Guix - Surface

If you require the libwacom udev rules and hdwdb files add the following services to your system services.

 (udev-rules-service 'libwacom-surface libwacom-surface)
 (udev-hardware-service 'libwacom-surface libwacom-surface)

The surface/packages/touchscreen includes a replace-libwacom function which will graft libwacom-surface as a replacement of libwacom onto a package depending on libwacom.

Note: The replacement libwacom-surface is called wcomsrfc such that it matches the length of libwacom and make grafting possible.

IPTSD might not work properly on systems without systemd.

Add the iptsd service to config.scm.

 (use-modules (surface services touchscreen))
 (operating-system
 ;;....
 (services (append
 (list
 (service iptsd-service-type)
 ;; ...
 )
 %desktop-services))
 ;; ---- 
 )

You can modify the iptsd condiguration by adding e.g.

 (iptsd-configuration
 (touchscreen-disable-on-palm? #t)
 (touchscreen-disable-on-stylus? #t)
 ;; ...
 )

to the service declaration. The name of the keys mimic the original key names but have the section as a prefix and the are 'guixified'. The list is available in surface/services/touchscreen.scm.

Starting with iptsd@3 iptsd can also handle the touchpad, if your device requires it. To enable this add

(iptsd-types '("touchscreen" "touchpad"))

to the iptsd-configuration.

The shepherd should automatically restart the service if it exits, which could happen after suspending.

If you encounter any touchscreen related problems try restarting the shepherd-service manually:

sudo herd restart iptsd

This will refind the hidraw device for iptsd.

Add the surface-dtx-daemon service to config.scm.

 (use-modules (surface services misc))
 (operating-system
 ;;....
 (services (append
 (list
 (service surface-dtx-daemon-service-type)
 ;; ...
 )
 %desktop-services))
 ;; ----
 )

The daemon is configured with the surface-dtx-daemon configuration. Changing the various scripts can be done by setting the fields

• detach-handler-exec
• detach-abort-handler-exec
• attach-handler-exec to file like objects (i.e. local-files, plain-files, computed-files) for the scripts you'd like to be executed. These will get symlinked to /etc/surface-dtx/attach.sh, etc. It defaults to the upstream defaults.

The optional surface-dtx-userd service for notifications is availabable as a Guix Home service home-surface-dtx-userd-service-type:

 (use-modules (surface home services misc))
 (home-environment
 ;; ...
 (services (list
 (service home-surface-dtx-userd-service-type)
 ;; ...
 )))

Also the surface-pen-button-remap Utility is available. Just add the

(service surface-pen-button-service-type)

to your list of system services and adjust the surface-pen-button-configuration the usual way.