#### 11.2.26 package-used-by-list [Function] ¶

`package-used-by-list` package ⇒ used-by-list

#### Arguments and Values:: ¶

package—a package designator.

used-by-list—a list of package objects.

#### Description:: ¶

package-used-by-list returns a list of other packages that use package.

#### Examples:: ¶

     (package-used-by-list (make-package 'temp)) ⇒  ()
     (make-package 'trash :use '(temp)) ⇒  #<PACKAGE "TRASH">
     (package-used-by-list 'temp) ⇒  (#<PACKAGE "TRASH">)

#### Exceptional Situations:: ¶

Should signal an error of type type-error if package is not a package.

#### See Also:: ¶

use-package [Function] , unuse-package [Function]