streamlink: Init at 1.14.0-rc1

A fork of livestreamer (which is no longer maintained) that actually
works with Twitch.

pkgs/applications/video/streamlink/default.nix

@@ -0,0 +1,29 @@
+{ stdenv, pythonPackages, fetchFromGitHub, rtmpdump }:
+
+pythonPackages.buildPythonApplication rec {
+  version = "1.14.0-rc1";
+  name = "streamlink-${version}";
+
+  src = fetchFromGitHub {
+    owner = "streamlink";
+    repo = "streamlink";
+    rev = "ffc099b16b9a9d2c0c44081d687c50ee2e935f29";
+    sha256 = "0ix2k2yd2jzcazkjjb0iczr4bv7pgx873k7bhxgb9zwplklxpw1k";
+  };
+
+  propagatedBuildInputs = (with pythonPackages; [ pycrypto requests2 ]) ++ [ rtmpdump ];
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/streamlink/streamlink;
+    description = ''
+      Streamlink is a CLI utility that pipes flash videos from online
+      streaming services to a variety of video players such as VLC, or
+      alternatively, a browser.
+
+      Streamlink is a fork of the livestreamer project.
+    '';
+    license = licenses.bsd2;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.dezgeg ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -9584,6 +9584,8 @@ in
 
   stlport = callPackage ../development/libraries/stlport { };
 
+  streamlink = callPackage ../applications/video/streamlink { pythonPackages = python3Packages; };
+
   strigi = callPackage ../development/libraries/strigi { clucene_core = clucene_core_2; };
 
   subtitleeditor = callPackage ../applications/video/subtitleeditor { };