asciinema 1.3.0

Closes #2975.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

Formula/asciinema.rb

@@ -1,10 +1,8 @@
-require "language/go"
-
 class Asciinema < Formula
   desc "Record and share terminal sessions"
-  homepage "https://asciinema.org/"
-  url "https://github.com/asciinema/asciinema/archive/v1.2.0.tar.gz"
-  sha256 "64b8c2b034945a99398c5593fd8831c6448fd3b6dd788a979582805bfdcb5746"
+  homepage "https://asciinema.org"
+  url "https://github.com/asciinema/asciinema/archive/v1.3.0.tar.gz"
+  sha256 "968016828119d53b8e4e6ccf40a2635704d236f8e805f635c15adc09a4373a55"
 
   head "https://github.com/asciinema/asciinema.git"
 
@@ -15,14 +13,15 @@ class Asciinema < Formula
     sha256 "b92022ad9a785aebbedc1cbd19160eba65416070dea34f5cb8d5d2de7e6d0315" => :mavericks
   end
 
-  depends_on "go" => :build
+  depends_on :python3
 
   def install
-    ENV["GOPATH"] = buildpath
-    mkdir_p buildpath/"src/github.com/asciinema"
-    ln_s buildpath, buildpath/"src/github.com/asciinema/asciinema"
+    xy = Language::Python.major_minor_version "python3"
+    ENV.prepend_create_path "PYTHONPATH", libexec/"lib/python#{xy}/site-packages"
+    system "python3", *Language::Python.setup_install_args(libexec)
 
-    system "go", "build", "-o", bin/"asciinema"
+    bin.install Dir[libexec/"bin/*"]
+    bin.env_script_all_files(libexec/"bin", :PYTHONPATH => ENV["PYTHONPATH"])
   end
 
   test do