guix-install.sh: Suggest running gpg as root.

The original example regularly prevented new users from installing Guix
at all.

* etc/guix-install.scm (chk_gpg_keyring): Suggest ‘sudo -i gpg’.

diff --git a/etc/guix-install.sh b/etc/guix-install.sh
index 54bd813..efcc3d8 100755 (executable)
--- a/etc/guix-install.sh
+++ b/etc/guix-install.sh
@@ -111,7 +111,7 @@ chk_gpg_keyring()
     # systems where gpg has never been used, causing errors and confusion.
     gpg --dry-run --list-keys ${OPENPGP_SIGNING_KEY_ID} >/dev/null 2>&1 || (
         _err "${ERR}Missing OpenPGP public key.  Fetch it with this command:"
-        echo "  wget https://sv.gnu.org/people/viewgpg.php?user_id=15145 -qO - | gpg --import -"
+        echo "  wget https://sv.gnu.org/people/viewgpg.php?user_id=15145 -qO - | sudo -i gpg --import -"
         exit 1
     )
 }