perf: use exec in unix bin linkers

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### Performance
+- Use `exec` in Unix bin linking to reduce the number of processes by @daimond113
+
 ## [0.5.0-rc.16] - 2024-12-08
 ### Fixed
 - Do not require lib or bin exports if package exports scripts by @daimond113

src/cli/commands/install.rs

@@ -257,7 +257,7 @@ impl InstallCommand {
                                                 fs::write(
                                                     &bin_exec_file,
                                                     format!(r#"#!/bin/sh
-lune run "$(dirname "$0")/.impl/{alias}.luau" -- "$@""#
+exec lune run "$(dirname "$0")/.impl/{alias}.luau" -- "$@""#
                                                     ),
                                                 )
                                                     .await