diff --git a/pkgs/applications/networking/instant-messengers/gajim/default.nix b/pkgs/applications/networking/instant-messengers/gajim/default.nix
index 83591722568..cf4e6358dff 100644
--- a/pkgs/applications/networking/instant-messengers/gajim/default.nix
+++ b/pkgs/applications/networking/instant-messengers/gajim/default.nix
@@ -1,27 +1,30 @@
-{ buildPythonApplication, lib, fetchurl, gettext, wrapGAppsHook
-, python, gtk3, gobject-introspection
-, nbxmpp, pyasn1, pygobject3, gnome3, dbus-python, pillow
+{ lib, fetchurl, gettext, wrapGAppsHook
+
+# Native dependencies
+, python3, gtk3, gobject-introspection, defaultIconTheme
+
+# Test dependencies
 , xvfb_run, dbus
+
+# Optional dependencies
 , enableJingle ? true, farstream, gstreamer, gst-plugins-base, gst-libav, gst-plugins-ugly
-, enableE2E ? true, pycrypto, python-gnupg
+, enableE2E ? true
 , enableSecrets ? true, libsecret
 , enableRST ? true, docutils
 , enableSpelling ? true, gspell
 , enableUPnP ? true, gupnp-igd
-, enableOmemoPluginDependencies ? true, python-axolotl, qrcode
-, extraPythonPackages ? pkgs: [], pythonPackages
+, enableOmemoPluginDependencies ? true
+, extraPythonPackages ? ps: []
 }:
 
-with lib;
-
-buildPythonApplication rec {
-  name = "gajim-${version}";
-  majorVersion = "1.0";
-  version = "${majorVersion}.3";
+python3.pkgs.buildPythonApplication rec {
+  pname = "gajim";
+  majorVersion = "1.1";
+  version = "${majorVersion}.2";
 
   src = fetchurl {
     url = "https://gajim.org/downloads/${majorVersion}/gajim-${version}.tar.bz2";
-    sha256 = "0ds4rqwfrpj89a489w6yih8gx5zi7qa4ffgld950fk7s0qxvcfnb";
+    sha256 = "1lx03cgi58z54xb7mhs6bc715lc00w5mpysf9n3q8zgn759fm0rj";
   };
 
   postPatch = ''
@@ -30,38 +33,38 @@ buildPythonApplication rec {
   '';
 
   buildInputs = [
-    gobject-introspection gtk3 gnome3.defaultIconTheme
-  ] ++ optionals enableJingle [ farstream gstreamer gst-plugins-base gst-libav gst-plugins-ugly ]
-    ++ optional enableSecrets libsecret
-    ++ optional enableSpelling gspell
-    ++ optional enableUPnP gupnp-igd;
+    gobject-introspection gtk3 defaultIconTheme
+  ] ++ lib.optionals enableJingle [ farstream gstreamer gst-plugins-base gst-libav gst-plugins-ugly ]
+    ++ lib.optional enableSecrets libsecret
+    ++ lib.optional enableSpelling gspell
+    ++ lib.optional enableUPnP gupnp-igd;
 
   nativeBuildInputs = [
     gettext wrapGAppsHook
   ];
 
-  propagatedBuildInputs = [
-    nbxmpp pyasn1 pygobject3 dbus-python pillow
-  ] ++ optionals enableE2E [ pycrypto python-gnupg ]
-    ++ optional enableRST docutils
-    ++ optionals enableOmemoPluginDependencies [ python-axolotl qrcode ]
-    ++ extraPythonPackages pythonPackages;
+  propagatedBuildInputs = with python3.pkgs; [
+    nbxmpp pyasn1 pygobject3 dbus-python pillow cssutils precis-i18n keyring
+  ] ++ lib.optionals enableE2E [ pycrypto python-gnupg ]
+    ++ lib.optional enableRST docutils
+    ++ lib.optionals enableOmemoPluginDependencies [ python-axolotl qrcode ]
+    ++ extraPythonPackages python3.pkgs;
 
   checkInputs = [ xvfb_run dbus.daemon ];
 
   checkPhase = ''
     xvfb-run dbus-run-session \
       --config-file=${dbus.daemon}/share/dbus-1/session.conf \
-      ${python.interpreter} test/runtests.py
+      ${python3.interpreter} setup.py test
   '';
 
   meta = {
     homepage = http://gajim.org/;
     description = "Jabber client written in PyGTK";
-    license = licenses.gpl3Plus;
-    maintainers = with maintainers; [ raskin aszlig abbradar ];
+    license = lib.licenses.gpl3Plus;
+    maintainers = with lib.maintainers; [ raskin aszlig abbradar ];
     downloadPage = "http://gajim.org/downloads.php";
     updateWalker = true;
-    platforms = platforms.linux;
+    platforms = lib.platforms.linux;
   };
 }
diff --git a/pkgs/development/python-modules/nbxmpp/default.nix b/pkgs/development/python-modules/nbxmpp/default.nix
index 888e1de6aa5..5da8257ac81 100644
--- a/pkgs/development/python-modules/nbxmpp/default.nix
+++ b/pkgs/development/python-modules/nbxmpp/default.nix
@@ -2,7 +2,7 @@
 
 let
   pname = "nbxmpp";
-  version = "0.6.8";
+  version = "0.6.9";
   name = "${pname}-${version}";
 in buildPythonPackage rec {
   inherit pname version;
@@ -11,7 +11,7 @@ in buildPythonPackage rec {
     name = "${name}.tar.bz2";
     url = "https://dev.gajim.org/gajim/python-nbxmpp/repository/archive.tar.bz2?"
         + "ref=${name}";
-    sha256 = "09zrqz01j45kvayfscd66avkrnn237lbjg9li5hjhyw92h6hkkc4";
+    sha256 = "14xrq0r5k1dk7rwj4cxyxfapi6gbnqg70mz94g6hn9ij06284mi7";
   };
 
   propagatedBuildInputs = [ pyopenssl ];
diff --git a/pkgs/development/python-modules/precis-i18n/default.nix b/pkgs/development/python-modules/precis-i18n/default.nix
new file mode 100644
index 00000000000..4c50aaee706
--- /dev/null
+++ b/pkgs/development/python-modules/precis-i18n/default.nix
@@ -0,0 +1,20 @@
+{ lib, buildPythonPackage, fetchPypi, isPy3k }:
+
+buildPythonPackage rec {
+  pname = "precis-i18n";
+  version = "1.0.0";
+
+  disabled = !isPy3k;
+
+  src = fetchPypi {
+    pname = "precis_i18n";
+    inherit version;
+    sha256 = "0gjhvwd8aifx94rl1ag08vlmndyx2q3fkyqb0c4i46x3p2bc2yi2";
+  };
+
+  meta = {
+    homepage = https://github.com/byllyfish/precis_i18n;
+    description = "Internationalized usernames and passwords";
+    license = lib.licenses.mit;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index b8822197c04..b398e4f51e7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -22334,9 +22334,9 @@ in
 
   foomatic-filters = callPackage ../misc/drivers/foomatic-filters {};
 
-  gajim = python3.pkgs.callPackage ../applications/networking/instant-messengers/gajim {
+  gajim = callPackage ../applications/networking/instant-messengers/gajim {
     inherit (gst_all_1) gstreamer gst-plugins-base gst-libav gst-plugins-ugly;
-    inherit (gnome3) gspell;
+    inherit (gnome3) gspell defaultIconTheme;
   };
 
   gammu = callPackage ../applications/misc/gammu { };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ba6931ad10c..94253962ba1 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3469,6 +3469,8 @@ in {
     name = "${python.libPrefix}-${pkgs.kmsxx.name}";
   });
 
+  precis-i18n = callPackage ../development/python-modules/precis-i18n { };
+
   pvlib = callPackage ../development/python-modules/pvlib { };
 
   pybase64 = callPackage ../development/python-modules/pybase64 { };