Change typeof Args::targets to Option<Vec<String>> (rust-lang#327)

* Change typeof `Args::targets` to `Option<Vec<String>>`

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

crates/bin/src/args.rs

@@ -60,7 +60,7 @@ pub struct Args {
         long,
         value_name = "TRIPLE"
     )]
-    pub targets: Option<String>,
+    pub targets: Option<Vec<String>>,
 
     /// Override Cargo.toml package manifest path.
     ///

crates/bin/src/entry.rs

@@ -29,7 +29,7 @@ pub async fn install_crates(mut args: Args, jobserver_client: LazyJobserverClien
     };
 
     // Launch target detection
-    let desired_targets = get_desired_targets(args.targets.as_deref());
+    let desired_targets = get_desired_targets(args.targets.take());
 
     // Initialize reqwest client
     let client = create_reqwest_client(args.secure, args.min_tls_version.map(|v| v.into()))?;

crates/detect-targets/src/desired_targets.rs

@@ -50,9 +50,9 @@ impl DesiredTargets {
 /// Since `detect_targets` internally spawns a process and wait for it,
 /// it's pretty costy, it is recommended to run this fn ASAP and
 /// reuse the result.
-pub fn get_desired_targets(opts_targets: Option<&str>) -> DesiredTargets {
+pub fn get_desired_targets(opts_targets: Option<Vec<String>>) -> DesiredTargets {
     if let Some(targets) = opts_targets {
-        DesiredTargets::initialized(targets.split(',').map(|t| t.to_string()).collect())
+        DesiredTargets::initialized(targets)
     } else {
         DesiredTargets::auto_detect()
     }

crates/detect-targets/src/lib.rs

@@ -35,7 +35,10 @@
 //! # async fn main() {
 //!
 //! assert_eq!(
-//!     get_desired_targets(Some("x86_64-apple-darwin,aarch64-apple-darwin")).get().await,
+//!     get_desired_targets(Some(vec![
+//!         "x86_64-apple-darwin".to_string(),
+//!         "aarch64-apple-darwin".to_string(),
+//!     ])).get().await,
 //!     &["x86_64-apple-darwin", "aarch64-apple-darwin"],
 //! );
 //! # }