There is an updated pull request by EarldridgeJazzedPineda against master on the void-packages repository

https://github.com/EarldridgeJazzedPineda/void-packages unity
https://github.com/void-linux/void-packages/pull/51509

New packages for the Unity desktop environment
#### Testing the changes
- I tested the changes in this PR: **YES**

#### New package
- This new package conforms to the [package requirements](https://github.com/void-linux/void-packages/blob/master/CONTRIBUTING.md#package-requirements): **YES**

#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc

#### How to test Unity
To test the Unity desktop environment, build and install the `unity-core` package and enable the following services:
* indicator-datetime
* indicator-power
* indicator-session
* indicator-sound
* hud
* unity7
* unity-gtk-module
* unity-panel-service
* unity-panel-service-lockscreen
* unity-settings-daemon
* window-stack-bridge

At the login screen, click on the circle next to the username and select "Unity (Default)", then login as usual.

To open apps, click on the Terminal icon on the left panel and type in the name of the application.

To log out of Unity, type in `pkill gnome-session` on the Terminal.

#### Known issues
* Some, but not all of the indicators work. unity-panel-service has to be started manually.
* The HUD works (by pressing Alt), but no search results will appear.
* The dash works, but no lenses are included. Lenses cannot be compiled due to a problem with the Vala compiler.
* Some GTK applications (such as epiphany, gnome-text-editor, and nautilus) aren't themed properly.
* Unity Tweak Tool does not work.

Closes #43579.

A patch file from https://github.com/void-linux/void-packages/pull/51509.patch is attached