Project ideas from Hacker News discussions.

AI coding has made CI a bottleneck, so we reworked ours to keep up

📝 Discussion Summary (Click to expand)

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🚀 Project Ideas

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TestPacer

Summary

  • Provides dynamic test scheduling based on historical execution times to minimize total test suite runtime.
  • Integrates as a Vitest (or Jest) plugin that reorders test files on-the-fly for optimal parallel execution.

Details

Key Value
Target Audience Frontend teams using Vitest/Jest with large test suites
Core Feature Adaptive load balancer that sorts tests by predicted duration using moving averages
Tech Stack TypeScript, Node.js, Vitest plugin API, optional Redis for stats
Difficulty Medium
Monetization Revenue-ready: Subscription $10/dev/mo
#### Notes
- HN commenter d_sc said "vitest load balancing on test duration times instead of by file would be a nice performance win".
- Could spark discussion about test flakiness and CI optimization.

BazelCI-as-a-Service

Summary

  • Offers a managed CI platform with Bazel pre-configured, eliminating setup overhead.
  • Provides cached builds and customizable runners to speed up Agentic Coding workflows.

Details

Key Value
Target Audience Enterprises and startups using Bazel or wanting to adopt it for monorepos
Core Feature Hosted Bazel build farm with persistent cache, auto-scaling runners, and UI for pipeline definition
Tech Stack Go, Bazel, Kubernetes, gRPC, React dashboard
Difficulty High
Monetization Revenue-ready: Usage-based pricing per build-minute
#### Notes
- mraza007 mentioned using Bazel to improve build times and building customized runners for CI.
- azkalam noted Bazel yields ~10s warm cache times; service would make that accessible without infra work.

Agentic CI Optimizer

Summary

  • Uses machine learning to predict which tests are likely affected by AI-generated code changes, reducing unnecessary CI runs.
  • Detects and quarantines flaky tests introduced by agentic coding to keep CI green.

Details

Key Value
Target Audience Teams employing AI code assistants (Copilot, Cursor) experiencing CI strain
Core Feature Predictive test selection + flaky test detection engine integrated into CI (GitHub Actions, GitLab)
Tech Stack Python, scikit-learn, CI provider APIs, optional TensorFlow Lite
Difficulty Medium
Monetization Revenue-ready: Per-seat licensing $15/user/mo
#### Notes
- mraza007 highlighted Agentic Coding strain on CI; this would alleviate that.
- Could generate discussion on balancing AI productivity with CI reliability.

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