Hi Mario,
the sync-uri for the repository has been changed - this was posted on 05.11.2018, see above:I have fixed gitweb, which was not working momentarily.
I was not aware, that my overlay was listed on overlays.gentoo.org. I have never made attempt for it to be included on the list.
To conlude this, I think you will make better job in maintaining ebuild for indi momentarily. I will occasionaly try to provide PRs if needed. Please send @knro updated instructions on how to get the software on Gentoo.