Supported platforms is outdated
https://www.haskell.org/ghcup/install/#supported-platforms
E.g. we have (non-official) binaries for M1 stack and HLS is available on all platforms.
Due to a large amount of spam we do not allow new users to create repositories, they are "external" users. If you are a new user and want to create a repository, for example for forking GHC, open a new issue on ghc/ghc using the "get-verified" issue template
https://www.haskell.org/ghcup/install/#supported-platforms
E.g. we have (non-official) binaries for M1 stack and HLS is available on all platforms.