ruby-google-protobuf - 3.6.1.3-2+deb10u1 main

Protocol Buffers are Google's data interchange format.
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This library contains the Ruby extension that implements Protocol Buffers
functionality in Ruby.
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The Ruby extension makes use of generated Ruby code that defines message and
enum types in a Ruby DSL. You may write definitions in this DSL directly, but
we recommend using protoc's Ruby generation support with .proto files. The
build process in this directory only installs the extension; you need to
install protoc as well to have Ruby code generation functionality.