graph: Add '--system'.

* guix/scripts/graph.scm (%options, show-help): Add '--system'.
(%default-options): Add 'system'.
(guix-graph): Pass #:system to 'run-with-store'.

1 files changed, 7 insertions, 0 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index cccf166d03..9a19eb89cd 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -7711,6 +7711,13 @@ This is useful to precisely refer to a package, as in this example:
 @example
 guix graph -e '(@@@@ (gnu packages commencement) gnu-make-final)'
 @end example
+
+@item --system=@var{system}
+@itemx -s @var{system}
+Display the graph for @var{system}---e.g., @code{i686-linux}.
+
+The package dependency graph is largely architecture-independent, but there
+are some architecture-dependent bits that this option allows you to visualize.
 @end table