tflint 0.9.1 (new formula)

Add tflint formula to brew.

Signed-off-by: Dylan Arbour <dylan.arbour@gmail.com>

Closes #41937.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Formula/tflint.rb

@@ -0,0 +1,31 @@
+class Tflint < Formula
+  desc "Linter for Terraform files"
+  homepage "https://github.com/wata727/tflint"
+  url "https://github.com/wata727/tflint/archive/v0.9.1.tar.gz"
+  sha256 "a4f9f845584c51b3d0db3d2ee9ab48435db52ade3ddde1a8689e2ad8cf9acdca"
+  head "https://github.com/wata727/tflint.git"
+
+  depends_on "go" => :build
+
+  def install
+    ENV["GOPATH"] = buildpath
+    ENV["GO111MODULE"] = "on"
+
+    dir = buildpath/"src/github.com/wata727/tflint"
+    dir.install buildpath.children
+
+    cd dir do
+      system "go", "build", "-o", bin/"tflint"
+      prefix.install_metafiles
+    end
+  end
+
+  test do
+    (testpath/"test.tf").write <<~EOS
+      provider "aws" {
+        region = "${var.aws_region}"
+      }
+    EOS
+    assert_match "Awesome! Your code is following the best practices :)", shell_output("#{bin}/tflint test.tf")
+  end
+end