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new-mac-setup

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Fully automated new Mac setup for fullstack web developers and AI engineers. Generates and executes idempotent shell scripts to install dev tools, CLI utilities, GUI apps, AI/ML tooling, shell config, and macOS preferences — all via Homebrew, fnm, uv, and defaults commands. Use this skill whenever someone says "set up my Mac", "new Mac setup", "configure my dev machine", "install my dev tools", "fresh Mac install", "developer environment setup", or anything about bootstrapping a macOS machine for development. Also trigger when someone mentions setting up Homebrew, Oh-My-ZSH, Node.js, Python, Docker, or terminal configuration on a new Mac — even if they don't call it a "setup". This skill is opinionated and based on real-world experience setting up M-series Macs for fullstack JS/TS + Python + AI development.

new-mac-setup/SKILL.md

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Nov 9, 2026
License
MIT

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# New Mac Setup

This skill generates and runs a complete, idempotent Mac setup for fullstack web development and AI engineering. It produces 8 shell scripts that can be run individually or via a master runner, plus dotfiles and macOS preference automation.

The scripts are designed to be re-runnable — they check whether each tool is already installed before attempting installation, so you can safely run them again if something fails partway through.

## Philosophy

The setup is opinionated. The core opinions:

- **Terminal**: Ghostty (fast, GPU-accelerated, Zig) + cmux (vertical tabs, split panes, socket API for AI agents). cmux reads Ghostty's config, so one config file serves both.
- **Shell**: ZSH with Oh-My-ZSH, powerlevel10k theme, zsh-autosuggestions, zsh-syntax-highlighting
- **Node**: fnm (not nvm — fnm is faster), pnpm and bun for package management/runtime
- **Python**: uv from Astral (not pyenv, not pip, not conda — uv is dramatically faster and handles both venvs and package installs)
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