Thanks Corion.

I do already use the skip feature of Test::More in certain cases. Below is an example so that if a user isn't on a Pi, certain test files will skip. This prevents needless test failures on the CPAN:

if (! $ENV{PI_BOARD}){
    plan skip_all => "not on a pi board (PI_BOARD env var not set)\n";
}
[download]

I will give using exec a go.