From @zoffixznet

Consider this​:
<Zoffix> m​: use lib 'lib'; use lib 'lib'; use lib 'lib'; say @​*INC.grep(* eq 'file#lib').elems
<camelia> rakudo-moar : OUTPUT«3␤»

Each use lib includes an addition "lib" in @​*INC, despite that directory already being there.

The case is the same for perl6 -Ilib foo-bar.pl where foo-bar.pl has "use lib 'lib';" in the code.

This causes unwanted duplicates that create bugs in code that iterates over @​*INC. It is also conflictory with Perl 5's version of "use lib", whose one of the useful features is specifically that it does NOT cause duplicates in @​INC even if the same directory is "use lib"ed multiple times.

Cheers,
ZZ

From @zoffixznet

No longer relevant since @​*INC is gone.

@zoffixznet - Status changed from 'new' to 'rejected'