utilize rust-installer --prepared-only flag in bootstrap tarball

Signed-off-by: onur-ozkan <work@onurozkan.dev>

src/bootstrap/src/utils/tarball.rs

@@ -3,8 +3,8 @@ use std::{
     process::Command,
 };
 
-use crate::core::build_steps::dist::distdir;
 use crate::core::builder::Builder;
+use crate::core::{build_steps::dist::distdir, builder::Kind};
 use crate::utils::channel;
 use crate::utils::helpers::t;
 
@@ -239,6 +239,11 @@ impl<'a> Tarball<'a> {
                 .arg(&this.image_dir)
                 .arg(format!("--component-name={}", &component_name));
 
+            if this.builder.kind == Kind::Install {
+                // We don't want archiving and compression for `x install`
+                cmd.arg("--prepare-only");
+            }
+
             if let Some((dir, dirs)) = this.bulk_dirs.split_first() {
                 let mut arg = dir.as_os_str().to_os_string();
                 for dir in dirs {