diff --git a/pkgs/development/libraries/libthreadar/default.nix b/pkgs/development/libraries/libthreadar/default.nix
new file mode 100644
index 000000000000..ed19fab6d994
--- /dev/null
+++ b/pkgs/development/libraries/libthreadar/default.nix
@@ -0,0 +1,35 @@
+{ stdenv, fetchurl }:
+
+with stdenv.lib;
+
+stdenv.mkDerivation rec {
+  version = "1.3.0";
+  pname = "libthreadar";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/libthreadar/${pname}-${version}.tar.gz";
+    sha256 = "0g2wxykawlsj6ma9slbbk0bxynqvmkwhaln2fiwc21x7nhjvpn9z";
+  };
+
+  outputs = [ "out" "dev" ];
+
+  configureFlags = [
+    "--disable-build-html"
+  ];
+
+  postInstall = ''
+    # Disable html help
+    rm -r "$out"/share
+  '';
+
+  meta = {
+    homepage = "http://libthreadar.sourceforge.net/";
+    description = ''
+      Libthreadar is a C++ library providing a small set of C++ classes to manipulate
+      threads in a very simple and efficient way from your C++ code.
+    '';
+    maintainers = with maintainers; [ izorkin ];
+    license = licenses.lgpl3;
+    platforms = platforms.unix;
+  };
+}
diff --git a/pkgs/tools/backup/dar/default.nix b/pkgs/tools/backup/dar/default.nix
index a439bbf41b13..1f379feece49 100644
--- a/pkgs/tools/backup/dar/default.nix
+++ b/pkgs/tools/backup/dar/default.nix
@@ -1,18 +1,28 @@
-{ stdenv, fetchurl, zlib, bzip2, openssl, attr, lzo, libgcrypt, e2fsprogs, gpgme, xz }:
+{ stdenv, fetchurl
+, attr, e2fsprogs
+, curl, librsync, libthreadar
+, gpgme, libgcrypt, openssl
+, bzip2, lzo, xz, zlib
+}:
 
 with stdenv.lib;
 
 stdenv.mkDerivation rec {
-  version = "2.6.9";
+  version = "2.6.10";
   pname = "dar";
 
   src = fetchurl {
     url = "mirror://sourceforge/dar/${pname}-${version}.tar.gz";
-    sha256 = "1jzqq54w1dix2qdlj4hr9dpq9fnp23h102bk8d2gq6k7n2zgaj6v";
+    sha256 = "1ryj4xxar18hshg38j1ljhplypgmfprwqn72k1jwxi28qravg80n";
   };
 
-  buildInputs = [ zlib bzip2 openssl lzo libgcrypt gpgme xz ]
-    ++ optionals stdenv.isLinux [ attr e2fsprogs ];
+  outputs = [ "out" "dev" ];
+
+  buildInputs = [
+    curl librsync libthreadar
+    gpgme libgcrypt openssl
+    bzip2 lzo xz zlib
+  ] ++ optionals stdenv.isLinux [ attr e2fsprogs ];
 
   configureFlags = [
     "--disable-birthtime"
@@ -23,7 +33,8 @@ stdenv.mkDerivation rec {
   ];
 
   postInstall = ''
-    rm -r "$out"/share/dar # Disable html help
+    # Disable html help
+    rm -r "$out"/share/dar
   '';
 
   enableParallelBuilding = true;
@@ -33,6 +44,7 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = "http://dar.linux.free.fr";
     description = "Disk ARchiver, allows backing up files into indexed archives";
+    maintainers = with maintainers; [ izorkin ];
     license = licenses.gpl2;
     platforms = platforms.unix;
   };
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 3f65c1cc2f70..d73a5c313133 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -13980,6 +13980,8 @@ in
 
   libtheora = callPackage ../development/libraries/libtheora { };
 
+  libthreadar = callPackage ../development/libraries/libthreadar { };
+
   libtiff = callPackage ../development/libraries/libtiff { };
 
   libtiger = callPackage ../development/libraries/libtiger { };