From 6829c7efe2a735d249f5135bff4a0fc28411a295 Mon Sep 17 00:00:00 2001
From: asepharyana <superaseph@gmail.com>
Date: Mon, 3 Aug 2026 04:05:03 +0700
Subject: [PATCH] fix(infra): disable Next image disk cache for read-only Nix
 store

Next.js image optimizer mkdirs <distDir>/cache/images on first
optimized-image request. In the Nix store that path is read-only, so
every image request throws EACCES unhandledRejection. images.maximumDiskCacheSize=0
plus experimental.isrFlushToDisk=false keep the optimizer in-memory only.
---
 next.config.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/next.config.ts b/next.config.ts
index 324b07a..50f8b6f 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -5,6 +5,16 @@ const nextConfig: NextConfig = {
   turbopack: {
     root: process.cwd(),
   },
+  // Nix store is read-only at runtime; Next.js tries to mkdir
+  // <distDir>/cache/images for the on-disk image optimizer LRU and
+  // crashes with EACCES unhandledRejection on every optimized image
+  // request. Disable the disk cache (and disable ISR flush which gates it).
+  images: {
+    maximumDiskCacheSize: 0,
+  },
+  experimental: {
+    isrFlushToDisk: false,
+  },
 };
 
 export default nextConfig;