How to Fix Dependency Conflict in Perl

The Dependency Conflict in Perl can stop your project dead in its tracks. Let's break down what causes it and how to resolve it quickly.

Understanding the Problem

Dependency conflicts arise when two or more packages in your Perl project require incompatible versions of the same library. The package manager cannot find a single version that satisfies all constraints.

Solution

The key is to pin exact versions in your cpanfile and use Carton for reproducible dependency installs:

# cpanfile - pin exact versions
requires 'Mojolicious', '== 9.33';
requires 'DBI', '>= 1.643, < 2.0';

# Install with version pinning
# cpanm --installdeps .
# Or use Carton for reproducible installs
# carton install

Common Pitfall

Many developers waste time on this by looking in the wrong place. The error message can be misleading — focus on the Perl configuration rather than the application logic itself. This is also a good opportunity to review your Perl project's error handling strategy and make sure similar issues are caught early.

Confirming It Works

To confirm the fix is working, check your Perl application logs for any remaining error traces. You should see clean request/response cycles without the previous error. Deploy to a staging environment to verify the fix holds under production-like conditions.

Going Forward

Tools like [Bugsly](https://bugsly.dev) can catch these Perl errors in real time, giving you stack traces and context to fix issues faster.