build: add systemd service

Author: axelf4

CMakeLists.txt

@@ -157,3 +157,9 @@ install(
 	DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/scalable/apps
 	RENAME org.quickshell.svg
 )
+
+configure_file(assets/quickshell.service.in quickshell.service)
+install(
+	FILES ${CMAKE_BINARY_DIR}/quickshell.service
+	DESTINATION lib/systemd/user
+)

assets/quickshell.service.in

@@ -0,0 +1,10 @@
+[Unit]
+Description=QtQuick-based Desktop Shell Toolkit
+PartOf=graphical-session.target
+Requisite=graphical-session.target
+After=graphical-session.target
+
+[Service]
+ExecStart=@CMAKE_INSTALL_BINDIR@/quickshell
+Slice=session.slice
+Restart=on-failure

default.nix

@@ -116,10 +116,12 @@
     dontUnpack = true;
     dontConfigure = true;
     dontBuild = true;
+    dontMoveSystemdUserUnits = true;
 
     installPhase = ''
-      mkdir -p $out
-      cp -r ${unwrapped}/* $out
+      cp -r ${unwrapped} $out
+      substituteInPlace $out/lib/systemd/user/quickshell.service \
+        --replace-fail ${unwrapped} $out
     '';
 
     passthru = {