prefer CancellationToken / Notify to channel

Cargo.lock

@@ -1208,6 +1208,7 @@ dependencies = [
  "tempfile",
  "thiserror",
  "tokio",
+ "tokio-util",
  "wayland-client",
  "wayland-protocols",
  "wayland-protocols-wlr",
@@ -2049,6 +2050,19 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "tokio-util"
+version = "0.7.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9cf6b47b3771c49ac75ad09a6162f53ad4b8088b76ac60e8ec1455b31a189fe1"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "futures-sink",
+ "pin-project-lite",
+ "tokio",
+]
+
 [[package]]
 name = "toml"
 version = "0.8.14"