Handle packages with private repositories

[kdambekalns]

When having packages on Packagist that are using a private GitLab repository, we get Bad credentials messages every hour when updating the package marketplace on neos.io…

The message is coming from authorizeOAuthInteractively() in the GitLab class of Composer, AFAICT.

[Sebobo]

We could either catch the error and either:

• mark the package as private.
• skip them (and ignore them next time?)
• something else

[Sebobo]

@kdambekalns but those messages seem to appear also for our own packages?

[kdambekalns]

🤔 Indeed, looks like it. I have to admit I didn't dig any deeper…