This is a python script that will allow you to extract entries from large bibliographies.
For example, if you're using cryptobib, it may take a few minutes to compile everything.
Not anymore! This script will take your biblatex bcf file and then extract the needed entries from larger bibfiles.
.PHONY: main.pdf
main.pdf: extracted_cryptobib.bib
./latexrun --bibtex-cmd=biber -Wall main.tex
# or latexmk, or just pdflatex a bunch of times...
latex.out/main.bcf:
mkdir -p latex.out
pdflatex -interaction=batchmode -output-directory=latex.out main
extracted_cryptobib.bib: latex.out/main.bcf cryptobib/crypto.bib
python3 extract_from_bibliography.py $^ > $@