sepBy package:Cabal-syntax

sepBy :: Alternative m => m a -> m sep -> m [a]
Cabal-syntax Distribution.Compat.Parsing
sepBy p sep parses zero or more occurrences of p, separated by sep. Returns a list of values returned by p. 
commaSep p  = p `sepBy` (symbol ",")
sepByNonEmpty :: Alternative m => m a -> m sep -> m (NonEmpty a)
Cabal-syntax Distribution.Compat.Parsing
sepByNonEmpty p sep parses one or more occurrences of p, separated by sep. Returns a non-empty list of values returned by p.