Perl::Critic::Policy::TestingAndDebugging::RequirePortableShebang
Make sure the perl shebang line isn't platform-specific i.e. uses something like #!/usr/bin/perl instead of the cross-platform #! perl.
#!/usr/bin/perl
#! perl
To install Parrot::Op, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Parrot::Op
CPAN shell
perl -MCPAN -e shell install Parrot::Op
For more information on module installation, please visit the detailed CPAN module installation guide.