This commits deprecates `services.xserver.libinput` for multiple
settings, one for each kind of device:
- `services.xserver.libinput.mouse`
- `services.xserver.libinput.touchpad`
Looking at `man 4 libinput`, they basically have the same options so I
simply replicated them, even if some options doesn't make sense for
mouse (`tapping` for example).
With this commit this is now possible:
```nix
{
services.xserver.libinput = {
enable = true;
mouse = {
accelProfile = "flat";
};
touchpad = {
naturalScrolling = true;
};
};
}
```
And you will have a mouse with no natural scrolling but with accel
profile flat, while touchpad will have natural scrolling but accel
profile adaptative (default).
It is possible to support more device types
(tablets/keyboards/touchscreens), but at least looking at the
libinput manual for those devices it doesn't seem that it has any
configuration options for them. They can still be configured using
`services.xserver.inputClassSections` though, and this will work now
since there is no rule by default that matches them.
Closes issue #75007, while also making configuration of mouses and
touchpads using Nix attrs possible like said in PR #73785.
On numerous occasions I have seen users mistake this
module as libinput because it being called "multitouch"
and them being unaware that the actually module they want
is libinput. They then run into several decrepit bugs due
to the completely out-of-date nature of the underlying package.
The underlying package hasn't been changed to an up-to-date
fork in a period of 8 years. I don't consider this to be production quality.
However, I'm not opposed for the module being readded to NixOS
with new packaging, and a better name.
Instead of assign the libinput options to touchpad devices only, it
should be appied by any device using libinput.
Due to the fact that `40-libinput.conf` already defines libinput as
driver for any detected input device, we can use `MatchDriver` to appy
options.
The default synaptics functionality (without this file) is limited for
clickpads: the right soft button area in the bottom right isn't active by
default, so the entire pad generates left-clicks. There is no way to
right-drag.
This file defines soft button areas and provides some matching rules.
These settings don't conflict with the synaptics options that NixOS
provides.
