pack_version(2). name(environ). version('2.0'). title('Demo package with C code, fetching the program environment'). keywords([demo, c, environment]). author( 'Jan Wielemaker', 'jan@swi-prolog.org' ). home('https://www.swi-prolog.org/howto/ForeignPack.html' ). download('https://github.com/JanWielemaker/environ.git').