boto/botocore — pull request #4 by paulegan (2013-01-03 14:36:55+00:00)
Title: Added support for reading AWS_CREDENTIAL_FILE

Perhaps there was a good reason to omit support for the AWS_CREDENTIAL_FILE environment variable from botocore? It seems a strange omission. Anyway, here's a small patch to add this, making sharing credentials with other command line apps much easier.