~kennylevinsen/seatd

meson: Support building builtin without seatd

The builtin backend relies on the seatd backend implementation. When
builtin was enabled without seatd, compilation would fail due to the
implementation not being included.

Include the implementation if either seatd or builtin is enabled.
libseat/seatd: downgrade ENOENT log to info

The socket is expected not to be found if seatd is not running.
In general other backends will be attempted after seatd. There is
already an error message in case no backend can be started.
contrib/systemd: Use a different group

"video" was used for convenience in the example, but a dedicated group
is preferable so that a user does not gain the ability to bypass the
seat manager and open devices directly.
build: set pkgconfig/dependency variables for features

This allows libseat users to e.g. advise people to chmod a+s the
executable if libseat is built with the builtin backend.

While bumping the Meson version, adjust the scdoc logic to avoid
the following warnings:

    WARNING: Project targeting '>=0.56.0' but tried to use feature deprecated since '0.56.0': Dependency.get_pkgconfig_variable. use Dependency.get_variable(pkgconfig : ...) instead
    WARNING: Project targeting '>=0.56.0' but tried to use feature deprecated since '0.55.0': ExternalProgram.path. use ExternalProgram.full_path() instead
build: disable logind on -Dauto_features=disabled -Dlogind=auto

Setting auto_features=disabled is supposed to disable all optional
dependencies. Since we aren't using a feature option here, we need
to manually add logic to disable logind in this case.
build: don't allow "auto" for seatd, builtin, server and examples

These features don't have any dependencies, so "auto" doesn't make
sense.
build: don't explicitly search for sh

This removes the "Program sh found" line in the build logs, and
should not change anything else.
build: fix logind feature summary when auto-detected

If -Dlogind=auto but systemd/elogind isn't available,
logind_provider would get set to the last item of the foreach loop.
This would incorrectly report "systemd: YES".
build: add explicit logind provider option, auto-detect by default

Allow package maintainers to explicitly select a logind provider
by passing -Dlogind=systemd or -Dlogind=elogind. In case both are
available (e.g. for distributions which support both), this makes
it possible to gte deterministic behavior.

By default, auto-detect the logind provider. That way, users which
have systemd or elogind installed get the backend built by default.
meson: make 'logind' var always available
ci: Use 'auto' for arch linux logind
Avoid a clang-format quirk

clang-format wants to put the terminating NULLs on the same line as the
noop backend when it doens't have any immediate non-NULL neighbors.

Add a newline to stop it.
meson: declare libseat dependency

This can be used by parent projects when seatd is a subproject:

    libseat = dependency('libseat', fallback: ['seatd', 'libseat'])
Add no-op session

This is useful for headless testing, for instance with VKMS:

    modprobe vkms
    export WLR_DRM_DEVICES=/dev/dri/card1
    export WLR_BACKENDS=drm
    export LIBSEAT_BACKEND=noop
    sway

We don't need any of the VT handling in this case.
5ad91ae9 — Jan Beich a month ago
client: enable cr_pid on FreeBSD >= 12.3

https://cgit.freebsd.org/src/commit/?id=925f44f33862908f9a2e72520a17af148c7d0db5
https://cgit.freebsd.org/src/commit/?id=2b61bda2c75f30f6eadd18fb891fd885e4c8d19d
readme: Remove alpha label
contrib: Add Documentation to systemd unit
ci: Remove unnecessary env vars
ci: Reduce test runs from 5 to 2
meson: Disable examples by default
Correct minor misspellings
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