zaphyra's git: nixfiles

config/nixos/modules/services: add earlyoom

diff --git a/config/nixos/modules/presets/base.nix b/config/nixos/modules/presets/base.nix
@@ -61,6 +61,13 @@ in
         networking = lib.mkDefault true;
       };
 
+      services = {
+        earlyoom = {
+          avoid = [ "init" ];
+          prefer = [ "nix" ];
+        };
+      };
+
       programs = {
         shellUtilities.enable = lib.mkDefault true;
         systemUtilities.enable = lib.mkDefault true;

diff --git a/config/nixos/modules/services/earlyoom.nix b/config/nixos/modules/services/earlyoom.nix
@@ -0,0 +1,41 @@
+{
+  povSelf,
+  config,
+  lib,
+  ...
+}:
+let
+  inherit (lib) types;
+  cfg = lib.getAttrFromPath povSelf config;
+
+in
+{
+
+  options = {
+    enable = {
+      type = types.bool;
+      default = false;
+    };
+    avoid = {
+      type = types.listOf types.str;
+      default = [ ];
+    };
+    prefer = {
+      type = types.listOf types.str;
+      default = [ ];
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.earlyoom = {
+      enable = true;
+      enableNotifications = true;
+      extraArgs = [
+        "--ignore-root-user"
+        (lib.mkIf (cfg.avoid != [ ]) "--avoid '(^|/)(${lib.concatStringsSep "|" cfg.avoid})$'")
+        (lib.mkIf (cfg.prefer != [ ]) "--avoid '(^|/)(${lib.concatStringsSep "|" cfg.prefer})$'")
+      ];
+    };
+  };
+
+}