gistfile1.txt

#! perl

use warnings;
use strict;
my $perl6bin = shift @ARGV;
my $zefbin   = shift @ARGV;

my $exit = 0;

my $path_sep = "/";
$path_sep = "\\" if ( $^O eq 'MSWin32' );

my @module_paths;
while (<>) {
    next if /^\s*(#|$)/;
    my ($module) = /(\S+)/;
    push @module_paths, "./modules$path_sep$module";
}

exit system $perl6bin, $zefbin,
  '--/build-depends', '--/test-depends', '--/depends', 
  '--/p6c', '--/metacpan', '--/cpan',
  'install', @module_paths;

gistfile2.txt

#! perl

use warnings;
use strict;
my $perl6bin = shift @ARGV;
my $zefbin   = shift @ARGV;

my $exit = 0;

my $path_sep = "/";
$path_sep = "\\" if ( $^O eq 'MSWin32' );

my @module_paths;
while (<>) {
    next if /^\s*(#|$)/;
    my ($module) = /(\S+)/;
    push @module_paths, "./modules$path_sep$module";
}

# Alternatively test first without --force...
exit 255 if system $perl6bin, $zefbin,
  '--/build-depends', '--/test-depends', '--/depends', 
  '--/p6c', '--/metacpan', '--/cpan',
  'test', @module_paths;

# ... and install with --force if the tests passed
# (and skip testing again)
exit system $perl6bin, $zefbin,
  '--/build-depends', '--/test-depends', '--/depends', 
  '--/p6c', '--/metacpan', '--/cpan',
  '--force', '--/test', install', @module_paths;

# or if you prefer installing one by one
#foreach my $m (@module_paths) {
#  exit 255 if system $perl6bin, $zefbin,
#    '--/build-depends', '--/test-depends', '--/depends', 
#    '--/p6c', '--/metacpan', '--/cpan',
#     '--force', '--/test', 'install', $m;
#}