feat: add requirement to debug output

src/solver/mod.rs

@@ -608,15 +608,16 @@ impl<VS: VersionSet, N: PackageName + Display, D: DependencyProvider<VS, N>> Sol
             }
         }
 
-        if let Some((count, (candidate, solvable_id, _clause_id))) = best_decision {
+        if let Some((count, (candidate, _solvable_id, clause_id))) = best_decision {
             tracing::info!(
-                "deciding to assign {} with {} candidates (required by {})",
+                "deciding to assign {}, ({:?}, {} possible candidates)",
                 candidate.display(self.pool()),
+                self.clauses[clause_id].debug(self.pool()),
                 count,
-                solvable_id.display(self.pool())
             );
         }
 
+
         // Could not find a requirement that needs satisfying.
         best_decision.map(|d| d.1)
     }
@@ -644,6 +645,7 @@ impl<VS: VersionSet, N: PackageName + Display, D: DependencyProvider<VS, N>> Sol
         tracing::info!(
             "╤══ Install {} at level {level} (required by {})",
             solvable.display(self.pool()),
+
             required_by.display(self.pool()),
         );
 
@@ -669,10 +671,10 @@ impl<VS: VersionSet, N: PackageName + Display, D: DependencyProvider<VS, N>> Sol
                     return Err(UnsolvableOrCancelled::Cancelled(value));
                 }
                 Err(PropagationError::Conflict(
-                    conflicting_solvable,
-                    attempted_value,
-                    conflicting_clause,
-                )) => {
+                        conflicting_solvable,
+                        attempted_value,
+                        conflicting_clause,
+                    )) => {
                     level = self.learn_from_conflict(
                         level,
                         conflicting_solvable,