Self-service

• I'd be willing to implement a fix

Describe the bug

Thank you for officially introducing the catalogs feature to Yarn :)

I've encountered an issue while using catalogs in Yarn version 4.10.3. One of the Yarn plugins I'm using supports a custom protocol using the reduceDependency hook. When I use this custom protocol in the catalogs defined in .yarnrc.yml and run yarn install, I get the error "xxx isn't supported by any available resolver".

The underlying issue is that the plugin doesn't implement its own resolver. That said, since the plugin works correctly without catalogs, perhaps catalogs could be updated to support this type of plugin implementation?

To reproduce

Assuming the files below are in the same directory, this issue can be reproduced by running yarn plugin import ./plugin-custom-protocol.js followed by yarn install.

package.json

{
  "name": "name",
  "packageManager": "[email protected]",
  "dependencies": {
    "lodash": "catalog:",
    "react": "catalog:"
  }
}

.yarnrc.yml

catalog:
  lodash: "npm:4.0.0"
  react: "custom-protocol:19.0.0"

plugin-custom-protocol.js

module.exports = {
  name: 'plugin-custom-protocol',
  factory: function(require) {
    const {structUtils} = require('@yarnpkg/core');

    return {
      default: {
        hooks: {
          reduceDependency(dependency, project) {
            if (!dependency.range.startsWith('custom-protocol:')) {
              return dependency;
            }

            const version = dependency.range.slice('custom-protocol:'.length);

            return structUtils.makeDescriptor(
              structUtils.makeIdent(dependency.scope, dependency.name),
              `npm:${version}` // Just custom-protocol maps to npm
            );
          }
        }
      }
    };
  }
};

This issue can be reproduced by cloning this repository and running yarn install.

Environment

System:
    OS: macOS 15.3.1
    CPU: (8) arm64 Apple M2
Binaries:
    Node: 22.18.0 - /private/var/folders/c9/kkczqw7d28bf31_wkkzmrhpr0000gn/T/xfs-2103861d/node
    Yarn: 4.10.3 - /private/var/folders/c9/kkczqw7d28bf31_wkkzmrhpr0000gn/T/xfs-2103861d/yarn
    npm: 10.9.3 - ~/.local/share/nvm/v22.18.0/bin/npm
    Deno: 2.5.2 - ~/.deno/bin/deno

Additional context

No response