Dotfiles Best Practices Skill

Dotfiles Best Practices

Reference knowledge for modern dotfiles configuration, organization, and tooling. Serves as the knowledge base for the dotfiles-optimizer orchestrator.

User-Specific Decisions

Theme: Catppuccin Macchiato across all tools (set via $THEME_FLAVOUR=macchiato)

Shell structure: Modular zsh.d/ with numeric prefix load ordering:

zsh/zsh.d/
├── 00-env.zsh           # Environment variables, PATH
├── 10-options.zsh       # Shell options (setopt)
├── 20-completions.zsh   # Completion system
├── 30-plugins.zsh       # Plugin loading
├── 40-lazy.zsh          # Lazy loading functions
├── 50-keybindings.zsh   # Key bindings
├── 60-aliases.zsh       # Command aliases
├── 70-functions.zsh     # Custom functions
├── 80-integrations.zsh  # External tool integrations
└── 99-local.zsh         # Local overrides (NOT committed)

Main .zshrc sources all modules:

export ZSH="$HOME/.dotfiles/zsh"

for config_file in "$ZSH/zsh.d"/*.zsh(N); do
  source "$config_file"
done

Reference Files

| File | Contents | |------|----------| | modern-cli-tools.md | eza, bat, fd, rg, zoxide, starship, delta, lazygit | | shell-performance.md | Startup optimization, lazy loading pattern, profiling | | security-patterns.md | Credentials, file permissions, history security, .gitignore | | git-config.md | Multi-identity includeIf, aliases | | terminal-config.md | Kitty, Ghostty, tmux, neovim, Catppuccin theming |

Gotchas

Claude tends to suggest Powerlevel10k over Starship -- this setup uses Starship for cross-shell compat and speed
NVM lazy loading is critical -- eagerly sourcing nvm.sh adds 200-400ms to startup
Never alias over system commands unconditionally -- check tool exists first with command -v
The 99-local.zsh pattern means local overrides are NOT committed -- don't suggest editing them as shared config
File permissions on .env and git config files must be 600, not 644

Quick Reference

Performance: Shell startup <500ms, lazy load version managers, cache completions

Security: Never commit secrets, use .env + .env.example pattern, sensitive files chmod 600

Organization: Modular numeric-prefix structure, separate concerns, local overrides in 99-local.zsh

Modern Tools: eza (ls), bat (cat), fd (find), rg (grep), z (cd) -- check existence before aliasing

Git: Multi-config with includeIf, separate personal/work identities, commit signing recommended

Themes: Consistent Catppuccin Macchiato across all tools, single $THEME_FLAVOUR variable

Agent Skills: Dotfiles Best Practices

Install this agent skill to your local

Skill Files