Compatibility Issue with robloach/component-installer and Composer 2.x

[aarek-eng]

Description:

Hello handlebars.js maintainers,

I've encountered a compatibility issue when integrating handlebars.js into a Nextcloud app project, specifically related to the package's dependency on robloach/component-installer. This dependency appears to cause conflicts with Composer 2.x, leading to installation and update issues in environments that have migrated to Composer's latest version.

Issue Overview:

• Project Context: Self-hosted Nextcloud server application development.
• Environment: Fedora OS, PHP 8.2.16, Composer 2.7.1
• Dependency Conflict: robloach/component-installer is required by handlebars.js, which is flagged as abandoned and incompatible with Composer 2.x. Composer suggests using oomphinc/composer-installers-extender instead.
• Error Message: "Package robloach/component-installer is abandoned, you should avoid using it. Use oomphinc/composer-installers-extender instead."

Impact:

The reliance on an abandoned installer package causes deprecation warnings and complicates the installation process in modern PHP environments, potentially affecting a wide range of projects that include handlebars.js as a dependency.

Encountered Issues:

1. Composer Update Messages:

   • Composer indicates that robloach/component-installer is abandoned and recommends using oomphinc/composer-installers-extender.
   • During updates and installations, Composer prompts to trust and execute code from robloach/component-installer, highlighting compatibility concerns with Composer 2.x.

2. Dependency Resolution Failure:

   • Attempts to switch to oomphinc/composer-installers-extender and update dependencies result in conflicts due to the hard dependency on robloach/component-installer.

[jaylinski]

I actually removed this dependency some time ago: components/handlebars.js@641078e

I think the change didn't make it to v4.7.8 though. You can work around this issue by installing the dev-master-release for now:

composer require components/handlebars.js:dev-master