https://github.com/protagonistss/fnva

Management environment Java、Maven、Node、LLM
https://github.com/protagonistss/fnva

cc env java llm maven node

Last synced: 2 months ago
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Management environment Java、Maven、Node、LLM

• Host: GitHub
• URL: https://github.com/protagonistss/fnva
• Owner: Protagonistss
• License: mit
• Created: 2021-11-23T02:26:07.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2025-12-24T10:34:28.000Z (6 months ago)
• Last Synced: 2025-12-26T00:58:51.262Z (6 months ago)
• Topics: cc, env, java, llm, maven, node
• Language: Rust
• Homepage:
• Size: 4.24 MB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Agents: AGENTS.md

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README

          
# fnva - Fast Environment Version Alter

[![npm version](https://img.shields.io/npm/v/fnva)](https://www.npmjs.com/package/fnva) [![crates.io](https://img.shields.io/crates/v/fnva)](https://crates.io/crates/fnva) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)

[中文文档](README_zh.md) · [Full English](README_en.md) · [Docs](docs/)

Cross-platform environment switcher for Java, Claude Code (CC), and LLM setups. Rust single binary with fast startup and zero runtime dependencies.

## Install

- npm: `npm install -g fnva`

- Cargo: `cargo install fnva`

- Binary: download from [Releases](https://github.com/Protagonistss/fnva/releases) and add to `PATH`.

## Quick start

- Init shell (Bash/Zsh): `eval "$(fnva env env --shell bash)"`

  PowerShell: `fnva env env --shell powershell | Out-String | Invoke-Expression`

  Fish: `fnva env env --shell fish | source`

- Scan Java: `fnva java scan`

- Switch Java for current session: `fnva java use jdk-17` (with shell integration)

- Switch CC profile: `fnva cc use glmcc` (with shell integration)

- New terminals auto-restore your last active environment

## What it does

- Manages multiple Java, CC, and generic LLM configurations.

- Generates shell snippets to activate environments per session or by default.

- **Auto-restore** — new terminals automatically restore the last active CC/Java environment.

- Stores config at `~/.fnva/config.toml` (Windows: `%USERPROFILE%\.fnva\config.toml`).

- Ships as a single binary; no background daemon.

## Build/test locally

```

cargo fmt && cargo clippy --all-targets -- -D warnings

cargo test

cargo build --release

```

For platform bundles: `npm run build:platforms`