refresh: Add `--key-server' and `--gpg'.

* guix/scripts/refresh.scm (%options): Add `--key-server' and `--gpg'.
  (show-help): Update accordingly.
  (update-package): New procedure, formerly in `guix-refresh'.
  (guix-refresh): Use it.  Parameterize `%openpgp-key-server' and
  `%gpg-command'.

1 files changed, 13 insertions, 0 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index 9147f43b90..b14310f908 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -1313,6 +1313,19 @@ The command above specifically updates the @code{emacs} and
 @code{idutils} packages.  The @code{--select} option would have no
 effect in this case.
 
+The following options can be used to customize GnuPG operation:
+
+@table @code
+
+@item --key-server=@var{host}
+Use @var{host} as the OpenPGP key server when importing a public key.
+
+@item --gpg=@var{command}
+Use @var{command} as the GnuPG 2.x command.  @var{command} is searched
+for in @code{$PATH}.
+
+@end table
+
 
 @c *********************************************************************
 @node GNU Distribution