anchor.diff:  (defun transpiler-can-import? (tr name)
     (& (transpiler-import-from-environment? tr)
        (function? (symbol-function name))
  +     (not (builtin? name))
        (not (transpiler-defined? tr name))))
   	
   (defun transpiler-add-wanted-function (tr x)
  
positive.code:        (transpiler-add-wanted-function *transpiler* .x.)
         (transpiler-macroexpand *transpiler* `(symbol-function (%quote ,.x.))))
       x))
  
  (defun transpiler-import-universe (tr)
    (map [transpiler-add-wanted-function tr _] (reverse *defined-functions*)))
  
negative.code: 	          (transpiler-wanted-variables tr))))
  
  (defun transpiler-import-from-environment (tr)
    (with (funs     (transpiler-import-wanted-functions tr)
           exported (transpiler-import-exported-closures tr)
           vars     (transpiler-import-wanted-variables tr))
      (? (| funs exported vars)
         (+ funs exported vars (transpiler-import-from-environment tr))
         (transpiler-delayed-var-inits tr))))
  