>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #2829076. --> Reported by: [kim.pepper](https://www.drupal.org/user/370574) >>> <p>As discussed on Friday, here's the beginnings of a generic Nested Set library that could be used.</p> <p><a href="https://github.com/previousnext/tree">https://github.com/previousnext/tree</a></p> <p>Only some retrieval methods there so far. The complexity will be in the insert/update.</p>