calibre-web/optional-requirements.txt

# GDrive Integration
google-api-python-client>=1.7.11,<2.42.0
gevent>20.6.0,<22.0.0
greenlet>=0.4.17,<1.2.0
httplib2>=0.9.2,<0.21.0
oauth2client>=4.0.0,<4.1.4
uritemplate>=3.0.0,<4.2.0
pyasn1-modules>=0.0.8,<0.3.0
pyasn1>=0.1.9,<0.5.0
PyDrive2>=1.3.1,<1.11.0
PyYAML>=3.12
rsa>=3.4.2,<4.9.0

# Gmail
google-auth-oauthlib>=0.4.3,<0.6.0
google-api-python-client>=1.7.11,<2.42.0

# goodreads
goodreads>=0.3.2,<0.4.0
python-Levenshtein>=0.12.0,<0.13.0

# ldap login
python-ldap>=3.0.0,<3.5.0
Flask-SimpleLDAP>=1.4.0,<1.5.0

# oauth
Flask-Dance>=2.0.0,<5.2.0
SQLAlchemy-Utils>=0.33.5,<0.39.0

# metadata extraction
rarfile>=3.2
scholarly>=1.2.0,<1.7
markdown2>=2.0.0,<2.5.0
html2text>=2020.1.16,<2022.1.1
python-dateutil>=2.1,<2.9.0
beautifulsoup4>=4.0.1,<4.11.0
cchardet>=2.0.0,<2.2.0

# Comics
natsort>=2.2.0,<8.2.0
comicapi>=2.2.0,<2.3.0

# Kobo integration
jsonschema>=3.2.0,<4.5.0