Cannot use 'PhpParser\Node\Scalar\String' as class name

[jedahan]

When trying to run psysh in a test ( psysh.org ), I get this error:

Fatal error: Cannot use 'PhpParser\Node\Scalar\String' as class name as it is reserved in /usr/share/composer/vendor/nikic/php-parser/lib/PhpParser/PrettyPrinter/Standard.php on line 86

❯ pake unit_nosetup SomeTest.php
>> exec         ENVIRONMENT=testing TMP_L…est.php || echo 'Test Failure'
#!/usr/bin/env php
PHPUnit 5.0.10 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.0.3 with Xdebug 2.4.0RC4
Configuration: /home/jdehan/dev/project/tests/phpunit/phpunit.xml


Starting test 'Test_HelperTest::testValid'.


Fatal error: Cannot use 'PhpParser\Node\Scalar\String' as class name as it is reserved in /usr/share/composer/vendor/nikic/php-parser/lib/PhpParser/PrettyPrinter/Standard.php on line 86
Test Failure

Any suggestions on how to track this down better?

[nikic]

You're probably using a very old version of psysh. Can you try updating it?

[jedahan]

ok weird, installing it locally didn't work, but globally did. Looks like my dev environment is all sorts of funky. Thanks for the quick reply!