make dircolors command safe

.exports

@@ -13,8 +13,9 @@ export HOMEBREW_CASK_OPTS="--appdir=/Applications"
 # here's LS_COLORS
 # github.com/trapd00r/LS_COLORS
 command -v gdircolors >/dev/null 2>&1 || alias gdircolors="dircolors"
-eval "$(gdircolors -b ~/.dircolors)"
-
+if which gdircolors > /dev/null; then
+	eval "$(gdircolors -b ~/.dircolors)"
+fi
 
 # fzf should be populated via the silver searcher (to respect gitignore and be faster): https://github.com/junegunn/fzf#respecting-gitignore
 # note.. without `ag` this is a good fallback: export FZF_DEFAULT_COMMAND='fd --type f'