llvm6: rc1, hashes, top-level

pkgs/top-level/all-packages.nix

@@ -5780,6 +5780,7 @@ with pkgs;
     };
   };
 
+  clang_6  = llvmPackages_6.clang;
   clang_5  = llvmPackages_5.clang;
   clang_4  = llvmPackages_4.clang;
   clang_39 = llvmPackages_39.clang;
@@ -6465,13 +6466,16 @@ with pkgs;
   lld = llvmPackages.lld;
   lld_4 = llvmPackages_4.lld;
   lld_5 = llvmPackages_5.lld;
+  lld_6 = llvmPackages_6.lld;
 
   lldb = llvmPackages.lldb;
   lldb_4 = llvmPackages_4.lldb;
   lldb_5 = llvmPackages_5.lldb;
+  lldb_6 = llvmPackages_6.lldb;
 
   llvm = llvmPackages.llvm;
 
+  llvm_6  = llvmPackages_6.llvm;
   llvm_5  = llvmPackages_5.llvm;
   llvm_4  = llvmPackages_4.llvm;
   llvm_39 = llvmPackages_39.llvm;
@@ -6535,6 +6539,9 @@ with pkgs;
     stdenv = overrideCC stdenv gcc6; # with gcc-7: undefined reference to `__divmoddi4'
   });
 
+  llvmPackages_6 = callPackage ../development/compilers/llvm/6 {
+    inherit (stdenvAdapters) overrideCC;
+  };
   manticore = callPackage ../development/compilers/manticore { };
 
   mentorToolchains = recurseIntoAttrs (