Dotfiles

Modern developer configuration with safe installation and Nix package management.

Installation

git clone https://github.com/wcygan/dotfiles.git
cd dotfiles
./install.sh

Full documentation available at: https://wcygan.github.io/dotfiles/

What You Get

• 🚀 Modern CLI tools: ripgrep, fd, bat, eza, fzf, delta, and more
• 🐟 Fish shell: Full configuration with functions and abbreviations
• ⭐ Starship prompt: Beautiful, fast, and informative
• 📦 Nix packages: Reproducible across macOS, Ubuntu, and Fedora
• 🔗 Safe symlinks: Automatic backups before any changes

Project Structure

dotfiles/
├── config/             # Configuration files
│   ├── fish/           # Fish shell config
│   ├── claude/         # Claude Code config and skills
│   ├── codex/          # Codex config, global instructions, and skills
│   ├── zed/            # Zed config
│   ├── ghostty/        # Ghostty config
│   ├── starship.toml   # Starship prompt
│   └── shell-nix.sh    # Bash/zsh compatibility
├── scripts/            # Installation scripts
├── flake.nix           # Nix package definitions
├── install.sh          # One-command installer
└── docs/               # Documentation site

Post-Install Extras

Peon Ping (Claude Code sound notifications)

Peon Ping plays Warcraft-style sound cues when Claude Code needs attention. Not managed by Nix — install separately via Homebrew:

brew install PeonPing/tap/peon-ping && peon-ping-setup

This adds hooks and skills to your local ~/.claude/ config. These files are gitignored and will need to be reinstalled on new machines.

Agent Skills

Claude Code config is linked from config/claude to ~/.claude. Codex is managed narrowly: config/codex/config.toml is a portable template copied to ${CODEX_HOME:-~/.codex}/config.toml only when missing, config/codex/AGENTS.md points to ${CODEX_HOME:-~/.codex}/AGENTS.md, and config/codex/skills points to ${CODEX_HOME:-~/.codex}/skills, while the rest of CODEX_HOME remains machine-local runtime state. Codex may write machine-specific [projects] trust entries into the local config; keep those out of the tracked template.

npm Global Tools

The installer configures npm's user prefix and a 3-day dependency release cooldown in ~/.npmrc:

prefix=${HOME}/.local
min-release-age=3

That keeps npm install -g writable when npm comes from Nix, and exposes global binaries through ~/.local/bin, which the shell config already adds to PATH behind Nix-managed tools.

Example:

npm install -g @playwright/cli@latest
playwright-cli --help

Dependency Install Cooldowns

The repo's docs site uses npm (docs/package-lock.json). The installer also sets equivalent 3-day cooldowns for Bun and Deno:

• Bun: links config/bunfig.toml to global bunfig locations with minimumReleaseAge = 259200.
• npm: manages min-release-age=3 in ~/.npmrc. npm does not currently expose a documented package or scope exemption key for this setting.
• Deno: links config/deno/deno.jsonc and shell wrappers apply it to deno install, deno add, deno update, deno outdated, and deno x when no project deno.json or deno.jsonc is already active.

Bun and Deno exempt the @wcygan/* workspace scope from the cooldown.

Per-Project Dev Environments (nix-direnv)

For reproducible per-project tool versions, use nix-direnv.

One-time machine setup

1. Ensure direnv is in flake.nix packages
2. Fish hook is preconfigured at config/fish/conf.d/20-direnv.fish
3. Global direnv config allows nix-direnv

Per-repository setup

1. Create .envrc:

   use flake

2. Create flake.nix with a dev shell:

   {
     inputs.nixpkgs.url = "github:NixOS/nixpkgs";
     outputs = { self, nixpkgs }: {
       devShells.x86_64-darwin.default = nixpkgs.legacyPackages.x86_64-darwin.mkShell {
         packages = [ /* project-specific tools */ ];
       };
     };
   }

3. direnv allow to trust the environment.

Commit .envrc and flake.nix; gitignore .direnv/. Use cases: language toolchains (Node 20 vs 18), pinned database clients, exact build tool versions, locked cloud CLIs.

For troubleshooting concurrent direnv rebuilds and Nix daemon issues, the agent has a dedicated nix-direnv-perf skill.

Nix Installation (macOS)

Use the Determinate Systems macOS Installer rather than the shell script. Download it from docs.determinate.systems, run the installer, then ./install.sh to set up dotfiles. The installer handles macOS integration, automatic updates, and Apple Silicon optimization.

Quick Reference

# Update packages
nix flake update
nix profile upgrade '.*'

# Add new packages
# Edit flake.nix, then:
nix profile install .

# Uninstall (configs only, keeps Nix)
make uninstall

# Run tests
make test-pre
make test-local

# Start documentation dev server
make docs