| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| github.com/open-policy-agent/opa/internal/semver | Package semver has been vendored from: https://github.com/coreos/go-semver/tree/e214231b295a8ea9479f11b70b35d5acf3556d9b/semver A number of the original functions of the package have been removed since they are not required for our built-ins. |
| github.com/open-policy-agent/opa/v1/ast | Package ast declares Rego syntax tree types and also includes a parser and compiler for preparing policies for execution in the policy engine. |
| os | Package os provides a platform-independent interface to operating system functionality. |