From 8c7af30fe7377235037c1a385f484f201ecfe063 Mon Sep 17 00:00:00 2001
From: tropf <tropf@users.noreply.github.com>
Date: Tue, 26 Aug 2025 15:15:19 +0200
Subject: [PATCH 2/2] move nextjs build into temporary directory

For the build command, upstream invokes a nextjs-base build inside
node_modules. As this is read-only in nix, the corresponding directory
is copied into a newly-created directory in the temporary directory
(e.g. /tmp), from where the build can successfully run.
---
 packages/web/cli/commands/build.ts | 38 +++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/packages/web/cli/commands/build.ts b/packages/web/cli/commands/build.ts
index b611cd9..213e82f 100644
--- a/packages/web/cli/commands/build.ts
+++ b/packages/web/cli/commands/build.ts
@@ -16,6 +16,36 @@ type Deps = {
   appConsole: AppConsole;
 };
 
+const fs = require('fs');
+const os = require('os');
+
+// Helper: Recursively copy directory
+function copyDirSync(src: any, dest: any) {
+  if (!fs.existsSync(dest)) fs.mkdirSync(dest, { recursive: true });
+  for (const entry of fs.readdirSync(src, { withFileTypes: true })) {
+    const srcPath = path.join(src, entry.name);
+    const destPath = path.join(dest, entry.name);
+    if (entry.isDirectory()) {
+      copyDirSync(srcPath, destPath);
+    } else {
+      fs.copyFileSync(srcPath, destPath);
+    }
+  }
+}
+
+// Helper: Recursively set writeable flag
+function setWriteableSync(target: any) {
+  const stat = fs.statSync(target);
+  if (stat.isDirectory()) {
+    fs.chmodSync(target, 0o755);
+    for (const entry of fs.readdirSync(target)) {
+      setWriteableSync(path.join(target, entry));
+    }
+  } else {
+    fs.chmodSync(target, 0o644);
+  }
+}
+
 export async function buildCommand(
   { appConsole }: Deps,
   outPath: string,
@@ -24,7 +54,13 @@ export async function buildCommand(
   process.env.NEXT_TELEMETRY_DISABLED = "1";
   appConsole.println("Building Log4brains...");
 
-  const nextDir = getNextJsDir();
+  const oldNextDir = getNextJsDir();
+
+  const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'log4brains-nextjs-'));
+  copyDirSync(oldNextDir, tmpDir);
+  setWriteableSync(tmpDir);
+  const nextDir = tmpDir;
+
   // eslint-disable-next-line global-require,import/no-dynamic-require,@typescript-eslint/no-var-requires
   const nextConfig = require(path.join(nextDir, "next.config.js")) as Record<
     string,
-- 
2.50.1