From d393b42e267c59ad3319786a7f7c962d72f4d6e0 Mon Sep 17 00:00:00 2001
From: nubs <nubs@nubs.site>
Date: Thu, 2 Jul 2026 07:37:59 +0000
Subject: [PATCH] =?UTF-8?q?fix(ci):=20move=20bun=20install=20cache=20off?=
 =?UTF-8?q?=20slow=20/tmp=20to=20local=20$HOME=20=E2=80=94=20the=20real=20?=
 =?UTF-8?q?deploy-hang=20root=20cause=20(#10839)?=
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The canary->latest pin (#11235) did NOT fix the deploy hang: run 28572046433
hung on install for 17min+ on a released bun too. Root cause is the install
cache living under $PWD (= the checkout dir on the box /tmp), whose
contended/slow filesystem stalls bun linking past the 900s cap. bun logs
"Slow filesystem detected ... consider setting $BUN_INSTALL_CACHE_DIR to a
local folder". Point the cache at $HOME (local disk, persistent/warm) on all
three deploy jobs.
---
 .github/workflows/cloud-cf-deploy.yml | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/cloud-cf-deploy.yml b/.github/workflows/cloud-cf-deploy.yml
index bc955a20c729c..38dd618a13596 100644
--- a/.github/workflows/cloud-cf-deploy.yml
+++ b/.github/workflows/cloud-cf-deploy.yml
@@ -227,7 +227,14 @@ jobs:
         # matches CHECKOUT_MATERIALIZE_TIMEOUT_SECONDS; a true hang still aborts.
         run: |
           set -euo pipefail
-          install_cache="$PWD/.bun-install-cache"
+          # Cache on LOCAL disk ($HOME), not under $PWD — the checkout dir lives
+          # on the box's /tmp, whose contended/slow filesystem stalls bun's link
+          # phase past the 900s cap and wedges deploys (bun itself logs "Slow
+          # filesystem detected ... consider setting $BUN_INSTALL_CACHE_DIR to a
+          # local folder"). This is the real fix; the earlier canary→latest pin
+          # (#11235) did not address it — the hang recurs on a released bun too
+          # (run 28572046433). Persistent across runs so the cache stays warm.
+          install_cache="${HOME}/.bun-install-cache-deploy"
           install_timeout="${BUN_INSTALL_TIMEOUT_SECONDS:-900}"
           for attempt in 1 2 3; do
             test -f package.json || { echo "::error::package.json missing from $PWD"; ls -la; exit 1; }
@@ -535,7 +542,14 @@ jobs:
         # matches CHECKOUT_MATERIALIZE_TIMEOUT_SECONDS; a true hang still aborts.
         run: |
           set -euo pipefail
-          install_cache="$PWD/.bun-install-cache"
+          # Cache on LOCAL disk ($HOME), not under $PWD — the checkout dir lives
+          # on the box's /tmp, whose contended/slow filesystem stalls bun's link
+          # phase past the 900s cap and wedges deploys (bun itself logs "Slow
+          # filesystem detected ... consider setting $BUN_INSTALL_CACHE_DIR to a
+          # local folder"). This is the real fix; the earlier canary→latest pin
+          # (#11235) did not address it — the hang recurs on a released bun too
+          # (run 28572046433). Persistent across runs so the cache stays warm.
+          install_cache="${HOME}/.bun-install-cache-deploy"
           install_timeout="${BUN_INSTALL_TIMEOUT_SECONDS:-900}"
           for attempt in 1 2 3; do
             test -f package.json || { echo "::error::package.json missing from $PWD"; ls -la; exit 1; }
@@ -874,7 +888,14 @@ jobs:
         # matches CHECKOUT_MATERIALIZE_TIMEOUT_SECONDS; a true hang still aborts.
         run: |
           set -euo pipefail
-          install_cache="$PWD/.bun-install-cache"
+          # Cache on LOCAL disk ($HOME), not under $PWD — the checkout dir lives
+          # on the box's /tmp, whose contended/slow filesystem stalls bun's link
+          # phase past the 900s cap and wedges deploys (bun itself logs "Slow
+          # filesystem detected ... consider setting $BUN_INSTALL_CACHE_DIR to a
+          # local folder"). This is the real fix; the earlier canary→latest pin
+          # (#11235) did not address it — the hang recurs on a released bun too
+          # (run 28572046433). Persistent across runs so the cache stays warm.
+          install_cache="${HOME}/.bun-install-cache-deploy"
           install_timeout="${BUN_INSTALL_TIMEOUT_SECONDS:-900}"
           for attempt in 1 2 3; do
             test -f package.json || { echo "::error::package.json missing from $PWD"; ls -la; exit 1; }