From 1ab6692453ae981a9600492566e5ed032fd01761 Mon Sep 17 00:00:00 2001
From: Franck Cuny <franck@fcuny.net>
Date: Mon, 6 Oct 2025 19:35:43 -0700
Subject: nix configuration is applied by default to nixos machines

---
 modules/nixos/nix.nix | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 modules/nixos/nix.nix

(limited to 'modules/nixos/nix.nix')

diff --git a/modules/nixos/nix.nix b/modules/nixos/nix.nix
new file mode 100644
index 0000000..34afa21
--- /dev/null
+++ b/modules/nixos/nix.nix
@@ -0,0 +1,36 @@
+{ pkgs, lib, ... }:
+{
+  nix = {
+    gc = {
+      automatic = true;
+      options = "--delete-older-than 14d";
+    };
+
+    optimise.automatic = true;
+
+    extraOptions = ''
+      tarball-ttl = 900
+    '';
+
+    package = pkgs.nixVersions.stable;
+
+    settings = {
+      trusted-substituters = [
+        "https://cachix.cachix.org"
+        "https://nixpkgs.cachix.org"
+        "https://nix-community.cachix.org"
+      ];
+      trusted-public-keys = [
+        "cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM="
+        "nixpkgs.cachix.org-1:q91R6hxbwFvDqTSDKwDAV4T5PxqXGxswD8vhONFMeOE="
+        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      ];
+      trusted-users = [ "root" ];
+      experimental-features = lib.mkDefault [
+        "nix-command"
+        "flakes"
+      ];
+    };
+  };
+}
-- 
cgit v1.2.3