfaces, networkd-wait-online will be
+# stuck and fail, breaking units waiting on the network
+# on boot, as networkd manages no interface
+disable systemd-networkd.service
+disable systemd-networkd.socket
+disable systemd-networkd-varlink.socket
+disable systemd-networkd-wait-online.service