a little fix

console-api/src/app.service.ts

@@ -226,8 +226,15 @@ export class AppService extends ConsoleLogger {
       .orderBy('latestBuild.id', 'DESC')
       .take(this.packageVersionPreserveCount);
 
-    query.andWhere(`unusedBuild.id not in ${subQuery.getQuery()}`);
-    this.packageReferenceSubQuery(query);
+    const packageReferenceQuery = query
+      .subQuery()
+      .select('referencingArchive.id')
+      .from(Archive, 'referencingArchive')
+      .where('referencingArchive.path = archive.path')
+      .andWhere(`referencingArchive.buildId not in ${subQuery.getQuery()}`);
+
+    query.andWhere(`unusedBuild.id not in ${subQuery.getQuery()}`).andWhere(`not exists ${packageReferenceQuery.getQuery()}`);
+    this.log(`SQL: ${query.getQueryAndParameters()}`);
     return (await query.getRawMany()).map((s) => `${s.pathToPurge}.tar.gz` as string);
   }