Run agl-compositor in system scope for QEMU+KVM demo image

To allow usefully depending on the native-shell-client "homescreen"
application from the systemd units running QEMU, tweak things to
drop the use of agl-session from the agl-kvm-demo-platform host
image.  The motivation for this is to have the VM guest start up
ordering work as expected, avoiding unnecessary delays from race
failures on boot.

Changes:
- Rework agl-kvm template to use conf/include/agl-kvm.inc include
  file to match other featurs and simplify development.
- Add include files for the host ("default" in BitBake) and guest
  (so agl-kvm-guest) multiconfigs to allow disabling the agl-demo
  feature in the host build, which disables agl-session.
- Update native-shell-client systemd unit to run at system scope
  and depend upon agl-compositor directly.
- Update agl-qemu-runner systemd template unit to depend directly
  on native-shell-client.

Note that a consequence of these changes is that building images
other than agl-kvm-demo-platform when the "agl-kvm" feature is used
will likely not yield the desired results.  Future work will
investigate avoiding this problem, or forcing explicit compatibility
errors to avoid user confusion.

Bug-AGL: SPEC-4618

Change-Id: I295caf2969c5f4179c93f1b57afa703f1a866457
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
(cherry picked from commit 94ee287730b16820003aece648e790923a9a5b79)

2 files changed, 9 insertions, 8 deletions

diff --git a/recipes-demo/native-shell-client/files/native-shell-client.service b/recipes-demo/native-shell-client/files/native-shell-client.service
index 4d77513a9..d7a2fe684 100644
--- a/recipes-demo/native-shell-client/files/native-shell-client.service
+++ b/recipes-demo/native-shell-client/files/native-shell-client.service
@@ -1,11 +1,12 @@
 [Unit]
-Requires=agl-compositor.service
-After=agl-compositor.service
+Requires=weston.service
+After=weston.service
 
 [Service]
 Type=simple
+Environment=XDG_RUNTIME_DIR=/run/user/200
 ExecStart=/usr/bin/native-shell-client
 Restart=on-failure
 
 [Install]
-WantedBy=agl-session.target
+WantedBy=multi-user.target
diff --git a/recipes-demo/native-shell-client/native-shell-client_agldemo.inc b/recipes-demo/native-shell-client/native-shell-client_agldemo.inc
index 5e2538ee3..4c1dc1012 100644
--- a/recipes-demo/native-shell-client/native-shell-client_agldemo.inc
+++ b/recipes-demo/native-shell-client/native-shell-client_agldemo.inc
@@ -2,12 +2,12 @@ FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
 
 SRC_URI += "file://native-shell-client.service"
 
+inherit systemd
+
+SYSTEMD_SERVICE:${PN} = "${BPN}.service"
+
 do_install:append() {
-    install -d ${D}${systemd_user_unitdir}/agl-session.target.wants
-    install -m0644 ${WORKDIR}/native-shell-client.service ${D}${systemd_user_unitdir}/native-shell-client.service
-    ln -s ../native-shell-client.service ${D}${systemd_user_unitdir}/agl-session.target.wants/native-shell-client.service
+    install -D -m 0644 ${WORKDIR}/native-shell-client.service ${D}${systemd_system_unitdir}/native-shell-client.service
 }
 
-FILES:${PN} += " ${systemd_user_unitdir}"
-
 RCONFLICTS:${PN} = "homescreen"