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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Well the repository is here: https://github.com/flutter/packages.git but that includes all the packages. I think you can do a sparse checkout: https://github.blog/2020-01-17-bring-your-monorepo-down-to-size-with-sparse-checkout/ to only take the directory you need.
But eventually when this project is finalized they'll put it on pub.dev, then you can just install it as a dependency.
NOTE:
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