Satis VS Composer Merge Plugin

Note: Satis is a local repo repository — the pro code is likely not on github. They set up their own system to handle these repositories outside of github/packagist.

If you want/need to self-host this internally, you can look at satis to create and self-host a repository. Since you need to add the packages manually, your security team can vet the code before adding it. There is a post on gitconnected on how to set this up: https://levelup.gitconnected.com/how-to-host-your-own-private-packagist-for-free-or-extremely-cheap-faf44eca3647

We have a private Satis instance. Our ITSec team reviews all packages before we add them to Satis. packagist.com is available for us but the CI-CD servers can reach only the private Satis.

My team and I use Satis to accomplish that. It's hosted on our servers and we can easily release new versions. Dependabot can even upgrade the dependencies if new ones are detected.

Composer supports multiple types of custom respositories, so you can host your own repository (with something like Satis), pay for a packagist.com private repository or even use a VCS repository to fetch packages directly from your private GIT repos.

composer-merge-plugin (unfortunately no composer 2 support yet) and a local, gitignored file for dependencies like that should do the trick.