php dependency_management ai_generated true

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires package/name ^2.0 -> satisfiable by package/name[2.0.0] - package/name 2.0.0 requires other/dep ^3.0 -> found other/dep[3.0.0] but it conflicts with your root composer.json require (^2.0)

ID: php/composer-dependency-conflict

Also available as: JSON · Markdown
82%Fix Rate
85%Confidence
100Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2 active — — —

Root Cause

Composer dependency conflicts occur when two or more packages require incompatible versions of a shared dependency. This is especially common when upgrading major versions of frameworks or when mixing packages from different ecosystem generations.

generic

Workarounds

  1. 85% success Use 'composer why' and 'composer depends' to find the conflict chain, then update constraints 
    Run 'composer why package/name' to see why each version is required. Run 'composer depends other/dep --tree' to visualize the dependency chain. Adjust version constraints in composer.json to allow compatible versions. Use 'composer update --with-dependencies' to re-resolve.
  2. 80% success Use composer's replace/provide fields or --with-all-dependencies to resolve the conflict 
    If the conflict is between two packages that provide the same interface, add a 'replace' field in composer.json to tell Composer which package supersedes the other. If one package is a fork, use 'replace' to indicate it provides the same functionality. Use 'composer require package/name:^2.0 --with-all-dependencies' to let Composer re-resolve the full dependency tree.

Dead Ends

Common approaches that don't work:

  1. Using --ignore-platform-reqs to bypass the conflict 85% fail

    This flag only bypasses platform requirements (PHP version, extensions), not package version conflicts. Even if it did work, ignoring requirements leads to runtime errors when incompatible code is loaded together.

  2. Manually editing composer.lock to force a version 90% fail

    Editing composer.lock directly corrupts the dependency graph integrity. Composer will detect the hash mismatch and refuse to install, or worse, install an inconsistent set of packages that fail at runtime.

Error Chain

Leads to:
Preceded by:
Frequently confused with: