The reason to patch QEMU is that with latest Nix, tests like "printing"
or "misc" fail because they expect the store paths to be owned by uid 0
and gid 0.
Starting with NixOS/nix@5e51ffb1c2, Nix
builds inside of a new user namespace. Unfortunately this also means
that bind-mounted store paths that are part of the derivation's inputs
are no longer owned by uid 0 and gid 0 but by uid 65534 and gid 65534.
This in turn causes things like sudo or cups to fail with errors about
insecure file permissions.
So in order to avoid that, let's make sure the VM always gets files
owned by uid 0 and gid 0 and does a no-op when doing a chmod on a store
path.
In addition, this adds a virtualisation.qemu.program option so that we
can make sure that we only use the patched version if we're *really*
running NixOS VM tests (that is, whenever we have imported
test-instrumentation.nix).
Tested against the "misc" and "printing" tests.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
It was lacking the dbus configuration to bind to
org.freedesktop.DisplayManager, and it was passing fixed TTY/display
numbers to the X server (see 9be012f0d4d9b6bca35416ec89d5a40be4556896).
Using the example before this commit resulted in the following error:
```
error: value is a string while a list was expected, at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/misc/nix-daemon.nix:349:37
```
* Sync systemd units with upstream. Upstream uses SIGUSR2 instead of SIGHUP
to reload the clamd service.
* Convert freshclam service to a oneshot service activated by a systemd timer.
This way we can make clamd wait for freshclam to finish fetching the virus
database before failing to start if the database doesn't exist yet.
* Fixes console tools to work as expected as they require hardcoded config
file locations.
The old etcd port 4001 is no longer enabled by default in etcd 3.
The new port is 2379 and is officially assigned by IANA.
There were still some services left that expect etcd on port 4001 by default.
This changes the default to 2379 everywhere.
It should not cause problems for users as the etcd by nix does listen on the new port only by default anyway.
