From cbb68752b4c6db261317e315b574a698074820c7 Mon Sep 17 00:00:00 2001
From: Claudio Bley <claudio.bley@tweag.io>
Date: Thu, 3 Aug 2023 11:08:55 +0200
Subject: [PATCH] Use a disk cache on windows

Building on windows currently takes a long time (> 2h) and fails eventually when the connection to
the build event upload service is closed.

Using a disk_cache which is stored in Github's action cache hopefully avoids
building stackage libraries every time.

Currently the cache key depends on the hash of the `stackage_snapshot.yaml` file, so it is
evicted whenever that file changes. There is no cache cleanup done currently.
---
 .bazelrc.common                 | 1 +
 .github/workflows/workflow.yaml | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/.bazelrc.common b/.bazelrc.common
index 6b32043ac..a60a8d4df 100644
--- a/.bazelrc.common
+++ b/.bazelrc.common
@@ -64,6 +64,7 @@ build:ci-common --experimental_repository_cache_hardlinks
 
 # Use a remote cache during CI
 build:ci-windows-bindist --bes_upload_mode=wait_for_upload_complete --bes_timeout=60s
+build:ci-windows-bindist --disk_cache=.bazel-cache/disk
 build:remote-cache --remote_cache=grpcs://remote.buildbuddy.io
 build:ci-common --remote_timeout=3600
 # Avoid failures of the form `deadline exceeded after 14999958197ns DEADLINE_EXCEEDED`.
diff --git a/.github/workflows/workflow.yaml b/.github/workflows/workflow.yaml
index 255527635..1fbcc7526 100644
--- a/.github/workflows/workflow.yaml
+++ b/.github/workflows/workflow.yaml
@@ -112,6 +112,11 @@ jobs:
           sudo apt clean
           docker rmi $(docker images -q) -f
       - uses: actions/checkout@v3
+      - name: Add disk cache
+        uses: actions/cache@v3
+        with:
+          path: .bazel-cache/disk
+          key: disk-cache-${{ runner.os }}-${{ hashFiles('stackage_snapshot.yaml') }}
       - name: Mount Bazel cache
         uses: actions/cache@v3
         with: