fix(engines): correct engine detection on unix

The `current_exe` function doesn't return the
symlinked path on Unix, so the engine detection
was failing there. This commit fixes that by
using the 0th argument of the program to get
the path of the executable on Unix.

src/main.rs

@@ -137,6 +137,10 @@ impl<'a> MakeWriter<'a> for IndicatifWriter {
 
 async fn run() -> anyhow::Result<()> {
 	let cwd = std::env::current_dir().expect("failed to get current working directory");
+	// Unix doesn't return the symlinked path, so we need to get it from the 0 argument
+	#[cfg(unix)]
+	let current_exe = PathBuf::from(std::env::args_os().next().expect("argument 0 not set"));
+	#[cfg(not(unix))]
 	let current_exe = std::env::current_exe().expect("failed to get current executable path");
 	let exe_name = current_exe
 		.file_stem()