spacemacs exclude packages

(defvar NAME-excluded-packages
  '(cmake-mode)
  '(csharp-mode)
  '(coffee-mode)
  '(scala-mode2)
  '(gist)
  '(git-gutter-fringe)
  '(git-messenger)
  '(git-timemachine)
  '(scss-mode)
  '(ruby-end)
  '(ruby-mode)
  '(ruby-test-mode)
  '(projectile)
  '(magit)
  '(magit-gitflow)
  '(js2-mode)
  '(json-mode)
  '(haskell-mode)
  '(gist)
  '(git-gutter-fringe)
  '(git-messenger)
  '(git-timemachine)
  '(ghc)
  '(erlang)
  "List of packages to exclude.")