anchor.diff:    };
   
     meta.license = stdenv.lib.licenses.bsd3;
  -  meta.platforms = ["x86_64-linux" "i686-linux" "x86_64-darwin"];
  +  meta.platforms = ["x86_64-linux" "aarch64-linux" "i686-linux" "x86_64-darwin"];
   }
  
positive.code:       url = "http://haskell.org/ghc/dist/${version}/ghc-${version}-x86_64-deb9-linux.tar.xz";
        sha256 = "1pqlx6rdjs2110g0y1i9f8x18lmdizibjqd15f5xahcz39hgaxdw";
      };
      x86_64-darwin = {
        url = "http://haskell.org/ghc/dist/${version}/ghc-${version}-x86_64-apple-darwin.tar.xz";
        sha256 = "0s9188vhhgf23q3rjarwhbr524z6h2qga5xaaa2pma03sfqvvhfz";
  
negative.code:     or (throw "cannot bootstrap GHC on this platform"));
  
    nativeBuildInputs = [ perl ];
    propagatedBuildInputs = stdenv.lib.optionals useLLVM [ llvmPackages.llvm ];
  
    # Cannot patchelf beforehand due to relative RPATHs that anticipate
    # the final install location/
  