xgboost: 0.60 -> 0.7

Fixes build error.

pkgs/development/libraries/xgboost/default.nix

@@ -1,23 +1,37 @@
-{ stdenv, fetchgit }:
+{ stdenv, lib, fetchgit, cmake
+, avxSupport ? false
+, cudaSupport ? false, cudatoolkit
+, ncclSupport ? false, nccl
+}:
+
+assert ncclSupport -> cudaSupport;
 
 stdenv.mkDerivation rec {
   name = "xgboost-${version}";
-  version = "0.60";
+  version = "0.7";
 
   # needs submodules
   src = fetchgit {
     url = "https://github.com/dmlc/xgboost";
     rev = "refs/tags/v${version}";
-    sha256 = "0536vfl59n9vlagl1cpdl06c9y19dscwhwdzvi27zk5nc5qb6rdq";
+    sha256 = "1wxh020l4q037hc5z7vgxflb70l41a97anl8g6y4wxb74l5zv61l";
   };
 
   enableParallelBuilding = true;
 
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = lib.optional cudaSupport cudatoolkit
+                ++ lib.optional ncclSupport nccl;
+
+  cmakeFlags = lib.optionals cudaSupport [ "-DUSE_CUDA=ON" "-DCUDA_HOST_COMPILER=${cudatoolkit.cc}/bin/cc" ]
+               ++ lib.optional ncclSupport "-DUSE_NCCL=ON";
+
   installPhase = ''
     mkdir -p $out
-    cp -r include $out
-    install -Dm755 lib/libxgboost.so $out/lib/libxgboost.so
-    install -Dm755 xgboost $out/bin/xgboost
+    cp -r ../include $out
+    install -Dm755 ../lib/libxgboost.so $out/lib/libxgboost.so
+    install -Dm755 ../xgboost $out/bin/xgboost
   '';
 
   meta = with stdenv.lib; {