Flatpak’s installed tests build Flatpak runtimes, among other things.
Upstream code does this by copying some programs on `PATH`
as well as some possible dependencies from host’s /usr.
We patch the code to use `nix-store --query --requisites`
to make the dependency discovery easier.
The Flatpak’s installed tests add `socat` to `PATH` and later run
`nix-store --query --requisites` on its location but it was failing with
error: path '/nix/store/qcyf7nq5vvfw32967sv4j6z190inrbrc-socat-1.7.3.4' is not valid
The issue occurred because, while the host Nix store is bind mounted into the test VM,
the VM’s store uses its own database that only contains the packages in the VM’s closure.
Since the test commands are not actually part of the VM but only passed through PTY,
the `flatpak.installedTests` derivation was not part of the VM’s closure, so `nix-store`
in the VM could not get information about its dependency `socat`.
Let’s make the `installedTests` of the tested package part of the test VM’s closure
by passing it as a global environment variable. This will also have the added benefit
that user no longer has to type the path when running the installed tests manually in the VM;
they can just use `gnome-desktop-testing-runner -d $TESTED_PACKAGE_INSTALLED_TESTS`,
which is much more conducive to tab completion.
This is analogous to #70447.
With security.lockKernelModules=true, docker commands result in the following
error without at least loading veth:
$ docker run hello-world
/nix/store/mr50kaan2vs4gc40ymwncb2vci25aq7z-docker-19.03.2/libexec/docker/docker: Error response from daemon: failed to create endpoint epic_kare on network bridge: failed to add the host (veth8b381f3) <=> sandbox (veth348e197) pair interfaces: operation not supported.
ERRO[0003] error waiting for container: context canceled
- Begin a new chapter "GPU Acceleration", this should also cover
VA-API, OpenGL, Vulkan, etc.
- Add a general blurb about OpenCL and how to check whether OpenCL
devices are found.
- Add a section about enabling OpenCL for AMD GPUs specifically.
This lets users do sneaky things before systemd starts, and
permanently affect the environment in which systemd runs. For example,
we could start systemd in a non-default network namespace by setting
the systemdExecutable to a wrapper script containing:
#!/bin/sh
ip netns add virtual
touch /var/run/netns/physical
mount -o bind /proc/self/ns/net /var/run/netns/physical
exec ip netns exec virtual systemd
_note: the above example does literally work, but there are unresolved
problems with udev and dhcp._
In the current implementation, there's no possibility to modify the default
parameter for keepalive. This is a number that indicates how frequently
keepalive messages should be sent from the worker to the buildmaster,
expressed in seconds. The default (600) causes a message to be sent to
the buildmaster at least once every 10 minutes.
If the worker is behind a NAT box or stateful firewall, these messages
may help to keep the connection alive: some NAT boxes tend to forget about
a connection if it has not been used in a while. When this happens, the
buildmaster will think that the worker has disappeared, and builds will
time out. Meanwhile the worker will not realize than anything is wrong.
This is required by (among others) Podman to run containers in rootless mode.
Other distributions such as Fedora and Ubuntu already set up these mappings.
The scheme with a start UID/GID offset starting at 100000 and increasing in 65536 increments is copied from Fedora.
The image tag can be specified or generated from the output hash.
Previously, a generated tag could be recovered from the evaluated
image with some string operations.
However, with the introduction of streamLayeredImage, it's not
feasible to compute the generated tag yourself.
With this change, the imageTag attribute is set unconditionally,
for the buildImage, buildLayeredImage, streamLayeredImage functions.
This was broken in 460c0d6 (PR #90431); now the nixos-unstable channel
should get unblocked.
vcunat modified this commit to use env-var instead of hardcoding /build
Per upstream:
> libvirtd-tcp.socket - the unit file corresponding to the TCP 16509
> port for non-TLS remote access. This socket should not be configured
> to start on boot until the administrator has configured a suitable
> authentication mechanism.
