Add systemd service (#45)

CMakeLists.txt

@@ -26,6 +26,7 @@ include_directories(
 set(CMAKE_CXX_STANDARD 23)
 add_compile_options(-Wall -Wextra -Wno-unused-parameter -Wno-unused-value
 	-Wno-missing-field-initializers -Wno-narrowing)
+configure_file(systemd/hypridle.service.in systemd/hypridle.service @ONLY)
 
 # dependencies
 message(STATUS "Checking deps...")
@@ -73,3 +74,4 @@ protocol("staging/ext-idle-notify/ext-idle-notify-v1.xml" "ext-idle-notify-v1" f
 
 # Installation
 install(TARGETS hypridle)
+install(FILES ${CMAKE_BINARY_DIR}/systemd/hypridle.service DESTINATION ${CMAKE_INSTALL_LIBDIR}/systemd/user)

README.md

@@ -38,17 +38,29 @@ will make those events ignored.
 
 ## Building & Installation
 
-Building:
+### Building:
 ```sh
 cmake --no-warn-unused-cli -DCMAKE_BUILD_TYPE:STRING=Release -S . -B ./build
 cmake --build ./build --config Release --target hypridle -j`nproc 2>/dev/null || getconf NPROCESSORS_CONF`
 ```
 
-Installation:
+### Installation:
 ```sh
 sudo cmake --install build
 ```
 
+### Usage:
+
+Hypridle should ideally be launched after logging in. This can be done by your compositor or by systemd.
+For example, for Hyprland, use the following in your `hyprland.conf`.
+```hyprlang
+exec-once = hypridle
+```
+If, instead, you want to have systemd do this for you, you'll just need to enable the service using
+```sh
+systemctl --user enable --now hypridle.service
+```
+
 ## Flags
 
 ```

systemd/hypridle.service.in

@@ -0,0 +1,14 @@
+[Unit]
+Description=Hyprland's idle daemon
+Documentation=https://wiki.hyprland.org/Hypr-Ecosystem/hypridle
+PartOf=graphical-session.target
+After=graphical-session.target
+ConditionEnvironment=WAYLAND_DISPLAY
+
+[Service]
+Type=simple
+ExecStart=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_BINDIR@/hypridle
+Restart=on-failure
+
+[Install]
+WantedBy=graphical-session.target