libgnatvsn8-dev 8.4.0-3ubuntu2 (arm64 binary) in ubuntu focal

 GNAT is a compiler for the Ada programming language. It produces optimized
 code on platforms supported by the GNU Compiler Collection (GCC).
 .
 The libgnatvsn library exports selected GNAT components for use in other
 packages, most notably ASIS tools. It is licensed under the GNAT-Modified
 GPL, allowing to link proprietary programs with it.
 .
 This package contains the development files and static library.