fix(zsh:env): add fallback file path when setting env DOTDIR

  ## what
  - add fallback file path when setting env DOTDIR

  ## how

  ## why
  - when running `.zshenv` in a `~/.config/zsh` directory, it's not in a
    git repo, so the command would fail

  ## where
  - ./tools/zsh/.zshenv

  ## usage

  ## issue or pull request

tools/zsh/.zshenv

@@ -15,7 +15,7 @@ export XDG_CACHE_HOME="$HOME/.cache"         # Where user-specific non-essential
 # -------------------------------------------------------------------------------------------------#
 
 # DIRECTORIES
-export DOTDIR=$(git rev-parse --show-toplevel)                      # used by zshenv and ansible (to link files, etc)
+export DOTDIR=$(git rev-parse --show-toplevel 2> /dev/null || echo "$HOME/dotfiles")  # used by zshenv and ansible (to link files, etc)
 export ZDOTDIR="$XDG_CONFIG_HOME/zsh"
 export ZSCRIPTDIR="$DOTDIR/tools/zsh"
 export HISTFILE="$XDG_STATE_HOME/zsh/history"                       # history