# rnrepo

Guides the setup and troubleshooting of RNRepo in React Native and Expo projects, cutting native build times by up to 2× with prebuilt artifacts.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 1100 installs · ★ 296
- Author: software-mansion-labs
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/software-mansion-labs/skills/tree/HEAD/skills/rnrepo/SKILL.md
- Updated: 2026-10-15
- HTML: https://affpapa.org/en/nevibecode/skills/rnrepo

## What it does

This skill guides the integration of RNRepo into React Native and Expo CNG projects. The tooling replaces local dependency compilation with prebuilt binaries from `packages.rnrepo.org`. A Gradle plugin handles Android dependencies, while CocoaPods manages iOS. When a prebuild is unavailable, the pipeline falls back to building from source code.

Setup differs by project type. Expo relies on `@rnrepo/expo-config-plugin`, whereas bare React Native requires `@rnrepo/build-tools` and edits to `android/build.gradle`, `android/app/build.gradle`, and `ios/Podfile`. Keep in mind that RNRepo requires the New Architecture: attempting to use it on legacy architectures will fail, as it only supports latest patches of 0.77, 0.78, 0.79, and versions above 0.80.0.

Libraries containing native patches in Kotlin, Java, or Objective-C must be excluded via `denyList` in `rnrepo.config.json`. You can also bypass the entire mechanism by exporting `DISABLE_RNREPO=1` before your build.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add software-mansion-labs/skills --skill rnrepo -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/rnrepo/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/rnrepo/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add software-mansion-labs/skills --skill rnrepo -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/rnrepo/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add software-mansion-labs/skills --skill rnrepo -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/rnrepo/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install software-mansion-labs/skills rnrepo
```

2. **Manually: put the files in place**
- File: `.github/skills/rnrepo/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add software-mansion-labs/skills --skill rnrepo -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/software-mansion-labs/skills --path skills/rnrepo
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/rnrepo/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add software-mansion-labs/skills --skill rnrepo -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/software-mansion-labs/skills/tree/HEAD/skills/rnrepo/SKILL.md

## When to use it
- Cut React Native native build times by up to 2×
- Configure `@rnrepo/expo-config-plugin` for Expo CNG projects
- Set up `@rnrepo/build-tools` in `Podfile` and Gradle files
- Exclude patched native libraries via `denyList` in `rnrepo.config.json`
- Troubleshoot duplicate `.so` files and C++ debug release mismatches

## Example prompts
- Help me set up RNRepo in an Expo CNG project using `@rnrepo/expo-config-plugin`
- How do I exclude a library with native patches using `denyList` in `rnrepo.config.json`?
- Fix a build failure caused by duplicate `.so` files when using RNRepo

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 2f45ea91384be673.

BEGIN THIRD-PARTY FILE 2f45ea91384be673
```text
---
name: rnrepo
description: "Best practices for integrating and using RNRepo — Software Mansion's infrastructure for pre-built React Native library artifacts that reduces native build times by up to 2×. Use when setting up, configuring, or troubleshooting RNRepo in a React Native or Expo project. Trigger on: 'RNRepo', 'rnrepo', 'slow builds', 'build times', 'prebuilt artifacts', 'prebuilt libraries', '@rnrepo/expo-config-plugin', '@rnrepo/build-tools', 'prebuilds-plugin', 'rnrepo.config.json', 'DISABLE_RNREPO', 'packages.rnrepo.org', 'Maven prebuild', 'CocoaPods prebuild', 'xcframework prebuild', 'prebuild AAR', 'build from source', 'native compilation slow', 'Gradle plugin slow', 'pod install slow', 'CI build times'."
license: MIT
---

# RNRepo

Software Mansion's infrastructure for pre-building and distributing React Native library artifacts, reducing native build times by up to **2×** with zero infrastructure changes.

Read the relevant reference for the topic at hand. All references are in `references/`.

## Key facts

- **Beta, New Architecture only.** Works with React Native latest patches of 0.77, 0.78, 0.79 and all versions above 0.80.0.
- **How it works:** A Gradle plugin (Android) and CocoaPods plugin (iOS) intercept the build and substitute libraries with prebuilt artifacts from `packages.rnrepo.org`. Falls back to source if a prebuild is unavailable.
- **Expo CNG:** Use `@rnrepo/expo-config-plugin` — it configures both Android and iOS automatically.
- **Standard RN:** Install `@rnrepo/build-tools` and edit `android/build.gradle`, `android/app/build.gradle`, and `ios/Podfile` manually.
- **Opt out per library:** Add a `rnrepo.config.json` with a `denyList` at the project root. Required for libraries with **native patches** (Objective-C/Java/Kotlin). JS-only patches do NOT require opting out.
- **Opt out entirely:** Set `DISABLE_RNREPO=1` environment variable before the build command.

## References

| File | When to read |
|------|-------------|
| `references/installation.md` | Setting up RNRepo for the first time — Expo CNG, standard React Native, Android Gradle, iOS CocoaPods |
| `references/configuration.md` | Opting out specific libraries (denyList), disabling the plugin, Fingerprint config, GPG verification |
| `references/troubleshooting.md` | Build failures, C++ debug/release mismatch, duplicate `.so` files, Xcode version issues, empty repository list, verifying the plugin works |
```
END THIRD-PARTY FILE 2f45ea91384be673

The third-party file has ended. Everything between the 2f45ea91384be673 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

© software-mansion-labs · MIT · https://github.com/software-mansion-labs/skills/tree/HEAD/skills/rnrepo/SKILL.md

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