backport cinnamon-desktop changes, nightlight

Author: mtwebster

data/org.cinnamon.settings-daemon.plugins.color.gschema.xml.in.in

@@ -10,5 +10,35 @@
       <summary>The duration a printer profile is valid</summary>
       <description>This is the number of days after which the printer color profile is considered invalid.</description>
     </key>
+    <key name="night-light-enabled" type="b">
+      <default>false</default>
+      <summary>If the night light mode is enabled</summary>
+      <description>Night light mode changes the color temperature of your display when the sun has gone down or at preset times.</description>
+    </key>
+    <key name="night-light-temperature" type="u">
+      <default>2700</default>
+      <summary>Temperature of the display when enabled</summary>
+      <description>This temperature in Kelvin is used to modify the screen tones when night light mode is enabled. Higher values are bluer, lower redder.</description>
+    </key>
+    <key name="night-light-schedule-automatic" type="b">
+      <default>true</default>
+      <summary>Use the sunrise and sunset</summary>
+      <description>Calculate the sunrise and sunset times automatically, from the current location.</description>
+    </key>
+    <key name="night-light-schedule-from" type="d">
+      <default>20.00</default>
+      <summary>The start time</summary>
+      <description>When “night-light-schedule-automatic” is disabled, use this start time in hours from midnight.</description>
+    </key>
+    <key name="night-light-schedule-to" type="d">
+      <default>6.00</default>
+      <summary>The end time</summary>
+      <description>When “night-light-schedule-automatic” is disabled, use this end time in hours from midnight.</description>
+    </key>
+    <key name="night-light-last-coordinates" type="(dd)">
+      <default>(91,181)</default>
+      <summary>The last detected position</summary>
+      <description>When location services are available this represents the last detected location. The default value is an invalid value to ensure it is always updated at startup.</description>
+    </key>
   </schema>
 </schemalist>

meson.build

@@ -98,6 +98,8 @@ endif
 cc = meson.get_compiler('c')
 math = cc.find_library('m', required: false)
 
+has_timerfd_create = cc.has_function('timerfd_create')
+
 csd_conf = configuration_data()
 csd_conf.set_quoted('GTKBUILDERDIR', gtkbuilderdir)
 csd_conf.set_quoted('CINNAMON_SETTINGS_LOCALEDIR', localedir)
@@ -108,6 +110,7 @@ csd_conf.set_quoted('GETTEXT_PACKAGE', meson.project_name())
 csd_conf.set_quoted('LIBEXECDIR', join_paths(prefix, libexecdir))
 csd_conf.set_quoted('SYSCONFDIR', sysconfdir)
 csd_conf.set_quoted('LIBDIR', libdir)
+csd_conf.set10('HAVE_TIMERFD', has_timerfd_create)
 
 if gudev.found()
     cargs += '-DHAVE_GUDEV'