Add an uninstall script (#21213)

Closes #14306

This looks at what #16660 did and install.sh script as a base for the
uninstall.sh script. The script is bundled with the cli by default
unless the cli/no-bundled-uninstall feature is selected which is done,
so package managers could build zed without bundling a useless feature
and increasing binary size.

I don't have capabilities to test this right now, so any help with that
is appreciated.

Release Notes:

- Added an uninstall script for Zed installations done via zed.dev. To
uninstall zed, run `zed --uninstall` via the CLI binary.

crates/cli/Cargo.toml

@@ -16,6 +16,10 @@ doctest = false
 name = "cli"
 path = "src/main.rs"
 
+[features]
+no-bundled-uninstall = []
+default = []
+
 [dependencies]
 anyhow.workspace = true
 clap.workspace = true

crates/cli/build.rs

@@ -0,0 +1,5 @@
+fn main() {
+    if std::env::var("ZED_UPDATE_EXPLANATION").is_ok() {
+        println!(r#"cargo:rustc-cfg=feature="no-bundled-uninstall""#);
+    }
+}

crates/cli/src/main.rs

@@ -59,6 +59,13 @@ struct Args {
     /// Run zed in dev-server mode
     #[arg(long)]
     dev_server_token: Option<String>,
+    /// Uninstall Zed from user system
+    #[cfg(all(
+        any(target_os = "linux", target_os = "macos"),
+        not(feature = "no-bundled-uninstall")
+    ))]
+    #[arg(long)]
+    uninstall: bool,
 }
 
 fn parse_path_with_position(argument_str: &str) -> anyhow::Result<String> {
@@ -119,6 +126,29 @@ fn main() -> Result<()> {
         return Ok(());
     }
 
+    #[cfg(all(
+        any(target_os = "linux", target_os = "macos"),
+        not(feature = "no-bundled-uninstall")
+    ))]
+    if args.uninstall {
+        static UNINSTALL_SCRIPT: &[u8] = include_bytes!("../../../script/uninstall.sh");
+
+        let tmp_dir = tempfile::tempdir()?;
+        let script_path = tmp_dir.path().join("uninstall.sh");
+        fs::write(&script_path, UNINSTALL_SCRIPT)?;
+
+        use std::os::unix::fs::PermissionsExt as _;
+        fs::set_permissions(&script_path, fs::Permissions::from_mode(0o755))?;
+
+        let status = std::process::Command::new("sh")
+            .arg(&script_path)
+            .env("ZED_CHANNEL", &*release_channel::RELEASE_CHANNEL_NAME)
+            .status()
+            .context("Failed to execute uninstall script")?;
+
+        std::process::exit(status.code().unwrap_or(1));
+    }
+
     let (server, server_name) =
         IpcOneShotServer::<IpcHandshake>::new().context("Handshake before Zed spawn")?;
     let url = format!("zed-cli://{server_name}");