From ef9c4cbdbbeee056b08f5f7859519bab0577ed2e Mon Sep 17 00:00:00 2001
From: John Bowdre <john@bowdre.net>
Date: Sun, 24 Sep 2023 19:11:38 -0500
Subject: [PATCH] nixos: add nix configurations

---
 hosts/common/global/default.nix |  1 +
 hosts/common/global/nix.nix     | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 hosts/common/global/nix.nix

diff --git a/hosts/common/global/default.nix b/hosts/common/global/default.nix
index 968b0e0..9ce1140 100644
--- a/hosts/common/global/default.nix
+++ b/hosts/common/global/default.nix
@@ -3,6 +3,7 @@
     inputs.home-manager.nixosModules.home-manager
     ./fish.nix
     ./locale.nix
+    ./nix.nix
     ./tailscale.nix
   ] ++ (builtins.attrValues outputs.nixosModules);
 
diff --git a/hosts/common/global/nix.nix b/hosts/common/global/nix.nix
new file mode 100644
index 0000000..1766ed3
--- /dev/null
+++ b/hosts/common/global/nix.nix
@@ -0,0 +1,22 @@
+{ inputs, lib, ... }:
+{
+  nix = {
+    settings = {
+      trusted-users = [ "root" "@wheel" ];
+      auto-optimise-store = lib.mkDefault true;
+      experimental-features = [ "nix-command" "flakes" "repl-flake" ];
+      warn-dirty = false;
+      system-features = [ "kvm" "big-parallel" "nixos-test" ];
+      flake-registry = "";
+    };
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than +3";
+    };
+
+    registry = lib.mapAttrs (_: value: { flake = value; }) inputs;
+
+    nixPath = [ "nixpkgs=${inputs.nixpkgs.outPath}" ];
+  };
+}
\ No newline at end of file