1 files changed, 34 insertions, 0 deletions
diff --git a/profiles/defaults.nix b/profiles/defaults.nix
index 7c8a7fb..80292b6 100644
--- a/profiles/defaults.nix
+++ b/profiles/defaults.nix
@@ -16,6 +16,40 @@
     };
   };
 
+  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"
+      ];
+    };
+  };
+
   networking = {
     useNetworkd = true;
     # Used by systemd-resolved, not directly by resolv.conf.