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chalk
An implementation and definition of the Rust trait system using a PROLOG-like logic solver (by rust-lang)
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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.
https://github.com/espressif/llvm-project/issues/4 is a good example why updating llvm isn't easy and takes a lot of time.
IIRC gccrs is doing its own type solver. Meaning besides having to keep up with rust-lang syntax, work similar to this 3000 commit project has to be implemented.
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