Call hc-pkg to register a package.
hc-pkg register {filename | -} [--user | --global | --package-conf]
Call hc-pkg to re-register a package.
Call hc-pkg to unregister a package
hc-pkg unregister [pkgid] [--user | --global | --package-conf]
Call hc-pkg to expose a package.
hc-pkg expose [pkgid] [--user | --global | --package-conf]