- $success ||= system 'wget', '--output-document', $tarball, $info->{tarball};
- $success ||= system 'tar', 'fx', $tarball, '-C', $unpackdir, '--strip-components', 1;
+ $success ||= execute 'wget', '--output-document', $tarball, $info->{tarball};
+ $success ||= execute 'tar', 'fx', $tarball, '-C', $unpackdir, '--strip-components', 1;