Add optional Wayland session (#66)

meson.build

@@ -15,3 +15,7 @@ subdir('xsessions')
 if get_option('systemd')
     subdir('systemd')
 endif
+
+if get_option('wayland')
+    subdir('wayland-sessions')
+endif

meson_options.txt

@@ -12,3 +12,6 @@ option('systemd', type: 'boolean', value: true,
 
 option('systemduserunitdir', type: 'string', value: '',
        description : 'Custom directory for systemd user units')
+
+option('wayland', type: 'boolean', value: false,
+       description: 'Install Wayland session')

session/meson.build

@@ -66,6 +66,24 @@ pantheon_session = configure_file(
   install_dir: join_paths(datadir, 'gnome-session', 'sessions')
 )
 
+if get_option('wayland')
+    wayland_session_components = [
+      'gala-wayland',
+      'gala-daemon',
+      gsd_components
+    ]
+
+    wayland_session_configuration = configuration_data()
+    wayland_session_configuration.set('SESSION_COMPONENTS', ';'.join(wayland_session_components))
+
+    configure_file(
+      input: 'pantheon-wayland.session.in',
+      output: '@BASENAME@',
+      configuration: wayland_session_configuration,
+      install_dir: datadir / 'gnome-session' / 'sessions'
+    )
+endif
+
 autostartdir = join_paths(get_option('sysconfdir'), 'xdg', 'autostart')
 
 gsd_dir = gsd_dep.get_pkgconfig_variable('prefix')

session/pantheon-wayland.session.in

@@ -0,0 +1,5 @@
+[GNOME Session]
+Name=Pantheon (Wayland)
+RequiredComponents=@SESSION_COMPONENTS@
+FallbackSession=pantheon
+DesktopName=Pantheon

wayland-sessions/meson.build

@@ -0,0 +1,4 @@
+install_data(
+    'pantheon-wayland.desktop',
+    install_dir: datadir / 'wayland-sessions'
+)

wayland-sessions/pantheon-wayland.desktop

@@ -0,0 +1,8 @@
+[Desktop Entry]
+Name=Pantheon (Wayland)
+Comment=This session provides elementary experience
+Exec=gnome-session --builtin --session=pantheon-wayland
+TryExec=io.elementary.wingpanel
+Icon=
+DesktopNames=Pantheon
+Type=Application