Problem with installing clang-3.8.0

I have troubles with installing clang 3.8.0
I am able to install versions such as 6.0 or 10 but I cannot install 3.8.0
When I write: sudo apt-get install clang-3.8.0 I get following message (screen included)

Os version: Ubuntu 20.04


Clang 3.8 is not available in the Ubuntu 20.04 repositories 0, so I guess you must have added a PPA or other source to get this. It would seem your source that is providing clang-3.8 does not also provide all its dependencies.