Fix being unable to add versioned dependency

src/commands/add.rs

@@ -147,8 +147,7 @@ impl AddCommand {
             bail!("No exported interfaces found in the component")
         };
 
-        let mut package_interface_map: HashMap<String, Vec<String>> = HashMap::new();
-        let mut selected_interfaces: Vec<String> = Vec::new();
+        let mut package_interface_map: HashMap<_, Vec<String>> = HashMap::new();
 
         // Map interfaces to their respective packages
         for (package_name, interface) in exported_interfaces {
@@ -165,6 +164,8 @@ impl AddCommand {
             &package_names,
         )?;
 
+        let mut selected_interfaces = Vec::new();
+
         for &package_idx in selected_package_indices.iter() {
             let package_name = &package_names[package_idx];
             let interfaces = package_interface_map.get(package_name).unwrap();
@@ -190,10 +191,19 @@ impl AddCommand {
             )?;
 
             if interface_count > 1 && selected_interface_idx == 0 {
-                selected_interfaces.push(package_name.clone());
+                selected_interfaces.push(package_name.to_string());
             } else {
                 let interface_name = &interface_options[selected_interface_idx];
-                selected_interfaces.push(format!("{}/{}", package_name, interface_name));
+                let full_itf_name = if let Some(version) = package_name.version.as_ref() {
+                    format!(
+                        "{ns}:{name}/{interface_name}@{version}",
+                        ns = package_name.namespace,
+                        name = package_name.name
+                    )
+                } else {
+                    format!("{package_name}/{interface_name}")
+                };
+                selected_interfaces.push(full_itf_name);
             }
         }
 
@@ -231,7 +241,7 @@ impl AddCommand {
 
         for interface in selected_interfaces {
             component.dependencies.inner.insert(
-                DependencyName::Package(DependencyPackageName::try_from(interface)?),
+                DependencyName::Package(DependencyPackageName::try_from(interface.clone())?),
                 component_dependency.clone(),
             );
         }

src/common/interact.rs

@@ -14,7 +14,10 @@ pub fn select_prompt(
     Ok(select.interact()?)
 }
 
-pub fn select_multiple_prompt(prompt: &str, selection_list: &[String]) -> Result<Vec<usize>> {
+pub fn select_multiple_prompt<T: ToString>(
+    prompt: &str,
+    selection_list: &[T],
+) -> Result<Vec<usize>> {
     Ok(MultiSelect::new()
         .with_prompt(prompt)
         .items(selection_list)

src/common/wit.rs

@@ -40,7 +40,7 @@ pub fn parse_component_bytes(bytes: Vec<u8>) -> Result<(Resolve, PackageId)> {
 pub fn get_exported_interfaces(
     resolve: &Resolve,
     world_id: wit_parser::WorldId,
-) -> Vec<(String, String)> {
+) -> Vec<(wit_parser::PackageName, String)> {
     resolve.worlds[world_id]
         .exports
         .iter()
@@ -49,11 +49,7 @@ pub fn get_exported_interfaces(
                 let i = &resolve.interfaces[*id];
                 let pkg_id = i.package.unwrap();
                 let pkg = &resolve.packages[pkg_id];
-                let mut pkg_name = format!("{}:{}", pkg.name.namespace, pkg.name.name);
-                if let Some(ver) = &pkg.name.version {
-                    pkg_name.push_str(&format!("@{}", ver));
-                }
-                Some((pkg_name, i.name.clone().unwrap_or_default()))
+                Some((pkg.name.clone(), i.name.clone().unwrap_or_default()))
             }
             _ => None,
         })