yasnippet recently switched to using cl-lib (as recommended by the Emacs manual). haskell-snippets implicitly depends on cl.el. Users who do not load any packages that require cl will see errors like the following:
{-# OPTIONS_GHC [yas] elisp error: Symbol's function definition is void: some #-}
yasnippet recently switched to using cl-lib (as recommended by the Emacs manual). haskell-snippets implicitly depends on cl.el. Users who do not load any packages that require cl will see errors like the following: