Binary package “ghostscript-dbg” in ubuntu bionic

interpreter for the PostScript language and for PDF - Debug symbols

 GPL Ghostscript is used for PostScript/PDF preview and printing.
 Usually as a back-end to a program such as ghostview, it can display
 PostScript and PDF documents in an X11 environment.
 This package contains the debugging symbols for ghostscript,
 ghostscript-x, and libgs9.