SO: What is the best way to flush precompiled perl6 modules?

# Each click of Run button below starts with a completely fresh setup of directories, files, etc.

run 'echo', 'first run'; run 'perl6', 'main-path1.pl6'; # Run prog shown in 2nd tab

run 'echo', 'cp libs to path2'; run 'cp', '-r', '-p', 'path1', 'path2'; # Copy .precomp dir as well

run 'echo', 'run using path2'; run 'perl6', 'main-path2.pl6'; # Run prog shown in 3rd tab

run 'echo', 'edit path2/lib1'; spurt 'path2/lib1.pm6', 'unit module lib1; use lib2; our $value = $lib2::value;';

run 'echo', 'edit path2/lib2'; spurt 'path2/lib2.pm6', 'unit module lib2; our $value = 2;';

run 'echo', 'run path2 again'; run 'perl6', 'main-path2.pl6';

# As is, running this yields `1`, `1`, and `2` -- as expected.

# But commenting out 'edit lib1' line yields `1`, `1`, `1` -- the "edit" of lib2 has no effect.

# The 'edit lib1' line spurts exactly the same as the existing lib1 content.