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authorLudovic Courtès <ludo@gnu.org>2019-11-07 18:15:55 +0100
committerLudovic Courtès <ludo@gnu.org>2019-11-07 18:39:55 +0100
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graph: Support package transformation options.
* guix/scripts/graph.scm (%options): Append %TRANSFORMATION-OPTIONS. (show-help): Call 'show-transformation-options-help'. (guix-graph): Call 'options->transformation' and use it. * tests/guix-graph.sh: Add test. * doc/guix.texi (Invoking guix graph): Document it.
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@@ -9907,7 +9907,18 @@ The package dependency graph is largely architecture-independent, but there
are some architecture-dependent bits that this option allows you to visualize.
@end table
+On top of that, @command{guix graph} supports all the usual package
+transformation options (@pxref{Package Transformation Options}). This
+makes it easy to view the effect of a graph-rewriting transformation
+such as @option{--with-input}. For example, the command below outputs
+the graph of @code{git} once @code{openssl} has been replaced by
+@code{libressl} everywhere in the graph:
+@example
+guix graph git --with-input=openssl=libressl
+@end example
+
+So many possibilities, so much fun!
@node Invoking guix publish
@section Invoking @command{guix publish}