From 4bb8dd864cf5077018327d6f55058b87def03d45 Mon Sep 17 00:00:00 2001
From: polwex <polwex@sortug.com>
Date: Mon, 20 Oct 2025 09:08:14 +0700
Subject: no moar hanging

---
 hosts/base.nix                       | 10 ++++++++++
 hosts/dev.nix                        | 18 ++++++++++++++++++
 hosts/local/gui.nix                  |  3 +++
 hosts/local/master/configuration.nix | 21 ++++++++++++++++++---
 hosts/local/nvidia.nix               |  7 +++++++
 5 files changed, 56 insertions(+), 3 deletions(-)
 create mode 100644 hosts/dev.nix

(limited to 'hosts')

diff --git a/hosts/base.nix b/hosts/base.nix
index 5a65df7..054a967 100644
--- a/hosts/base.nix
+++ b/hosts/base.nix
@@ -39,7 +39,17 @@
       keep-outputs = true;
       keep-derivations = true;
       trusted-users = ["root" "y"];
+      max-jobs = 2;
+      cores = 16;
     };
+    # buildMachines = [{
+    #   hostName = "builder.lan";
+    #   system = "x86_64-linux";
+    #   protocol = "ssh";
+    #   supportedFeatures = ["kvm" "big-parallel" "cuda"];
+
+    # }];
+    # distributedBuilds = true;
   };
   programs.nh = {
     enable = true;
diff --git a/hosts/dev.nix b/hosts/dev.nix
new file mode 100644
index 0000000..ef6c761
--- /dev/null
+++ b/hosts/dev.nix
@@ -0,0 +1,18 @@
+{
+  inputs,
+  pkgs,
+  lib,
+  config,
+  ...
+}: {
+  # https://nixos.wiki/wiki/CCache
+
+  programs.ccache = {
+    enable = true;
+  };
+  nix.settings.extra-sandbox-paths = [config.programs.ccache.cacheDir];
+
+  # environment.systemPackages = with pkgs;
+  #   [
+  #   ];
+}
diff --git a/hosts/local/gui.nix b/hosts/local/gui.nix
index b22f5bc..59676c1 100644
--- a/hosts/local/gui.nix
+++ b/hosts/local/gui.nix
@@ -51,5 +51,8 @@
     signal-desktop
     telegram-desktop
     electrum
+    # xdg whatever bs
+    glib # gio
+    desktop-file-utils
   ];
 }
diff --git a/hosts/local/master/configuration.nix b/hosts/local/master/configuration.nix
index 7b883d3..cad65c8 100644
--- a/hosts/local/master/configuration.nix
+++ b/hosts/local/master/configuration.nix
@@ -13,8 +13,8 @@ in {
     ../../linux.nix
     ../../unfree.nix
     #../../android.nix
-    # ../gui.nix
-    # ../i3.nix
+    ../gui.nix
+    ../i3.nix
     # ../gnome.nix
     # ../wayland.nix
     ../nvidia.nix
@@ -56,7 +56,8 @@ in {
 
   zramSwap = {
     enable = true;
-    # algorithm = "zstd";
+    memoryPercent = 100;
+    algorithm = "zstd";
     # memoryPercent = 30;
   };
 
@@ -114,4 +115,18 @@ in {
   #     };
   #   };
   # };
+  # stop fucking crashing
+
+  systemd.services.nix-daemon.serviceConfig = {
+    MemoryHigh = "22G"; # throttle above this
+    MemoryMax = "28G"; # hard kill above this
+    # optional niceties:
+    CPUWeight = 50;
+    IOWeight = 50;
+    TasksMax = 4096;
+    # Let systemd-oomd preferentially kill these if needed:
+    ManagedOOMMemoryPressure = "kill";
+    ManagedOOMMemoryPressureLimit = "50%";
+  };
+  systemd.oomd.enable = true;
 }
diff --git a/hosts/local/nvidia.nix b/hosts/local/nvidia.nix
index 3d6f603..b8b335a 100644
--- a/hosts/local/nvidia.nix
+++ b/hosts/local/nvidia.nix
@@ -28,10 +28,17 @@ in {
   nix.settings.substituters = [
     "https://cuda-maintainers.cachix.org"
     "https://nix-community.cachix.org"
+    "https://huggingface.cachix.org"
+
+    "https://nix-ai-stuff.cachix.org"
+    "https://ai.cachix.org"
   ];
   nix.settings.trusted-public-keys = [
     "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
     "cuda-maintainers.cachix.org-1:0dq3bujKpuEPMCX6U4WylrUDZ9JyUG0VpVZa7CNfq5E="
+    "huggingface.cachix.org-1:ynTPbLS0W8ofXd9fDjk1KvoFky9K2jhxe6r4nXAkc/o="
+    "nix-ai-stuff.cachix.org-1:WlUGeVCs26w9xF0/rjyg32PujDqbVMlSHufpj1fqix8="
+    "ai.cachix.org-1:N9dzRK+alWwoKXQlnn0H6aUx0lU/mspIoz8hMvGvbbc="
   ];
 
   services.xserver = {
-- 
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