Properly check for required commands
E.g. realpath was missing in travis, which resulted in funny behavior of ghcup show.
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
E.g. realpath was missing in travis, which resulted in funny behavior of ghcup show.