[FEATURE REQUEST] Fail when COMPOSER_AUTH is malformed

[aurelijusrozenas]

Hi,

There have been multiple when I stepped on this rake and got hit in the face: composer install does not work for private repos. And then I go debugging ssh connections, deployer scripts, docker configuration etc. only to find somewhere in the logs:

COMPOSER_AUTH environment variable is malformed, should be a valid JSON object

And then everything is obvious and the fix is around the corner.

This time I am thinking maybe there is a better way? One solution could be to make composer install (or maybe all composer commands?) to fail when COMPOSER_AUTH is malformed? O maybe add parameter to make it fail?
It would be nice if this never happens to me or my colleague again. If COMPOSER_AUTH is set, it should valid otherwise what's the point of setting it, right?

What do you think? 👨‍🎤

[Seldaek]

Yes I can see if you set it you'd not want it to have it be ignored.. Scheduling for 2.5 tho as it could kinda come as a surprise to people in a patch release.