fyrer

lightweight tool to run multiple dev servers concurrently

Installation

install using cargo:

cargo install fyrer

build from source:

git clone https://github.com/07calc/fyrer
cd fyrer
cargo build --release
cargo install --path .

Usage

fyrer looks for a fyrer.yml file in the current directory:

fyrer

example config file fyrer.yml:

installers:
  - dir: ./project1
    cmd: pip install -r requirements.txt

services:
  - name: server1
    cmd: python -m http.server 8000
    dir: ./project1
    env_path: .env.local  ## .env file path
    env:                  ## overrides the .env file
      PORT: 8000
      ENV: dev

  - name: server2
    cmd: npm start
    dir: ./project2
    watch: true  # enable hot reload
    ignore:
      - "node_modules/**"
      - "*.db"

Features

• Run multiple development servers concurrently
• Define installer commands that run before starting each server
• Set a working directory per server
• Automatic env parsing from .env file
• Assign environment variables per server (overrides the env file)
• YAML-based configuration file
• Prefixed log output for readability
• Cross-platform support (Linux, macOS, Windows)
• Optional hot reload
• Configurable file and directory ignore rules for hot reload

Notes

• watch: true enables file monitoring for that server.
• Ignore patterns follow glob syntax.
• restarts servers when watched files change.
• envs defined in fyrer.yml overrides those in .env file.