I'm trying to recompile GHC (via GHC 7.10.3) from freshly git-pulled HEAD, and "make" keeps dying at ghctags:

    Configuring ghctags-0.1...
    ghc-cabal: At least the following dependencies are missing:
    Cabal >=1.25 && <1.27

According to ghc-pkg I have Cabal 1.25.0.0 (compiled from a freshly git-pulled git clone).

Any ideas what's going on and how I can fix it?