To debug unexpected Nikola rebuilds:

1. In nikola.utils.config_changed._calc_digest, uncomment the line that says self._write_into_debug_db(digest, data)
2. Create a copy of your site source.
3. Run python step1_build_and_dumpdb.py. (It will delete cache/output/db, build the site twice, and write dumpdb to .py files)
4. Run python step2_analyze_py_files.py | tee analysis.txt. It will compare the two .py files, using cc_debug.sqlite3 and {first,second}_dump.py.
5. Compare the produced dictionaries. Note that you will probably need a character-level diff tool, https://prettydiff.com/ is pretty good as long as you change CSS for li.replace to word-break: break-all; white-space: pre-wrap;

Copyright © 2019-2021, Chris Warrick. Portions Copyright © Eduardo Nafuel Schettino and Doit Contributors. License of .py files is MIT (same as Nikola)