# Pastebin nCaAmU7e
MacBook-Pro-de-Fernando:rakudo fernando$ ./perl6 -e 'sub bla($*A) {}; say &bla.signature.params.head.usage-name'
A
MacBook-Pro-de-Fernando:rakudo fernando$ ./perl6 -e 'sub bla($A) {}; say &bla.signature.params.head.usage-name'
While looking for 'CORE.setting.moarvm': no such file or directory
   at gen/moar/ModuleLoader.nqp:257  (blib/Perl6/ModuleLoader.moarvm:)
 from gen/moar/ModuleLoader.nqp:247  (blib/Perl6/ModuleLoader.moarvm:load_setting)
 from src/Perl6/World.nqp:741  (blib/Perl6/World.moarvm:load_setting)
 from src/Perl6/World.nqp:518  (blib/Perl6/World.moarvm:loading_and_symbol_setup)
 from src/Perl6/Grammar.nqp:1232  (blib/Perl6/Grammar.moarvm:comp_unit)
 from src/Perl6/Grammar.nqp:533  (blib/Perl6/Grammar.moarvm:TOP)
 from gen/moar/stage2/QRegex.nqp:2330  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/QRegex.moarvm:parse)
 from gen/moar/stage2/NQPHLL.nqp:1881  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:parse)
 from gen/moar/stage2/NQPHLL.nqp:1797  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:execute_stage)
 from gen/moar/stage2/NQPHLL.nqp:1830  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:run)
 from gen/moar/stage2/NQPHLL.nqp:1833  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:)
 from gen/moar/stage2/NQPHLL.nqp:1819  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:compile)
 from gen/moar/stage2/NQPHLL.nqp:1519  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:eval)
 from gen/moar/stage2/NQPHLL.nqp:1644  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:)
 from gen/moar/stage2/NQPHLL.nqp:1699  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:command_eval)
 from src/Perl6/Compiler.nqp:42  (blib/Perl6/Compiler.moarvm:command_eval)
 from gen/moar/stage2/NQPHLL.nqp:1625  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:command_line)
 from gen/moar/main.nqp:47  (/Users/fernando/Documents/Projects/rakudo/perl6.moarvm:MAIN)
 from gen/moar/main.nqp:38  (/Users/fernando/Documents/Projects/rakudo/perl6.moarvm:<mainline>)
 from <unknown>:1  (/Users/fernando/Documents/Projects/rakudo/perl6.moarvm:<main>)
 from <unknown>:1  (/Users/fernando/Documents/Projects/rakudo/perl6.moarvm:<entry>)
MacBook-Pro-de-Fernando:rakudo fernando$ ./perl6 -e 'sub bla($*A) {}; say &bla.signature.params.head.usage-name'
While looking for 'CORE.setting.moarvm': no such file or directory
   at gen/moar/ModuleLoader.nqp:257  (blib/Perl6/ModuleLoader.moarvm:)
 from gen/moar/ModuleLoader.nqp:247  (blib/Perl6/ModuleLoader.moarvm:load_setting)
 from src/Perl6/World.nqp:741  (blib/Perl6/World.moarvm:load_setting)
 from src/Perl6/World.nqp:518  (blib/Perl6/World.moarvm:loading_and_symbol_setup)
 from src/Perl6/Grammar.nqp:1232  (blib/Perl6/Grammar.moarvm:comp_unit)
 from src/Perl6/Grammar.nqp:533  (blib/Perl6/Grammar.moarvm:TOP)
 from gen/moar/stage2/QRegex.nqp:2330  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/QRegex.moarvm:parse)
 from gen/moar/stage2/NQPHLL.nqp:1881  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:parse)
 from gen/moar/stage2/NQPHLL.nqp:1797  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:execute_stage)
 from gen/moar/stage2/NQPHLL.nqp:1830  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:run)
 from gen/moar/stage2/NQPHLL.nqp:1833  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:)
 from gen/moar/stage2/NQPHLL.nqp:1819  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:compile)
 from gen/moar/stage2/NQPHLL.nqp:1519  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:eval)
 from gen/moar/stage2/NQPHLL.nqp:1644  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:)
 from gen/moar/stage2/NQPHLL.nqp:1699  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:command_eval)
 from src/Perl6/Compiler.nqp:42  (blib/Perl6/Compiler.moarvm:command_eval)
 from gen/moar/stage2/NQPHLL.nqp:1625  (/Users/fernando/Documents/Projects/rakudo/install/share/nqp/lib/NQPHLL.moarvm:command_line)
 from gen/moar/main.nqp:47  (/Users/fernando/Documents/Projects/rakudo/perl6.moarvm:MAIN)
 from gen/moar/main.nqp:38  (/Users/fernando/Documents/Projects/rakudo/perl6.moarvm:<mainline>)
 from <unknown>:1  (/Users/fernando/Documents/Projects/rakudo/perl6.moarvm:<main>)
 from <unknown>:1  (/Users/fernando/Documents/Projects/rakudo/perl6.moarvm:<entry>)
MacBook-Pro-de-Fernando:rakudo fernando$