[nongnu] elpa/hyperdrive 43ddaf6cd4 30/31: Tidy: (h/gateway-process-type) Improve docstring

[ELPA Syncer]

branch: elpa/hyperdrive
commit 43ddaf6cd4d0a9c503028680cb8af088fd03bb91
Author: Joseph Turner <joseph@ushin.org>
Commit: Joseph Turner <joseph@ushin.org>

    Tidy: (h/gateway-process-type) Improve docstring
---
 hyperdrive-lib.el | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/hyperdrive-lib.el b/hyperdrive-lib.el
index c80914c5e8..36a30f0067 100644
--- a/hyperdrive-lib.el
+++ b/hyperdrive-lib.el
@@ -1403,7 +1403,15 @@ is the symbol `subprocess'."
   (process-live-p h/gateway-process))
 
 (defcustom h/gateway-process-type nil
-  "How to run the gateway process."
+  "How to run the gateway process.
+Value may be one of
+
+- nil             :: Autodetect
+- \\+`systemd'    :: systemd user-level service
+- \\+`subprocess' :: Emacs subprocess
+
+To customize the command run as a subprocess, see
+`hyperdrive-gateway-command'."
   ;; TODO: Can or should we use the :initialize function here?
   :set (lambda (option value)
          "Stop the gateway process before changing the type."