PHP Warning: Constant already defined

[mbrodala]

Invoking dep yields a PHP warning:

$ dep --help
PHP Warning:  Constant  already defined in /.../vendor/deployer/dist/dep on line 5

Warning: Constant  already defined in /.../vendor/deployer/dist/dep on line 5
Description:
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Usage:
...

This issue does not occur with deployer/deployer.

Environment:

$ php --version
PHP 8.0.14 (cli) (built: Dec 20 2021 21:22:57) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.14, Copyright (c) Zend Technologies
    with Zend OPcache v8.0.14, Copyright (c), by Zend Technologies