import: elpa: Add recursive import.

* doc/guix.texi (Invoking guix import): Document elpa recursive import.
* guix/import/elpa.scm (elpa-package->sexp): Return package and
dependencies values.
(elpa-guix-name, elpa-recursive-import): New procedures.
* guix/scripts/import/elpa.scm (show-help, %options): Add recursive
option.
(guix-import-elpa): Use 'elpa-recursive-import'.

1 files changed, 6 insertions, 0 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index e1353842e4..1183565ad3 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -6586,6 +6586,12 @@ signatures,, emacs, The GNU Emacs Manual}).
 @uref{http://melpa.org/packages, MELPA}, selected by the @code{melpa}
 identifier.
 @end itemize
+
+@item --recursive
+@itemx -r
+Traverse the dependency graph of the given upstream package recursively
+and generate package expressions for all those packages that are not yet
+in Guix.
 @end table
 
 @item crate