From 9edcc20f39a11339426ebe14ad6d2695ee4b1ecc Mon Sep 17 00:00:00 2001
From: Natsu Kagami <nki@nkagami.me>
Date: Sun, 4 May 2025 10:54:48 -0400
Subject: [PATCH] Allow builders to fetch built artifacts

---
 modules/services/nix-build-farm/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/services/nix-build-farm/default.nix b/modules/services/nix-build-farm/default.nix
index 3c51da1..de774c7 100644
--- a/modules/services/nix-build-farm/default.nix
+++ b/modules/services/nix-build-farm/default.nix
@@ -49,6 +49,9 @@ in
         }
         // host.builder
       ) otherBuilders;
+      nix.extraOptions = ''
+        builders-use-substitutes = true
+      ''; # allow builders to fetch built artifacts
 
       users = mkIf (isBuilder host) {
         users.${build-user} = {