feat: custom debug impl for identifier

pkgr/src/package/identifier.rs

@@ -1,7 +1,9 @@
 use std::error::Error;
+use std::fmt::Formatter;
 use std::str::FromStr;
 
 use regex::Regex;
+use serde::Serializer;
 
 #[derive(Debug, Clone)]
 pub enum PackageIdentifierError {
@@ -22,13 +24,31 @@ impl std::fmt::Display for PackageIdentifierError {
 
 impl Error for PackageIdentifierError {}
 
-#[derive(Debug, Clone)]
+#[derive(Clone)]
 pub enum PackageIdentifier {
     PackageLocator(PackageLocator),
     URI(String),
     Path(String),
 }
 
+impl std::fmt::Debug for PackageIdentifier {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        if f.alternate() {
+            match self {
+                PackageIdentifier::PackageLocator(pl) => write!(f, "PackageLocator({:#?})", pl),
+                PackageIdentifier::URI(uri) => write!(f, "URI({:?})", uri),
+                PackageIdentifier::Path(path) => write!(f, "Path({:?})", path),
+            }
+        } else {
+            match self {
+                PackageIdentifier::PackageLocator(pl) => write!(f, "PL: {:?}", pl),
+                PackageIdentifier::URI(uri) => write!(f, "URI: {:?}", uri),
+                PackageIdentifier::Path(path) => write!(f, "Path: {:?}", path),
+            }
+        }
+    }
+}
+
 impl std::fmt::Display for PackageIdentifier {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         match self {