From 37e272b48d50530f0d6e3da1543e96c068939f49 Mon Sep 17 00:00:00 2001
From: Waleed Latif <walif6@gmail.com>
Date: Thu, 7 May 2026 14:34:19 -0700
Subject: [PATCH] revert(ci): drop turbopackFileSystemCacheForBuild and restore
 actions/cache
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Build times grew monotonically from ~200s to 1305s (~6x) after #4478 landed.
The Turbopack FS cache flag combined with sticky-disk persistence caused
unbounded cache growth. Reverting both — keeping the poweredByHeader and
optimizePackageImports trim from the original PR.
---
 .github/workflows/test-build.yml | 8 +++++---
 apps/sim/next.config.ts          | 1 -
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index 4359fd261ea..68c5a9901de 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -44,11 +44,13 @@ jobs:
           key: ${{ github.repository }}-turbo-cache
           path: ./.turbo
 
-      - name: Mount Next.js build cache (Sticky Disk)
-        uses: useblacksmith/stickydisk@v1
+      - name: Restore Next.js build cache
+        uses: actions/cache@v5
         with:
-          key: ${{ github.repository }}-nextjs-cache
           path: ./apps/sim/.next/cache
+          key: ${{ runner.os }}-nextjs-${{ hashFiles('bun.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-nextjs-
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
diff --git a/apps/sim/next.config.ts b/apps/sim/next.config.ts
index 68ad3b37fa7..8d750b386e5 100644
--- a/apps/sim/next.config.ts
+++ b/apps/sim/next.config.ts
@@ -98,7 +98,6 @@ const nextConfig: NextConfig = {
   experimental: {
     optimizeCss: true,
     preloadEntriesOnStart: false,
-    turbopackFileSystemCacheForBuild: true,
     optimizePackageImports: [
       'lodash',
       'framer-motion',