try enable brittany#2473

Anton-Latukha wants to merge 2 commits intohaskell:masterhaskell/haskell-language-server:masterfrom

Anton-Latukha:2021-12-12-ghc9-try-brittanyAnton-Latukha/haskell-language-server:2021-12-12-ghc9-try-brittanyCopy head branch name to clipboard