At the bottom of the graph, we see all the implicit inputs of
     GNU-BUILD-SYSTEM (*note ‘gnu-build-system’: Build Systems.).

     Now, note that the dependencies of those implicit inputs—that is,
     the “bootstrap dependencies” (*note Bootstrapping::)—are not shown
     here, for conciseness.

‘bag’
     Similar to ‘bag-emerged’, but this time including all the bootstrap
     dependencies.

‘derivations’
     This is the most detailed representation: It shows the DAG of
     derivations (*note Derivations::) and plain store items.  Compared
     to the above representation, many additional nodes are visible,
     including builds scripts, patches, Guile modules, etc.

   All the above types correspond to _build-time dependencies_.  The
following graph type represents the _run-time dependencies_:

‘references’
     This is the graph of “references” of a package output, as returned
     by ‘guix gc --references’ (*note Invoking guix gc::).

     If the given package output is not available in the store, ‘guix
     graph’ attempts to obtain dependency information from substitutes.

   The available options are the following:

‘--type=TYPE’
‘-t TYPE’
     Produce a graph output of TYPE, where TYPE must be one of the
     values listed above.

‘--list-types’
     List the supported graph types.