{ ... }: let defaultShellAliases = { l = "ls -alh"; ducks = "du -cksh * | sort -hr | head -n 15"; }; in { programs.zsh = { enable = true; enableCompletion = true; autosuggestion.enable = true; syntaxHighlighting.enable = true; shellAliases = defaultShellAliases; oh-my-zsh = { enable = true; plugins = [ "git" ]; theme = "fishy"; }; }; }