diff --git a/pkgs/applications/networking/irc/weechat/default.nix b/pkgs/applications/networking/irc/weechat/default.nix
index b47018e0d97..954651d79e9 100644
--- a/pkgs/applications/networking/irc/weechat/default.nix
+++ b/pkgs/applications/networking/irc/weechat/default.nix
@@ -14,8 +14,8 @@ stdenv.mkDerivation rec {
   buildInputs = 
     [ ncurses perl python openssl aspell gnutls zlib curl pkgconfig
       libgcrypt ruby lua5 tcl guile pythonPackages.pycrypto makeWrapper
-      cacert cmake
-    ];
+      cacert cmake ]
+    ++ stdenv.lib.optional stdenv.isDarwin pythonPackages.pync;
 
   # This patch is based on
   # weechat/c324610226cef15ecfb1235113c8243b068084c8. It fixes
@@ -24,17 +24,23 @@ stdenv.mkDerivation rec {
   # then.
   patches = [ ./fix-gnutls-32.diff ];
 
+  NIX_CFLAGS_COMPILE = "-I${python}/include/${python.libPrefix}";
+
   postInstall = ''
-       wrapProgram "$out/bin/weechat" \
-         --prefix PYTHONPATH : "$PYTHONPATH" \
-         --prefix PYTHONPATH : "$out/lib/${python.libPrefix}/site-packages"
+    NIX_PYTHONPATH="$out/lib/${python.libPrefix}/site-packages"
+  '' + stdenv.lib.optionalString stdenv.isDarwin ''
+    NIX_PYTHONPATH+="${pythonPackages.pync}/lib/${python.libPrefix}/site-packages"
+  '' + ''
+     wrapProgram "$out/bin/weechat" \
+       --prefix PYTHONPATH : "$PYTHONPATH" \
+       --prefix PYTHONPATH : "$NIX_PYTHONPATH"
   '';
 
   meta = {
     homepage = http://www.weechat.org/;
     description = "A fast, light and extensible chat client";
     license = stdenv.lib.licenses.gpl3;
-    maintainers = with stdenv.lib.maintainers; [ garbas the-kenny ];
-    platforms = stdenv.lib.platforms.linux;
+    maintainers = with stdenv.lib.maintainers; [ lovek323 garbas the-kenny ];
+    platforms = stdenv.lib.platforms.unix;
   };
 }
diff --git a/pkgs/applications/networking/irc/weechat/devel.nix b/pkgs/applications/networking/irc/weechat/devel.nix
index 0ad05089c62..25cc8dd7660 100644
--- a/pkgs/applications/networking/irc/weechat/devel.nix
+++ b/pkgs/applications/networking/irc/weechat/devel.nix
@@ -16,20 +16,26 @@ stdenv.mkDerivation rec {
   buildInputs = 
     [ ncurses perl python openssl aspell gnutls zlib curl pkgconfig
       libgcrypt ruby lua5 tcl guile pythonPackages.pycrypto makeWrapper
-      cacert cmake
-    ];
+      cacert cmake ]
+    ++ stdenv.lib.optional stdenv.isDarwin pythonPackages.pync;
+
+  NIX_CFLAGS_COMPILE = "-I${python}/include/${python.libPrefix}";
 
   postInstall = ''
-       wrapProgram "$out/bin/weechat" \
-         --prefix PYTHONPATH : "$PYTHONPATH" \
-         --prefix PYTHONPATH : "$out/lib/${python.libPrefix}/site-packages"
+    NIX_PYTHON_PATH="$out/lib/${python.libPrefix}/site-packages"
+  '' + stdenv.lib.optionalString stdenv.isDarwin ''
+    NIX_PYTHON_PATH+="${pythonPackages.pync}/lib/${python.libPrefix}/site-packages"
+  '' + ''
+     wrapProgram "$out/bin/weechat" \
+       --prefix PYTHONPATH : "$PYTHONPATH" \
+       --prefix PYTHONPATH : "$NIX_PYTHONPATH"
   '';
 
   meta = {
-    homepage = http://www.weechat.org/;
+    homepage    = http://www.weechat.org/;
     description = "A fast, light and extensible chat client";
-    license = stdenv.lib.licenses.gpl3;
-    maintainers = with stdenv.lib.maintainers; [ garbas the-kenny ];
-    platforms = stdenv.lib.platforms.linux;
+    license     = stdenv.lib.licenses.gpl3;
+    maintainers = with stdenv.lib.maintainers; [ lovek323 garbas the-kenny ];
+    platforms   = stdenv.lib.platforms.unix;
   };
 }
diff --git a/pkgs/development/python-modules/pycrypto/default.nix b/pkgs/development/python-modules/pycrypto/default.nix
index b203eebf90c..c8f0f74c1ff 100644
--- a/pkgs/development/python-modules/pycrypto/default.nix
+++ b/pkgs/development/python-modules/pycrypto/default.nix
@@ -13,6 +13,7 @@ buildPythonPackage rec {
 
   doCheck = !stdenv.isDarwin; # error: AF_UNIX path too long
 
+
   meta = {
     homepage = "http://www.pycrypto.org/";
     description = "Python Cryptography Toolkit";
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index bb8e426fc45..13edd419076 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9283,4 +9283,33 @@ rec {
     };
   };
 
+  pync = buildPythonPackage rec {
+    version  = "1.4";
+    baseName = "pync";
+    name     = "${baseName}-${version}";
+
+    src = fetchurl {
+      url = "https://pypi.python.org/packages/source/p/${baseName}/${name}.tar.gz";
+      md5 = "5cc79077f386a17b539f1e51c05a3650";
+    };
+
+    buildInputs = [ pkgs.coreutils ];
+
+    propagatedBuildInputs = [ dateutil ];
+
+    preInstall = stdenv.lib.optionalString stdenv.isDarwin ''
+      sed -i 's|^\([ ]*\)self.bin_path.*$|\1self.bin_path = "${pkgs.rubyLibs.terminal_notifier}/bin/terminal-notifier"|' build/lib/pync/TerminalNotifier.py
+    '';
+
+    meta = with stdenv.lib; {
+      description = "Python Wrapper for Mac OS 10.8 Notification Center";
+      homepage    = https://pypi.python.org/pypi/pync/1.4;
+      license     = licenses.mit;
+      platforms   = platforms.darwin;
+      maintainers = [ maintainers.lovek323 ];
+    };
+  };
+
+
+
 }); in pythonPackages