class Sprockets::Base

def dependencies_hexdigest(paths)

Returns a String SHA1 hexdigest.

paths - Array of filename or directory paths.

Internal: Compute hexdigest for a set of paths. 
def dependencies_hexdigest(paths)
  digest = Digest::SHA1.new
  paths.each { |path| digest.update(file_hexdigest(path).to_s) }
  digest.hexdigest
end