Raku requires the 'v' in version for the 'use' program

hello.raku

#!/usr/bin/env raku

# The following `use` pragma requires the leading 'v' in the version specification, or you'll get 
# an error:
#
#    in Raku please use "v" prefix for pragma (e.g., "use v6;", "use v6.c;") instead
#
# The relevant documention page shows only examples with the 'v'
# https://docs.raku.org/language/pragmas

use v6.d;

say 'Hello, World!';

# Compare to perl, which requires the 'v' only if less than two components
# use v5.16;
# use 5.16.0;    # Equivalent
# use v5.16.0;   # Equivalent
# use 5.16;      # Error