WHAT=table.concat(arg,' ')
for d in path.dirs 'examples' do
  if not d:match 'big1$' then -- don't bother with the big one for tests...
     lake(d,WHAT)
  end
end
if WHAT:match'clean$' then -- let's be really thorough
  for pat in list {'.spec','.d','.o','.obj'} do
    utils.remove(lake.expand_args('*',pat,true))
  end
end