fix: expand extras self-refs, drop PEP 517 fallback

crates/pixi_core/src/lock_file/satisfiability/errors.rs

@@ -248,17 +248,25 @@ pub enum LocalMetadataMismatch {
     },
 }
 
-/// Formats a list of requirements, showing only the first 3 names.
+/// Render up to 3 distinct entries (`name` or `name[extras]`) and
+/// `... and N more` for the rest.
 fn format_requirements(reqs: &[pep508_rs::Requirement]) -> String {
     const MAX_DISPLAY: usize = 3;
-    let names: Vec<_> = reqs
+    let mut seen = HashSet::new();
+    let unique: Vec<String> = reqs
         .iter()
-        .take(MAX_DISPLAY)
-        .map(|r| r.name.to_string())
+        .map(|r| {
+            if r.extras.is_empty() {
+                r.name.to_string()
+            } else {
+                format!("{}[{}]", r.name, r.extras.iter().format(","))
+            }
+        })
+        .filter(|name| seen.insert(name.clone()))
         .collect();
-    let formatted = names.join(", ");
-    if reqs.len() > MAX_DISPLAY {
-        format!("{}, ... and {} more", formatted, reqs.len() - MAX_DISPLAY)
+    let formatted = unique.iter().take(MAX_DISPLAY).format(", ").to_string();
+    if unique.len() > MAX_DISPLAY {
+        format!("{}, ... and {} more", formatted, unique.len() - MAX_DISPLAY)
     } else {
         formatted
     }