libtensorflow 2.1.0

Closes #48957.

Signed-off-by: Alexander Bayandin <[email protected]>

Formula/libtensorflow.rb

@@ -3,8 +3,8 @@ class Libtensorflow < Formula
 
   desc "C interface for Google's OS library for Machine Intelligence"
   homepage "https://www.tensorflow.org/"
-  url "https://github.com/tensorflow/tensorflow/archive/v2.0.0.tar.gz"
-  sha256 "49b5f0495cd681cbcb5296a4476853d4aea19a43bdd9f179c928a977308a0617"
+  url "https://github.com/tensorflow/tensorflow/archive/v2.1.0.tar.gz"
+  sha256 "638e541a4981f52c69da4a311815f1e7989bf1d67a41d204511966e1daed14f7"
 
   bottle do
     cellar :any
@@ -15,16 +15,29 @@ class Libtensorflow < Formula
 
   depends_on "bazel" => :build
   depends_on :java => ["1.8", :build]
-  depends_on "python" => :build
+  depends_on "[email protected]" => :build
+
+  resource "numpy" do
+    url "https://files.pythonhosted.org/packages/40/de/0ea5092b8bfd2e3aa6fdbb2e499a9f9adf810992884d414defc1573dca3f/numpy-1.18.1.zip"
+    sha256 "b6ff59cee96b454516e47e7721098e6ceebef435e3e21ac2d6c3b8b02628eb77"
+  end
+
+  resource "six" do
+    url "https://files.pythonhosted.org/packages/94/3e/edcf6fef41d89187df7e38e868b2dd2182677922b600e880baad7749c865/six-1.13.0.tar.gz"
+    sha256 "30f610279e8b2578cab6db20741130331735c781b56053c59c4076da27f06b66"
+  end
 
   def install
-    venv_root = "#{buildpath}/venv"
-    virtualenv_create(venv_root, "python3")
+    # Bazel fails if version from .bazelversion doesn't match bazel version, so just to use the latest one
+    rm_f ".bazelversion"
 
     cmd = Language::Java.java_home_cmd("1.8")
     ENV["JAVA_HOME"] = Utils.popen_read(cmd).chomp
 
-    ENV["PYTHON_BIN_PATH"] = "#{venv_root}/bin/python"
+    venv = virtualenv_create("#{buildpath}/venv", "python3")
+    venv.pip_install resources
+    ENV["PYTHON_BIN_PATH"] = "#{buildpath}/venv/bin/python"
+
     ENV["CC_OPT_FLAGS"] = "-march=native"
     ENV["TF_IGNORE_MAX_BAZEL_VERSION"] = "1"
     ENV["TF_NEED_JEMALLOC"] = "1"
@@ -47,7 +60,16 @@ def install
     ENV["TF_CONFIGURE_IOS"] = "0"
     system "./configure"
 
-    system "bazel", "build", "--jobs", ENV.make_jobs, "--compilation_mode=opt", "--copt=-march=native", "tensorflow:libtensorflow.so"
+    bazel_args =%W[
+      --jobs=#{ENV.make_jobs}
+      --compilation_mode=opt
+      --copt=-march=native
+    ]
+    targets = %w[
+      tensorflow:libtensorflow.so
+    ]
+    system "bazel", "build", *bazel_args, *targets
+
     lib.install Dir["bazel-bin/tensorflow/*.so*", "bazel-bin/tensorflow/*.dylib*"]
     (include/"tensorflow/c").install %w[
       tensorflow/c/c_api.h