b241aedce6
Upstream itself says it is not actively developed: https://docear.org/2017/10/05/update-for-the-google-scholar-parser-library-to-fetch-metadata-for-pdf-files/ The sole Nixpkgs maintainer has not used Docear in 4 years: https://github.com/NixOS/nixpkgs/pull/353043#discussion_r1826528473