Sorry, I mixed that up. It was named Canonical partner or something like that and contained only binary packages. Debian contrib
are free packages with dependencies in non-free
. While non-free
are packages with not DFSG compliant source code (but with source code).
OK, TY. I’ve thought, there were just downloader packages, containing scripts to download the firmware binary from the device manufacturer and install it on the system, like e.g. the one for the Broadcom wireless driver.