Press Control-h v, type load-path
and press Enter. Emacs will print the paths from where it loads .el files. If the directory where your cluck.el
resides isn't there, add it with the following line in your initialization file:
(add-to-list 'load-path "~/.emacs.d/cluck/")
This assumes you have your Cluck files inside ~/.emacs.d/cluck/