Do we need to bring AWS_IAM_CREDENTIALS_URL support back?

[Xuanwo]

Sccache used to support auth by:

export AWS_IAM_CREDENTIALS_URL=http://taskcluster/auth/v1/aws/s3/read-write/${bucket}/?format=iam-role-compat

Do we need to bring this feature back? Maybe use SCCACHE_AWS_CREDENTIALS_URL? AWS doesn't have env AWS_IAM_CREDENTIALS_URL by native, it's better to add a new one under SCCACHE_ prefix.

[sylvestre]

yes please

[Xuanwo]

By adding a SCCACHE_AWS_CREDENTIALS_URL?

[drahnr]

I think that'd be the preferred one