libxdg-basedir-dev 1.2.0-2 (s390x binary) in ubuntu lunar

 The XDG Base Directory Specification defines where should user files be
 looked for by defining one or more base directories relative in with they
 should be located.
 .
 This library implements functions to list the directories according to the
 specification and provides a few higher-level functions.
 .
 This package contains the library headers and documentation for developers.