🤖 This is an automated pull request from Repo Assist, an AI assistant for this repository.
Summary
Adds dependency caching to the build-and-test CI workflow to avoid re-downloading packages on every run.
Changes
Two actions/cache@v4 steps are inserted before the restore steps:
| Cache |
Path |
Key |
| NuGet packages |
~/.nuget/packages |
paket.lock hash |
| uv Python packages |
~/.cache/uv |
uv.lock hash |
Both caches fall back to prefix-only restore keys so a partial cache hit still saves time when lock files change.
Motivation
Currently every CI run restores all .NET NuGet packages and all Python packages from scratch. These packages rarely change between commits, so caching them can cut the restore step from ~30–60 s down to a few seconds for cache hits.
Trade-offs
- Cache invalidation is automatic: whenever paket.lock or uv.lock changes, the cache key changes and a fresh download occurs.
- Storage is minimal (GitHub Actions cache is free up to 10 GB per repo).
- No behavioural change — only the restore speed improves.
Warning
Protected Files — Push Permission Denied
This was originally intended as a pull request, but the patch modifies protected files. A human must create the pull request manually.
Protected files
The push was rejected because GitHub Actions does not have workflows permission to push these changes, and is never allowed to make such changes, or other authorization being used does not have this permission.
Create the pull request manually
# Download the patch from the workflow run
gh run download 24596089857 -n agent -D /tmp/agent-24596089857
# Create a new branch
git checkout -b repo-assist/eng-ci-caching-2026-04-18-3e72f288219c2ec4 main
# Apply the patch (--3way handles cross-repo patches)
git am --3way /tmp/agent-24596089857/aw-repo-assist-eng-ci-caching-2026-04-18.patch
# Push the branch and create the pull request
git push origin repo-assist/eng-ci-caching-2026-04-18-3e72f288219c2ec4
gh pr create --title '[Repo Assist] ci: add NuGet and uv dependency caching to build-and-test workflow' --base main --head repo-assist/eng-ci-caching-2026-04-18-3e72f288219c2ec4 --repo fable-compiler/Fable.Python
Generated by Repo Assist · ● 2M · ◷
🤖 This is an automated pull request from Repo Assist, an AI assistant for this repository.
Summary
Adds dependency caching to the build-and-test CI workflow to avoid re-downloading packages on every run.
Changes
Two actions/cache@v4 steps are inserted before the restore steps:
Both caches fall back to prefix-only restore keys so a partial cache hit still saves time when lock files change.
Motivation
Currently every CI run restores all .NET NuGet packages and all Python packages from scratch. These packages rarely change between commits, so caching them can cut the restore step from ~30–60 s down to a few seconds for cache hits.
Trade-offs
Warning
Protected Files — Push Permission Denied
This was originally intended as a pull request, but the patch modifies protected files. A human must create the pull request manually.
Protected filesThe push was rejected because GitHub Actions does not have workflows permission to push these changes, and is never allowed to make such changes, or other authorization being used does not have this permission.