Thanks, see 02ceb74 tho for some review/changes.

This is awesome!

However it creates this exception when there is a dependency using a git URL:

GitDriver requires a usable cache directory, and it looks like you set it to be disabled

Is there any way that the cache is still used when it's absolutely necessary? That would avoid the exception while still storing as little as possible on disk.

If you only care about disk space I think it'd be easiest to run it normally and then wipe the cache dir after your build is done.

🤔 that's a good idea. I run Composer (and php-cs-fixer for https://prettyci.com/) on AWS Lambda, where I only have limited space in the /tmp folder. That would work, unless there's more of 500mb of composer cache, but I don't think that happens often! Thanks!

500mb sounds like a lot for a single install or update cycle.