| mod/modcache | Package modcache provides a file-based cache for modules. |
| mod/modconfig | Package modconfig provides access to the standard CUE module configuration, including registry access and authorization. |
| mod/modfile | Package modfile provides functionality for reading and parsing the CUE module file, cue.mod/module.cue. |
| mod/modregistry | Package modregistry provides functionality for reading and writing CUE modules from an OCI registry. |
| mod/module | Package module defines the Version type along with support code. |
| mod/modzip | Package modzip provides functions for creating and extracting module zip files. |