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-rw-r--r--nixos/lib/systemd-unit-options.nix6
1 files changed, 5 insertions, 1 deletions
diff --git a/nixos/lib/systemd-unit-options.nix b/nixos/lib/systemd-unit-options.nix
index 44f26572a23ba..9c7cb34f14b57 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 {