Installing GHC 8.10.2 on alpine fails (incorrect `dlSubDir`)
The bindist for alpine contains a folder named ghc-8.10.2-x86_64-unknown-linux, rather than ghc-8.10.2
Relevant line in the yaml file: https://gitlab.haskell.org/haskell/ghcup-hs/-/blob/85bd87d5f36220ac417a60b5f6ff6cecc62c0b9c/ghcup-0.0.2.yaml#L1162