Install nltk the normal way.
#!/bin/bash
pip install -r requirements.txt
-# Temporary fix to the build whilst NLTK sort stuff out. TODO(Mark): revert this.
-python -m nltk.downloader -u https://pastebin.com/raw/D3TBY4Mj punkt
-# python -m nltk.downloader punkt
+python -m nltk.downloader punkt
spacy download en_core_web_sm
# only install test requirements if explicitly specified
