mesa: use older LLVM on aarch64 for now

vcunat · vcunat · commit 0a897b2a33dd · 2017-05-06T15:53:06.000+02:00
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
@@ -9139,12 +9139,16 @@ with pkgs;
       inherit (darwin) apple_sdk;
     }
     else alternative;
+
   mesa_noglu = mesaDarwinOr (callPackage ../development/libraries/mesa {
     # makes it slower, but during runtime we link against just mesa_drivers
     # through /run/opengl-driver*, which is overriden according to config.grsecurity
     # grsecEnabled = true; # no more support in nixpkgs ATM
-    llvmPackages = llvmPackages_4;
+
+    # llvm-4.0.0 won't pass tests on aarch64
+    llvmPackages = if system == "aarch64-linux" then llvmPackages_39 else llvmPackages_4;
   });
+
   mesa_glu =  mesaDarwinOr (callPackage ../development/libraries/mesa-glu { });
   mesa_drivers = mesaDarwinOr (
     let mo = mesa_noglu.override {
