PHPStan throws fatal exception when run with other dependencies that bring in nikic/php-parser #3237
Description
Bug report
PHPStan version: 0.12.20
PHP version: 7.4.5
Composer version: 1.10.5
Unable to run the latest release of phpstan when another package that provides nikic/php-parser is present
Code snippet that reproduces the problem
mkdir project-root \
&& cd project-root \
&& composer init -n \
&& composer require --dev phpstan/phpstan phpmetrics/phpmetrics \
&& vendor/bin/phpstan
Output:
Using version ^0.12.20 for phpstan/phpstan
Using version ^2.6 for phpmetrics/phpmetrics
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 3 installs, 0 updates, 0 removals
- Installing phpstan/phpstan (0.12.20): Loading from cache
- Installing nikic/php-parser (v4.4.0): Loading from cache
- Installing phpmetrics/phpmetrics (v2.6.2): Loading from cache
Writing lock file
Generating autoload files
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PHP Fatal error: Cannot declare class PhpParser\NodeVisitorAbstract, because the name is already in use in phar:///project-root/vendor/phpstan/phpstan/phpstan/vendor/nikic/php-parser/lib/PhpParser/NodeVisitorAbstract.php on line 9
Fatal error: Cannot declare class PhpParser\NodeVisitorAbstract, because the name is already in use in phar:///project-root/vendor/phpstan/phpstan/phpstan/vendor/nikic/php-parser/lib/PhpParser/NodeVisitorAbstract.php on line 9
Expected output
I expect the command to run and display available usages or help