From 5339721b50d549b3f05dee047d14a8be258572fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?m=C3=BCde?= <git@darkest.space>
Date: Sun, 20 Sep 2026 14:58:59 +0200
Subject: [PATCH] throttle nix daemon on high mem

---
 nixosConfigurations/muede-lpt2/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/nixosConfigurations/muede-lpt2/default.nix b/nixosConfigurations/muede-lpt2/default.nix
index 59a3eef..492afcd 100644
--- a/nixosConfigurations/muede-lpt2/default.nix
+++ b/nixosConfigurations/muede-lpt2/default.nix
@@ -29,6 +29,13 @@
         "i686-linux"
       ];
 
+      # Global default (nixosModules/distributed-builds.nix) is MemoryMax=90%,
+      # which isn't tight enough on this machine's 31GiB to avoid OOM.
+      systemd.services.nix-daemon.serviceConfig = {
+        MemoryHigh = "60%";
+        MemoryMax = lib.mkForce "80%";
+      };
+
       services.xserver.xkb = {
         # Configure keymap in X11
         layout = "de";