From 9e39863bf5a3d39b65583cfa5c3555b76b38e25c Mon Sep 17 00:00:00 2001
From: Don Harper <duck@duckland.org>
Date: Mon, 18 Aug 2025 19:21:12 -0500
Subject: [PATCH] flake.nix | add binary caches

---
 flake.nix | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/flake.nix b/flake.nix
index 7c296d4..78e1c48 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,4 +1,23 @@
 {
+  description = "NixOS System Configuration for duckland.org";
+
+  # Binary cache configuration for faster builds
+  nixConfig = {
+    allowUnfree = true;
+    # Binary cache servers (substituters)
+    extra-substituters = [
+      "https://cache.nixos.org"
+      "https://chaotic-nyx.cachix.org"
+      "https://nix-community.cachix.org"
+    ];
+    # Public keys for binary cache verification
+    extra-trusted-public-keys = [
+      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+      "chaotic-nyx.cachix.org-1:HfnXSw4pj95iI/n17rIDy40agHj12WfF+Gqk6SonIT8="
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     # nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";