From c1ae82f448b10b278dc77e02518775175b463a27 Mon Sep 17 00:00:00 2001
From: 5aaee9 <7685264+5aaee9@users.noreply.github.com>
Date: Thu, 26 Oct 2023 18:34:19 +0800
Subject: [PATCH] nixos/systemd: fix make unit failed when unit too large

---
 nixos/lib/systemd-lib.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/nixos/lib/systemd-lib.nix b/nixos/lib/systemd-lib.nix
index 5669aae0bc19..fc95ab01289f 100644
--- a/nixos/lib/systemd-lib.nix
+++ b/nixos/lib/systemd-lib.nix
@@ -21,11 +21,12 @@ in rec {
         { preferLocalBuild = true;
           allowSubstitutes = false;
           inherit (unit) text;
+          passAsFile = [ "text" ];
         }
         ''
           name=${shellEscape name}
           mkdir -p "$out/$(dirname -- "$name")"
-          echo -n "$text" > "$out/$name"
+          mv "$textPath" "$out/$name"
         ''
     else
       pkgs.runCommand "unit-${mkPathSafeName name}-disabled"