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Table of Contents
What Was package-versions-deprecated Used For?
Why Is It Deprecated?
Should You Remove It?
Final Thoughts
Home Development Tools composer What is the composer/package-versions-deprecated package?

What is the composer/package-versions-deprecated package?

Jul 09, 2025 am 12:08 AM
composer

composer/package-versions-deprecated was used to resolve dependency version conflicts in PHP projects, but is now deprecated. 1. Before Composer 2.0, this package provided a method to define version constraints at the package level, so that developers can declare compatibility rules between different packages, thereby reducing conflicts caused by different dependencies requiring different versions of the same library; 2. Since Composer 2.0, its functions have been replaced by built-in support, including platform coverage and complex version constraints; 3. At present, it still has many reasons for the project not being updated, old dependency references or not cleaning up old tools; 4. If you use Composer 2 and above, the package can be safely removed, and it should be checked whether composer.json depends on its rules, test application stability, and update old dependencies; 5. In summary, the package is no longer necessary, and the project can be kept clean after deletion and does not affect the function.

If you've come across the composer/package-versions-deprecated package while working with PHP and Composer, you might be wondering what it is and why it shows up in your project. In short, this package was used to handle version constraints for dependencies in a way that made it easier to manage conflicts — but it's now deprecated and replaced by better alternatives.


What Was package-versions-deprecated Used For?

Before Composer 2.0, handling version conflicts between dependencies could get messy. This package provided a way to define version constraints at the package level rather than just per dependency. It allowed developers to declare which versions of a package should be compatible with others, reducing issues when multiple packages required different versions of the same library.

For example:

  • Package A requires monolog/monolog: ^1.0
  • Package B requires monolog/monolog: ^2.0

Without something like package-versions-deprecated , Composer would often throw an error trying to resolve these differences. With it, you could define compatibility rules so Composer had more flexibility in resolving dependencies.


Why Is It Deprecated?

Starting from Composer 2.0, this functionality became built-in through Composer's native platform overrides and complex version constraints support . That means the features once handled by package-versions-deprecated are now part of Composer itself — making the package unnecessary.

You'll usually see it still hanging around because:

  • The project hasn't been updated in a while
  • Some older dependencies still reference it
  • Developers haven't cleaned up old dev tools

Should You Remove It?

Yes, if you're using Composer 2 or newer (which most people are), you can safely remove this package. Just run:

 composer remove composer/package-versions-deprecated

No need to replace it — Composer handles all that logic internally now.

A few things to check before removing:

  • Make sure your composer.json doesn't have any custom rules relying on it
  • Test your app after removal to confirm nothing breaks
  • Update any outdated dependencies that may still reference it

Final Thoughts

The composer/package-versions-deprecated package served a real purpose back when Composer had limited tools for managing complex version dependencies. But now that Composer has evolved, keeping it around is just extra baggage. Removing it won't hurt anything — and it keeps your setup cleaner.

Basically that's it.

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