Add git-hub: command line GitHub interface

Rather cool, actually.

pkgs/applications/version-management/git-and-tools/git-hub/default.nix

@@ -0,0 +1,39 @@
+{ stdenv, fetchFromGitHub, docutils, python }:
+
+let version = "0.9.0"; in
+stdenv.mkDerivation {
+  name = "git-hub-${version}";
+
+  src = fetchFromGitHub {
+    sha256 = "0c4kq4a906lr8nzway7qh0560n2ydvidh9rlffh44902rd48kp0h";
+    rev = "v${version}";
+    repo = "git-hub";
+    owner = "sociomantic";
+  };
+
+  meta = with stdenv.lib; {
+    inherit version;
+    description = "Git command line interface to GitHub";
+    longDescription = ''
+      A simple command line interface to GitHub, enabling most useful GitHub
+      tasks (like creating and listing pull request or issues) to be accessed
+      directly through the Git command line.
+    '';
+    homepage = https://github.com/sociomantic/git-hub;
+    license = licenses.gpl3Plus;
+    platforms = with platforms; linux;
+    maintainers = with maintainers; [ nckx ];
+  };
+
+  buildInputs = [ python ];
+  nativeBuildInputs = [ docutils ];
+
+  postPatch = ''
+    substituteInPlace Makefile --replace rst2man rst2man.py
+    patchShebangs .
+  '';
+
+  enableParallelBuilding = true;
+
+  installFlags = "prefix=$(out)";
+}

pkgs/top-level/all-packages.nix

@@ -1519,6 +1519,8 @@ let
 
   gifsicle = callPackage ../tools/graphics/gifsicle { };
 
+  git-hub = callPackage ../applications/version-management/git-hub { };
+
   gitlab = callPackage ../applications/version-management/gitlab {
     ruby = ruby_2_1_3;
   };