Skipping vala-panel-appmenu-xfce-git and vala-panel-extras-git due to the errors. I'm not sure how to fix them, and it looks like a bigger problem with them than I know how to fix. Open another issue for either independently if you want them!
This is an older app with next to no potential to receive an upgrade in the future, and it seems we already have many others in repo which are very similar.
Dec 13, 2021 - This was the last commit, and that's what leads me to assume it was abandoned. Please do reopen this issue when (if?) the next update happens.