Add clsync tool

bsc/clsync/default.nix

@@ -0,0 +1,54 @@
+{ stdenv
+, fetchFromGitHub
+, libcap
+, libcgroup
+, libmhash
+, doxygen
+, graphviz
+, autoreconfHook
+, pkg-config
+, glib
+}:
+
+let
+  version = "0.4.4";
+
+in stdenv.mkDerivation {
+  pname = "clsync";
+  inherit version;
+
+  src = fetchFromGitHub {
+    repo = "clsync";
+    owner = "clsync";
+    rev = "v${version}";
+    sha256 = "0sdiyfwp0iqr6l1sirm51pirzmhi4jzgky5pzfj24nn71q3fwqgz";
+  };
+
+  outputs = [ "out" "dev" ];
+
+  buildInputs = [
+    autoreconfHook
+    libcap
+    libcgroup
+    libmhash
+    doxygen
+    graphviz
+    pkg-config
+    glib
+  ];
+
+  preConfigure = ''
+    ./configure --help
+  '';
+
+  enableParallelBuilding = true;
+
+  meta = with stdenv.lib; {
+    description = "File live sync daemon based on inotify/kqueue/bsm (Linux, FreeBSD), written in GNU C";
+    homepage = "https://github.com/clsync/clsync";
+    license = licenses.gpl3Plus;
+    maintainers = [ ];
+    platforms = platforms.linux;
+  };
+}
+