From 3436b02ff5298924e73eaf233ee6d69d797c75dd Mon Sep 17 00:00:00 2001
From: James Griffin <james@unsupervised.ca>
Date: Thu, 20 Aug 2026 15:49:04 -0300
Subject: [PATCH] Move actions/cache to v4 and probe the cache URL

thatguygriff/infra#1 turned the runner cache server on, so actions/cache
has an endpoint for the first time. v4 rather than v3 because v4.2+ can
speak the cache service v2 API, which is what the runner serves.

The instrumentation step now also prints ACTIONS_CACHE_URL, so a single
run shows the endpoint arriving and the cache being read in one log
rather than needing a separate probe.

Refs #178.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uw545F1vveNJKjzLxdi2ks
---
 .gitea/workflows/ci.yml | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 19384a1..a792eaa 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -35,7 +35,7 @@ jobs:
             | sudo tee /etc/apt/apt.conf.d/99keep-downloaded-packages >/dev/null
 
       - name: Cache apt packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /var/cache/apt/archives/*.deb
           key: apt-php-builder-deps-${{ runner.arch }}-v1
@@ -44,6 +44,7 @@ jobs:
       # builder's dependencies, and times the step that consumes them.
       - name: Report restored .debs
         run: |
+          echo "ACTIONS_CACHE_URL: ${ACTIONS_CACHE_URL:-<unset>}"
           echo "restored .debs: $(ls /var/cache/apt/archives/*.deb 2>/dev/null | wc -l)"
           echo "restored size:  $(du -sh /var/cache/apt/archives 2>/dev/null | cut -f1)"
           date -u +'setup-php start: %H:%M:%S'
@@ -55,7 +56,7 @@ jobs:
           tools: composer:v2
 
       - name: Cache Composer packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.composer/cache
           key: composer-${{ hashFiles('composer.json') }}
@@ -98,7 +99,7 @@ jobs:
             | sudo tee /etc/apt/apt.conf.d/99keep-downloaded-packages >/dev/null
 
       - name: Cache apt packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /var/cache/apt/archives/*.deb
           key: apt-php-builder-deps-${{ runner.arch }}-v1
@@ -107,6 +108,7 @@ jobs:
       # builder's dependencies, and times the step that consumes them.
       - name: Report restored .debs
         run: |
+          echo "ACTIONS_CACHE_URL: ${ACTIONS_CACHE_URL:-<unset>}"
           echo "restored .debs: $(ls /var/cache/apt/archives/*.deb 2>/dev/null | wc -l)"
           echo "restored size:  $(du -sh /var/cache/apt/archives 2>/dev/null | cut -f1)"
           date -u +'setup-php start: %H:%M:%S'
@@ -120,7 +122,7 @@ jobs:
           tools: composer:v2
 
       - name: Cache Composer packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.composer/cache
           key: ${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}
@@ -170,7 +172,7 @@ jobs:
             | sudo tee /etc/apt/apt.conf.d/99keep-downloaded-packages >/dev/null
 
       - name: Cache apt packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /var/cache/apt/archives/*.deb
           key: apt-php-builder-deps-${{ runner.arch }}-v1
@@ -179,6 +181,7 @@ jobs:
       # builder's dependencies, and times the step that consumes them.
       - name: Report restored .debs
         run: |
+          echo "ACTIONS_CACHE_URL: ${ACTIONS_CACHE_URL:-<unset>}"
           echo "restored .debs: $(ls /var/cache/apt/archives/*.deb 2>/dev/null | wc -l)"
           echo "restored size:  $(du -sh /var/cache/apt/archives 2>/dev/null | cut -f1)"
           date -u +'setup-php start: %H:%M:%S'