This also stops using -1 as auth failed, and moves all failure statuses
to positive numbers. It looks like Exiting with -1 ends up setting the
status to 255 on exit, but then in the locker, it sees this as 255 and
not -1, since things get coerced into 32-bit integers.
We never quit the main loop, but if something odd happens that causes it
to quit outside our control, ensure that we don't return the "auth
success" status code.
Changes the auth failed label into an auth status label, and prints a
dot once every half second while authenticating.
Also reduces the post-auth-failed pause to 1 second; 2 seconds is longer
than it seems.
If the user presses enter or escape in order to get the unlock dialog to
show in the first place, forwarding that event to the dialog will only
cause it to close immediately.
Also took the opportunity to clean up the dependencies where I have my
own patches. I'm now using the cargo 'patch' section so that the
dependencies specified in the individual Cargo.toml files are clean.
By default it'll look at your environment to try to figure out which
display manager is used in order to start a new session. We first try
the org.freedesktop.DisplayManager dbus interface, and if that fails,
inspect XDG_SESSION_DESKTOP to try to figure out which display manager
is running.
The user can also still specify the correct display manager, or a custom
command.
I gave up on getting it to build on bullseye, as its cargo/rustc is too
old for the 2021 edition. Building newer deb packages of rust is
apparently a difficult, manual process. I tried installing rustup and
pulling the latest compiler, but that failed with strange errors that I
am tired of debugging.
I don't think it's even possible to use gtk4 to build a dialog, as gtk4
has dropped GtkPlug/GtkSocket and doesn't support embedding anymore.
They also don't seem to give access to enough internals so I can build
it myself.
This includes an abortive attempt to do a gtk4 dialog (which I don't
think is possible, as gtk4 doesn't allow embedding toplevels anymore),
and an iced dialog, which I just never started writing.
