From d77c75a98eb18f9c79d0e31d27973033e4e83d42 Mon Sep 17 00:00:00 2001
From: Emil Karlson <jekarlson@gmail.com>
Date: Fri, 8 Oct 2021 10:28:54 +0300
Subject: [PATCH] nixos/nix-daemon: Clarify daemonNiceLevel
The option doesn not currently do what some people expect,
clarify the limitations in documentation.
---
nixos/modules/services/misc/nix-daemon.nix | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/nixos/modules/services/misc/nix-daemon.nix b/nixos/modules/services/misc/nix-daemon.nix
index 1cf892e61c14..d5d2a7d8b878 100644
--- a/nixos/modules/services/misc/nix-daemon.nix
+++ b/nixos/modules/services/misc/nix-daemon.nix
@@ -189,7 +189,9 @@ in
default = 0;
description = ''
Nix daemon process priority. This priority propagates to build processes.
- 0 is the default Unix process priority, 19 is the lowest.
+ 0 is the default Unix process priority, 19 is the lowest. Note that nix
+ bypasses nix-daemon when running as root and this option does not have
+ any effect in such a case.
Please note that if used on a recent Linux kernel with group scheduling,
setting the nice level will only have an effect relative to other threads