Hey all, SPJ pointed out to me today that if you try to run: cabal install --with-ghc=/path/to/inplace/bin/ghc-stage2 with the latest GHC HEAD, this probably will not actually work, because your system installed version of Cabal is probably too old to deal with the new package key stuff in HEAD. So, how do you get a version of cabal-install (and Cabal) which is new enough to do what you need it to? The trick is to compile Cabal using your /old/ GHC. Step-by-step, this involves cd'ing into libraries/Cabal/Cabal and running `cabal install` (or install it in a sandbox, if you like) and then cd'ing to libraries/Cabal/cabal-install and cabal install'ing that. Cabal devs, is cutting a new release of Cabal and cabal-install in the near future possible? In that case, users can just cabal update; cabal install cabal-install and get a version of Cabal which will work for them. Cheers, Edward