Here is patch for lib.pm, add to sub import 

if( ( caller )[1] =~ /\.pm$/ ){
    require Carp;
    Carp::croak( "use lib ... is for scripts not modules!");
}

[download]

In reply to Re^3: how to force Build test to load all modules from blib/lib first (use lib ... is for scripts not modules!) by Anonymous Monk
in thread how to force Build test to load all modules from blib/lib first by rbroberts

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