Binary package “capnproto” in ubuntu focal

tool for working with the Cap'n Proto data interchange format

 Similar to Protocol Buffers, Cap'n Proto is an efficient means of
 serializing structured data to be transferred across a network or
 written to disk. Users write a Cap'n Proto definition file that
 drives a code generator, which in turn emits C++ code for encoding &
 decoding messages in the Cap'n Proto format.
 .
 In addition to being extremely fast, Cap'n Proto also smooths over some
 of the rougher aspects of Protocol Buffers & introduces a number of new
 features to boot.
 .
 This package contains a small suite of tools for developing & maintaining
 your Cap'n Proto schema files, including a code generator for compiling
 your schema files to supported languages.