neovim-qt: 0pre -> 0.2.1, use libmsgpack 1.4

pkgs/applications/editors/neovim/qt.nix

···
 }:
 
 let # not very usable ATM
-  version = "0pre-2015-10-18";
+  version = "0.2.1";
 in
 stdenv.mkDerivation {
   name = "neovim-qt-${version}";
···
   src = fetchFromGitHub {
     repo = "neovim-qt";
     owner = "equalsraf";
-    rev = "03236e2";
-    sha256 = "0hhwpnj7yfqdk7yiwrq0x6n4xx30brj9clxmxx796421rlcrxypq";
+    rev = "v${version}";
+    sha256 = "0mqs2f7l05q2ayj77czr5fnpr7fa00qrmjdjxglbwxdxswcsz88n";
   };
 
   # It tries to download libmsgpack; let's use ours.
···
 
     # Similar enough to FindMsgpack
     set(MSGPACK_INCLUDE_DIRS ${libmsgpack}/include PARENT_SCOPE)
-    set(MSGPACK_LIBRARIES msgpack PARENT_SCOPE)
+    set(MSGPACK_LIBRARIES msgpackc PARENT_SCOPE)
   '';
     in "echo '${use-msgpack}' > third-party/CMakeLists.txt";
 
···
 
   enableParallelBuilding = true;
 
-  installPhase = ''
-    mkdir -p "$out/bin"
-    mv ./bin/nvim-qt "$out/bin/"
+  postInstall = ''
     wrapProgram "$out/bin/nvim-qt" --prefix PATH : "${neovim}/bin"
   '';
 

pkgs/development/libraries/libmsgpack/1.4.nix

···
+{ callPackage, fetchFromGitHub, ... } @ args:
+
+callPackage ./generic.nix (args // rec {
+  version = "1.4.2";
+
+  src = fetchFromGitHub {
+    owner = "msgpack";
+    repo = "msgpack-c";
+    rev = "cpp-${version}";
+    sha256 = "0zlanifi5hmm303pzykpidq5jbapl891zwkwhkllfn8ab1jvzbaa";
+  };
+})

pkgs/top-level/all-packages.nix

···
 
   libmsgpack = callPackage ../development/libraries/libmsgpack { };
   libmsgpack_0_5 = callPackage ../development/libraries/libmsgpack/0.5.nix { };
+  libmsgpack_1_4 = callPackage ../development/libraries/libmsgpack/1.4.nix { };
 
   libnatspec = callPackage ../development/libraries/libnatspec (
     stdenv.lib.optionalAttrs stdenv.isDarwin {
···
 
   neovim-qt = callPackage ../applications/editors/neovim/qt.nix {
     qt5 = qt55;
+    libmsgpack = libmsgpack_1_4;
   };
 
   neovim-pygui = pythonPackages.neovim_gui;