✨ Add start-cosmic script; cosmic-session.target

src/main.rs

@@ -5,6 +5,7 @@ extern crate tracing;
 mod comp;
 mod generic;
 mod process;
+mod systemd;
 
 use async_signals::Signals;
 use color_eyre::{eyre::WrapErr, Result};
@@ -37,6 +38,9 @@ async fn main() -> Result<()> {
 	if let Err(err) = comp::run_compositor(token.child_token(), socket_rx, env_tx) {
 		error!("compositor errored: {:?}", err);
 	}
+	systemd::start_systemd_target()
+		.await
+		.wrap_err("failed to start systemd target")?;
 	let env_vars = env_rx
 		.await
 		.expect("failed to receive environmental variables")

src/systemd.rs

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
+use color_eyre::{
+	eyre::{eyre, WrapErr},
+	Result,
+};
+use tokio::process::Command;
+
+pub async fn start_systemd_target() -> Result<()> {
+	let output = Command::new("systemctl")
+		.arg("--user")
+		.arg("start")
+		.arg("cosmic-session.target")
+		.spawn()
+		.wrap_err("failed to start systemd target")?
+		.wait()
+		.await
+		.wrap_err("failed to wait for systemd target to start")?;
+
+	if output.success() {
+		Ok(())
+	} else {
+		Err(eyre!(
+			"failed to start systemd target: code {}",
+			output.code().unwrap_or(-1),
+		))
+	}
+}