Change the Nixery configuration to use the plain nixpkgs package path
instead of the depot path. AFAIK, nobody uses this to fetches depot
packages at the moment - but plenty of people fetch non-depot
packages.
This means that Nixery is cache-busted less often (previously on every
commit => every deploy).
We'll figure out another way to have a depot Nixery later.
Change-Id: Iba632333346181c3d2ce992fbab396ed0d9f86aa
This sets up a very simple Nixery instance with some things lacking:
* no support for garbage-collecting image fragments (yet)
* no popularity setup
The plan is to use this to get the ball rolling on a separate
domain (e.g. images.tvl.fyi), iron things out and then look into
flipping over nixery.dev
Change-Id: Ic594809f9d487fec7a0f632d608752a3f9c61315
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3280
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: sterni <sternenseemann@systemli.org>
