From 84d8b9a809ff4ece36c31dcec57966f3b34d20b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Na=C3=AFm=20Favier?= <n@monade.li>
Date: Thu, 22 Dec 2022 15:17:05 +0100
Subject: [PATCH] nixos/systemd: document what `scriptArgs` is for

---
 nixos/lib/systemd-unit-options.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixos/lib/systemd-unit-options.nix b/nixos/lib/systemd-unit-options.nix
index 44f26572a23b..9c7cb34f14b5 100644
--- a/nixos/lib/systemd-unit-options.nix
+++ b/nixos/lib/systemd-unit-options.nix
@@ -324,7 +324,11 @@ in rec {
       scriptArgs = mkOption {
         type = types.str;
         default = "";
-        description = lib.mdDoc "Arguments passed to the main process script.";
+        example = "%i";
+        description = lib.mdDoc ''
+          Arguments passed to the main process script.
+          Can contain specifiers (`%` placeholders expanded by systemd, see {manpage}`systemd.unit(5)`).
+        '';
       };
 
       preStart = mkOption {