```ruby
# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

class Kpt < Formula
  desc "Toolkit to manage,and apply Kubernetes Resource config data files"
  homepage "https://googlecontainertools.github.io/kpt"
  url "https://github.com/GoogleContainerTools/kpt/archive/v0.16.0.tar.gz"
  sha256 "bef140a1a96994029153dca8c00b1750b9a5a764fb9db2dc68d7bb40e8a29e8a"

  depends_on "go" => :build

  def install
    ENV["GO111MODULE"] = "on"
    system "go", "build", "-ldflags", "-X main.version=#{version}", *std_go_args
  end

  test do
    assert_match version.to_s, shell_output("#{bin}/kpt version")
  end
end
```

Revert "update homebrew to v0.16.0"
user
```ruby
# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

class Kpt < Formula
  desc "Toolkit to manage,and apply Kubernetes Resource config data files"
  homepage "https://googlecontainertools.github.io/kpt"
  url "https://github.com/GoogleContainerTools/kpt/archive/v0.15.0.tar.gz"
  sha256 "ce53ca42c991224e725d34b41f7646d53d98e6d19702562e049a2cf21c00984b"

  depends_on "go" => :build

  def install
    ENV["GO111MODULE"] = "on"
    system "go", "build", "-ldflags", "-X main.version=#{version}", *std_go_args
  end

  test do
    assert_match version.to_s, shell_output("#{bin}/kpt version")
  end
end
```
assistant