Install your composer package somewhere outside vendor

And I don’t mean change the vendor folder name, that’s easy. I mean getting one package in a custom location, whereas the rest still go into vendor.

This will only work with packages that require composer/installers, so if it isn’t your own package and they don’t require that in, then you can stop reading.

Still here? Awesome. In your vendor package, you need to add the installer

composer require composer/installers

Now in your composer.json, change (or add) the type. The package we just required in is actually to help various CMS’es and frameworks, so you must supply a valid type. Thankfully, it doesn’t matter which we choose, as we override the install path anyway.

"type": "ppi-module",

Commit that, and then go to your main project. In the composer.json, add the following:

"extra": {
"installer-paths": {
"/some/custom/path": ["your/package"]
}
}

Now when you run composer install, you’ll see everything but your package in the vendor folder, and your custom package in its custom location! 😀