add systemd service

CMakeLists.txt

@@ -14,6 +14,8 @@ add_compile_definitions(HYPRSUNSET_VERSION="${VERSION}")
 
 message(STATUS "Configuring hyprsunset!")
 
+configure_file(systemd/hyprsunset.service.in systemd/hyprsunset.service @ONLY)
+
 # Get git info hash and branch
 execute_process(
   COMMAND git rev-parse --abbrev-ref HEAD
@@ -134,4 +136,7 @@ if(NOT DEFINED CMAKE_INSTALL_MANDIR)
     set(CMAKE_INSTALL_MANDIR "${CMAKE_INSTALL_PREFIX}/share/man")
 endif()
 
+include(GNUInstallDirs)
+
 install(TARGETS hyprsunset)
+install(FILES ${CMAKE_BINARY_DIR}/systemd/hyprsunset.service DESTINATION ${CMAKE_INSTALL_LIBDIR}/systemd/user)

systemd/hyprsunset.service.in

@@ -0,0 +1,16 @@
+[Unit]
+Description=An application to enable a blue-light filter on Hyprland.
+Documentation=https://wiki.hyprland.org/Hypr-Ecosystem/hyprsunset/
+PartOf=graphical-session.target
+Requires=graphical-session.target
+After=graphical-session.target
+ConditionEnvironment=WAYLAND_DISPLAY
+
+[Service]
+Type=simple
+ExecStart=@CMAKE_INSTALL_PREFIX@/bin/hyprsunset
+Slice=session.slice
+Restart=on-failure
+
+[Install]
+WantedBy=graphical-session.target