From 3449e2ef99f60d468a571a0086f11dcdc32b390e Mon Sep 17 00:00:00 2001
From: phorcys420 <57866459+phorcys420@users.noreply.github.com>
Date: Mon, 24 Aug 2026 21:54:33 +0000
Subject: [PATCH] feat(configuration.nix): add nix-community cachix substituter

---
 configuration.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/configuration.nix b/configuration.nix
index 3b4fe14..f7d27ae 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -392,6 +392,14 @@ in
       "flakes"
     ];
     nix.settings.download-buffer-size = 268435456; # 256 MiB; quiets the "buffer full" warning on big closure pulls
+
+    # Extra binary cache: pull community-built closures (disko and other
+    # nix-community derivations) instead of building them locally. `extra-`
+    # appends to the defaults, so cache.nixos.org stays in place.
+    nix.settings.extra-substituters = [ "https://nix-community.cachix.org" ];
+    nix.settings.extra-trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
     networking.firewall.enable = false;
 
     # ── PostgreSQL ────────────────────────────────────────────────────────────