libbrotli-dev 1.0.9-2build8 (riscv64 binary) in ubuntu mantic

 Brotli is a generic-purpose lossless compression algorithm
 that compresses data using a combination of a modern variant
 of the LZ77 algorithm, Huffman coding and 2nd order context modeling,
 with a compression ratio comparable to the best currently available
 general-purpose compression methods. It is similar in speed with
 deflate but offers more dense compression.
 .
 This package installs development files.