From 1df9a8752054e81f57444137da9c3664c7704de5 Mon Sep 17 00:00:00 2001
From: Simon Bruder <simon@sbruder.de>
Date: Sat, 20 Nov 2021 16:29:48 +0100
Subject: [PATCH] Make nix scheduling options compatible with 21.11

---
 modules/nix.nix | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/modules/nix.nix b/modules/nix.nix
index 28cf19c..8d07809 100644
--- a/modules/nix.nix
+++ b/modules/nix.nix
@@ -64,11 +64,15 @@ in
       keep-outputs = true
       keep-derivations = true
     '';
-
+  } // (if (builtins.compareVersions config.system.nixos.release "21.11" != -1) then {
     # Make nix build in background less noticeable
+    daemonCPUSchedPolicy = "batch";
+    daemonIOSchedPriority = 5; # 0-7
+  } else {
+    # TODO 21.11: remove
     daemonNiceLevel = 10;
     daemonIONiceLevel = 5; # 0-7
-  };
+  });
 
   nixpkgs.overlays = with inputs; [
     self.overlay