Invenio-REST is on PyPI so all you need is:
$ pip install invenio-restIf you want Cross-Origin Resource Sharing (CORS) support you need to either install Flask-CORS manually or simply use the extra requires directive like this:
$ pip install invenio-rest[cors]| REST_ENABLE_CORS | Set to True to enable Cross-Origin Resource
Sharing. Defaults to False. |
| REST_CORS_RESOURCES | Dictionary for configuring CORS for endpoints. See Flask-CORS for further details. |
Please also see Flask-Limiter and Flask-CORS for many more configuration options.