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
* unity-gtk-module
* unity-settings-daemon
* window-stack-bridge
* unity7

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 unity` on the Terminal.

#### Known issues
* Indicators do not show up in the top panel.
* 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.
* The Yaru theme does not work.
* An application's menu bar appears in the application's window instead of the top panel.
* Changing wallpapers does not work, and the logo displayed by the Unity greeter (on the bottom-left) is present when logging into Unity.
* 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