bcachefs now supports snapshots so we need the latest version to use
them. Additionally, it appears to build on AArch64 so I've removed the
x86 requirement.
The existing tests for HDFS and YARN only check if the services come up and expose their web interfaces.
The new combined hadoop test will also test whether the services and roles work together as intended.
It spin up an HDFS+YARN cluster and submit a demo YARN application that uses the hadoop cluster for
storageand yarn cluster for compute.
Don't worry, it's is true by default. But I think this is important to
have because NixOS indeed shouldn't need Nix at run time when the
installation is not being modified, and now we can verify that.
NixOS images that cannot "self-modify" are a legitamate
use-case that this supports more minimally. One should be able to e.g. do a
sshfs mount and use `nixos-install` to modify them remotely, or just
discard them and build fresh ones if they are run VMs or something.
The next step would be to make generations optional, allowing just
baking `/etc` and friends rather than using activation scripts. But
that's more involved so I'm leaving it out.
The primary use case is tools like sops-nix and agenix to restart units
when secrets change. There's probably other reasons to restart units as
well and a nice thing to have in general.
The paperless project has moved on to paperless-ng and the original
paperless package in Nixpkgs has stopped working recently (due to
version incompatibility with the providede Django package).
Instead of investing more time into the old module we should migrate all
users to the new module instead.
I expect it suffices that the channel only blocks on one firefox ESR
test - the one for the default ESR. I didn't want to have the
information about the default in two places, so either of the tests will
be evaluated twice (but to the same *.drv I hope).
Vladimír Čunát