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composer update strips composer.lock of package without indication or reason · Issue #7268 · composer/composer · GitHub
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composer update --lock also SEEMS to update dev packages, but doesn't really · Issue #9812 · composer/composer · GitHub
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laravel - How can I resolve "Your requirements could not be resolved to an installable set of packages" error? - Stack Overflow
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Developer Quick Tips: Updating Modules Using "composer update" vs "composer require" | Hook 42 SF Bay Area Drupal Experts and WordPress Experts
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