diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 54c580bdb7df..93c6422744f9 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -9800,6 +9800,12 @@
     githubId = 1322201;
     name = "Yochai";
   };
+  yoctocell = {
+    email = "public@yoctocell.xyz";
+    github = "yoctocell";
+    githubId = 40352765;
+    name = "Yoctocell";
+  };
   yorickvp = {
     email = "yorickvanpelt@gmail.com";
     github = "yorickvp";
diff --git a/nixos/modules/services/web-apps/zabbix.nix b/nixos/modules/services/web-apps/zabbix.nix
index 007195128347..e94861a90b5a 100644
--- a/nixos/modules/services/web-apps/zabbix.nix
+++ b/nixos/modules/services/web-apps/zabbix.nix
@@ -3,7 +3,7 @@
 let
 
   inherit (lib) mkDefault mkEnableOption mkForce mkIf mkMerge mkOption types;
-  inherit (lib) literalExample mapAttrs optionalString;
+  inherit (lib) literalExample mapAttrs optionalString versionAtLeast;
 
   cfg = config.services.zabbixWeb;
   fpm = config.services.phpfpm.pools.zabbix;
@@ -28,6 +28,8 @@ let
     $ZBX_SERVER_PORT = '${toString cfg.server.port}';
     $ZBX_SERVER_NAME = ''';
     $IMAGE_FORMAT_DEFAULT = IMAGE_FORMAT_PNG;
+
+    ${cfg.extraConfig}
   '';
 
 in
@@ -143,6 +145,14 @@ in
         '';
       };
 
+      extraConfig = mkOption {
+        type = types.lines;
+        default = "";
+        description = ''
+          Additional configuration to be copied verbatim into <filename>zabbix.conf.php</filename>.
+        '';
+      };
+
     };
   };
 
@@ -150,6 +160,10 @@ in
 
   config = mkIf cfg.enable {
 
+    services.zabbixWeb.extraConfig = optionalString ((versionAtLeast config.system.stateVersion "20.09") && (versionAtLeast cfg.package.version "5.0.0")) ''
+      $DB['DOUBLE_IEEE754'] = 'true';
+    '';
+
     systemd.tmpfiles.rules = [
       "d '${stateDir}' 0750 ${user} ${group} - -"
       "d '${stateDir}/session' 0750 ${user} ${config.services.httpd.group} - -"
diff --git a/pkgs/applications/audio/redoflacs/default.nix b/pkgs/applications/audio/redoflacs/default.nix
index 140b163e25cd..879acdf3a17b 100644
--- a/pkgs/applications/audio/redoflacs/default.nix
+++ b/pkgs/applications/audio/redoflacs/default.nix
@@ -5,8 +5,6 @@
 , installShellFiles
 , flac
 , sox
-, withAucdtect ? false
-, aucdtect ? null
 }:
 
 stdenv.mkDerivation rec {
@@ -36,7 +34,7 @@ stdenv.mkDerivation rec {
 
   postFixup = ''
     wrapProgram $out/bin/redoflacs \
-      --prefix PATH : ${stdenv.lib.makeBinPath ([ flac sox ] ++ lib.optional withAucdtect aucdtect)}
+      --prefix PATH : ${stdenv.lib.makeBinPath ([ flac sox ])}
   '';
 
   meta = with lib; {
diff --git a/pkgs/applications/misc/terminal-typeracer/default.nix b/pkgs/applications/misc/terminal-typeracer/default.nix
new file mode 100644
index 000000000000..fa68703e8c0f
--- /dev/null
+++ b/pkgs/applications/misc/terminal-typeracer/default.nix
@@ -0,0 +1,34 @@
+{ stdenv
+, fetchFromGitLab
+, rustPlatform
+, pkg-config
+, openssl
+, sqlite
+, libiconv
+, Security
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "terminal-typeracer";
+  version = "2.0.2";
+
+  src = fetchFromGitLab {
+    owner = "ttyperacer";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "187xrqxalk2gxa22ki5q092llvliddrsc68cg4dvvy2xzq254jfy";
+  };
+
+  cargoSha256 = "0ky8m23fjjbv7fr9776fjczpg0d43jxwnjxjpwz56jpynwnihfkl";
+
+  buildInputs = [ openssl sqlite ] ++ stdenv.lib.optionals stdenv.isDarwin [ libiconv Security ];
+  nativeBuildInputs = [ pkg-config ];
+
+  meta = with stdenv.lib; {
+    description = "An open source terminal based version of Typeracer written in rust";
+    homepage = "https://gitlab.com/ttyperacer/terminal-typeracer";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ yoctocell ];
+    platforms = platforms.x86_64;
+  };
+}
diff --git a/pkgs/applications/networking/instant-messengers/neochat/default.nix b/pkgs/applications/networking/instant-messengers/neochat/default.nix
index 39a298b122d8..f720f56e6ae1 100644
--- a/pkgs/applications/networking/instant-messengers/neochat/default.nix
+++ b/pkgs/applications/networking/instant-messengers/neochat/default.nix
@@ -7,6 +7,7 @@
 , qttools
 , qtquickcontrols2
 , qtmultimedia
+, qtgraphicaleffects
 , qtkeychain
 , libpulseaudio
 , olm
@@ -14,6 +15,7 @@
 , cmark
 , extra-cmake-modules
 , kirigami2
+, kitemmodels
 , ki18n
 , knotifications
 , kdbusaddons
@@ -40,10 +42,12 @@ mkDerivation rec {
     qtkeychain
     qtquickcontrols2
     qtmultimedia
+    qtgraphicaleffects
     olm
     libsecret
     cmark
     kirigami2
+    kitemmodels
     ki18n
     knotifications
     kdbusaddons
diff --git a/pkgs/applications/networking/instant-messengers/rambox/pro.nix b/pkgs/applications/networking/instant-messengers/rambox/pro.nix
index d39091d4618e..3cdf1339e3bf 100644
--- a/pkgs/applications/networking/instant-messengers/rambox/pro.nix
+++ b/pkgs/applications/networking/instant-messengers/rambox/pro.nix
@@ -1,11 +1,11 @@
-{ autoPatchelfHook, electron_4, fetchurl, makeDesktopItem, makeWrapper, nodePackages, nss, stdenv, xdg_utils, xorg }:
+{ autoPatchelfHook, electron_7, fetchurl, makeDesktopItem, makeWrapper, nodePackages, nss, stdenv, xdg_utils, xorg }:
 
 let
-  electron = electron_4;
+  electron = electron_7;
 in
 stdenv.mkDerivation rec {
   pname = "rambox-pro";
-  version = "1.3.2";
+  version = "1.4.1";
 
   dontBuild = true;
   dontStrip = true;
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "https://github.com/ramboxapp/download/releases/download/v${version}/RamboxPro-${version}-linux-x64.tar.gz";
-    sha256 = "010v5i8lxfz77cb5cn9va5cbnfa28nzdymk5k2fcpi65jldw1pxx";
+    sha256 = "1bd4fba3ac8c20fa557ebfb110f6503d36e6c3dba0401d1073529dcae2c2ec1e";
   };
 
   installPhase = ''
diff --git a/pkgs/applications/virtualization/charliecloud/default.nix b/pkgs/applications/virtualization/charliecloud/default.nix
index d6cbc25d883b..79e32007144f 100644
--- a/pkgs/applications/virtualization/charliecloud/default.nix
+++ b/pkgs/applications/virtualization/charliecloud/default.nix
@@ -2,14 +2,14 @@
 
 stdenv.mkDerivation rec {
 
-  version = "0.20";
+  version = "0.21";
   pname = "charliecloud";
 
   src = fetchFromGitHub {
     owner = "hpc";
     repo = "charliecloud";
     rev = "v${version}";
-    sha256 = "15ihffwhpjnzgz0ir5vc9la4fwkqj91vmrcsb2r58ikq7h9sk45j";
+    sha256 = "Y/tH6Znq//HBA/FHfIm2Wpppx6TiL7CqKtZFDc/XSNc=";
   };
 
   nativeBuildInputs = [ autoreconfHook makeWrapper ];
diff --git a/pkgs/data/themes/sweet/default.nix b/pkgs/data/themes/sweet/default.nix
index 9d3603cbf520..6ba7ae40c682 100644
--- a/pkgs/data/themes/sweet/default.nix
+++ b/pkgs/data/themes/sweet/default.nix
@@ -1,46 +1,46 @@
-{ stdenv, fetchurl, unzip }:
+{ stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
   pname = "sweet";
-  version = "1.10.5";
+  version = "2.0";
 
   srcs = [
     (fetchurl {
-      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet-Ambar-Blue.zip";
-      sha256 = "11040hx8ci4vbnyaj63zj924v0ln7rjm9a28mcqdax60h3dp12lj";
+      url = "https://github.com/EliverLara/Sweet/releases/download/${version}/Sweet-Ambar-Blue.tar.xz";
+      sha256 = "028pk07im7pab8a2vh3bvjm8jg37dpvn4c1mwn6vhb6wcr9v5c75";
     })
     (fetchurl {
-      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet-Ambar.zip";
-      sha256 = "0lvnjmirpwdav8q0bfbhybwkr2h6dilc7lhhj18xd2k57xadjmxr";
+      url = "https://github.com/EliverLara/Sweet/releases/download/${version}/Sweet-Ambar.tar.xz";
+      sha256 = "0zmdmqndj65kr43g3z57blrmv0y856zlfprm6y45zbf4xz3ybkg6";
     })
     (fetchurl {
-      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet-Dark.zip";
-      sha256 = "0a7mh1pgvi8w1ahsmvgnmpdawm30lcjqk4zqvg0lqadsd04dn4h1";
+      url = "https://github.com/EliverLara/Sweet/releases/download/${version}/Sweet-Dark.tar.xz";
+      sha256 = "02sw664fkrfpsygspq8fn4zgk8rxs9rd29nnx6nyvkji68mb51s6";
     })
     (fetchurl {
-      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet-mars.zip";
-      sha256 = "0n2dkl35qrik10wvhvkayyra987p03g56pxhz5kc73cbsl5zd96l";
+      url = "https://github.com/EliverLara/Sweet/releases/download/${version}/Sweet-mars.tar.xz";
+      sha256 = "14rl3il61jyqwiqlpgbh397q3rcs7jcf2pvr2763ar5a9czmy8h6";
     })
     (fetchurl {
-      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet.zip";
-      sha256 = "0wwmc3wj2pjg4kimfkvcsimk3s4s7l7k000vxqi8yjlfs70f273c";
+      url = "https://github.com/EliverLara/Sweet/releases/download/${version}/Sweet.tar.xz";
+      sha256 = "0rza3yxwj256ibqimymjhd6lpjzr7fkhggq0ijdg1wab3q91x66q";
     })
   ];
 
-  nativeBuildInputs = [ unzip ];
-
   sourceRoot = ".";
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/themes/
     cp -a Sweet* $out/share/themes/
     rm $out/share/themes/*/{LICENSE,README*}
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
     description = "Light and dark colorful Gtk3.20+ theme";
     homepage = "https://github.com/EliverLara/Sweet";
-    license = licenses.gpl3;
+    license = licenses.gpl3Only;
     maintainers = with maintainers; [ fuzen ];
     platforms = platforms.linux;
   };
diff --git a/pkgs/desktops/xfce/applications/mousepad/default.nix b/pkgs/desktops/xfce/applications/mousepad/default.nix
index 6f841958c795..3c84f5558a11 100644
--- a/pkgs/desktops/xfce/applications/mousepad/default.nix
+++ b/pkgs/desktops/xfce/applications/mousepad/default.nix
@@ -4,6 +4,7 @@ mkXfceDerivation {
   category = "apps";
   pname = "mousepad";
   version = "0.4.2";
+  odd-unstable = false;
 
   sha256 = "0a35vaq4l0d8vzw7hqpvbgkr3wj1sqr2zvj7bc5z4ikz2cppqj7p";
 
diff --git a/pkgs/desktops/xfce/applications/orage/default.nix b/pkgs/desktops/xfce/applications/orage/default.nix
index 31438a1fc79e..3af6c0a6bbab 100644
--- a/pkgs/desktops/xfce/applications/orage/default.nix
+++ b/pkgs/desktops/xfce/applications/orage/default.nix
@@ -1,18 +1,23 @@
-{ lib, fetchpatch, mkXfceDerivation, dbus-glib, gtk2, libical, libnotify, tzdata
-, popt, libxfce4ui, xfce4-panel, withPanelPlugin ? true }:
+{ stdenv, fetchurl, fetchpatch, pkg-config, intltool, dbus-glib, gtk2, libical, libnotify, tzdata
+, popt, libxfce4ui, xfce4-panel, withPanelPlugin ? true, wrapGAppsHook, xfce }:
 
 assert withPanelPlugin -> libxfce4ui != null && xfce4-panel != null;
 
 let
-  inherit (lib) optionals;
+  inherit (stdenv.lib) optionals;
 in
 
-mkXfceDerivation {
-  category = "archive";
+stdenv.mkDerivation rec {
   pname = "orage";
   version = "4.12.1";
 
-  sha256 = "04z6y1vfaz1im1zq1zr7cf8pjibjhj9zkyanbp7vn30q520yxa0m";
+  src = fetchurl {
+    url = "https://archive.xfce.org/src/apps/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.bz2";
+    sha256 = "0qlhvnl2m33vfxqlbkic2nmfpwyd4mq230jzhs48cg78392amy9w";
+  };
+
+  nativeBuildInputs = [ pkg-config intltool wrapGAppsHook ];
+
   buildInputs = [ dbus-glib gtk2 libical libnotify popt ]
     ++ optionals withPanelPlugin [ libxfce4ui xfce4-panel ];
 
@@ -33,7 +38,16 @@ mkXfceDerivation {
     })
   ];
 
-  meta = {
-    description = "A simple calendar application with reminders";
+  passthru.updateScript = xfce.updateScript {
+    inherit pname version;
+    attrPath = "xfce.${pname}";
+    versionLister = xfce.archiveLister "apps" pname;
+  };
+
+  meta = with stdenv.lib; {
+    description = "Simple calendar application with reminders";
+    homepage = "https://git.xfce.org/archive/orage/";
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
   };
 }
diff --git a/pkgs/desktops/xfce/core/xfwm4/default.nix b/pkgs/desktops/xfce/core/xfwm4/default.nix
index 7ab12461046b..df46a80c4b7b 100644
--- a/pkgs/desktops/xfce/core/xfwm4/default.nix
+++ b/pkgs/desktops/xfce/core/xfwm4/default.nix
@@ -5,9 +5,9 @@
 mkXfceDerivation {
   category = "xfce";
   pname = "xfwm4";
-  version = "4.14.5";
+  version = "4.14.6";
 
-  sha256 = "0xxprhs8g00ysrl25y6z9agih6wb7n29v5f5m2icaz7yjvj1k9iv";
+  sha256 = "1ml5b4nn8laqhjihfqqsbjn66525abhin5d32bplh1k9yfxw4xi4";
 
   nativeBuildInputs = [ exo librsvg ];
 
diff --git a/pkgs/desktops/xfce/mkXfceDerivation.nix b/pkgs/desktops/xfce/mkXfceDerivation.nix
index 4c6edf99b611..8709b84820c4 100644
--- a/pkgs/desktops/xfce/mkXfceDerivation.nix
+++ b/pkgs/desktops/xfce/mkXfceDerivation.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, pkgconfig, xfce4-dev-tools, hicolor-icon-theme, xfce, wrapGAppsHook }:
+{ stdenv, fetchFromGitLab, pkgconfig, xfce4-dev-tools, hicolor-icon-theme, xfce, wrapGAppsHook }:
 
 { category
 , pname
@@ -23,14 +23,16 @@ let
     zipAttrsWithNames (filterAttrNames isList (head attrsets)) (_: concatLists) attrsets;
 
   template = rec {
-    name = "${pname}-${version}";
+    inherit pname version;
 
     nativeBuildInputs = [ pkgconfig xfce4-dev-tools wrapGAppsHook ];
     buildInputs = [ hicolor-icon-theme ];
     configureFlags = [ "--enable-maintainer-mode" ];
 
-    src = fetchgit {
-      url = "git://git.xfce.org/${category}/${pname}";
+    src = fetchFromGitLab {
+      domain = "gitlab.xfce.org";
+      owner = category;
+      repo = pname;
       inherit rev sha256;
     };
 
@@ -41,11 +43,11 @@ let
 
     passthru.updateScript = xfce.updateScript {
       inherit pname version attrPath rev-prefix odd-unstable patchlevel-unstable;
-      versionLister = xfce.gitLister src.url;
+      versionLister = xfce.gitLister src.meta.homepage;
     };
 
     meta = with stdenv.lib; {
-      homepage = "https://git.xfce.org/${category}/${pname}/about";
+      homepage = "https://gitlab.xfce.org/${category}/${pname}/about";
       license = licenses.gpl2; # some libraries are under LGPLv2+
       platforms = platforms.linux;
     };
diff --git a/pkgs/desktops/xfce/panel-plugins/xfce4-namebar-plugin.nix b/pkgs/desktops/xfce/panel-plugins/xfce4-namebar-plugin.nix
index affc957c51df..fcd40462f6d6 100644
--- a/pkgs/desktops/xfce/panel-plugins/xfce4-namebar-plugin.nix
+++ b/pkgs/desktops/xfce/panel-plugins/xfce4-namebar-plugin.nix
@@ -1,29 +1,36 @@
-{ stdenv, pkgconfig, fetchFromGitHub, python2, vala_0_40
-, gtk2, libwnck, libxfce4util, xfce4-panel, wafHook }:
+{ stdenv, pkgconfig, fetchFromGitHub, python2, vala_0_46
+, gtk3, libwnck3, libxfce4util, xfce4-panel, wafHook, xfce }:
 
 stdenv.mkDerivation rec {
-  ver = "0.3.1";
-  rev = "07a23b3";
-  name = "xfce4-namebar-plugin-${ver}";
+  pname = "xfce4-namebar-plugin";
+  version = "1.0.0";
 
   src = fetchFromGitHub {
-    owner = "TiZ-EX1";
-    repo = "xfce4-namebar-plugin";
-    rev = rev;
-    sha256 = "1sl4qmjywfvv53ch7hyfysjfd91zl38y7gdw2y3k69vkzd3h18ad";
+    owner = "HugLifeTiZ";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0l70f6mzkscsj4wr43wp5c0l2qnf85vj24cv02bjrh3bzz6wkak8";
   };
 
-  nativeBuildInputs = [ pkgconfig wafHook ];
-  buildInputs = [ python2 vala_0_40 gtk2 libwnck libxfce4util xfce4-panel ];
+  nativeBuildInputs = [ pkgconfig vala_0_46 wafHook ];
+  buildInputs = [ gtk3 libwnck3 libxfce4util xfce4-panel ];
 
   postPatch = ''
-    substituteInPlace src/preferences.vala --replace 'Environment.get_system_data_dirs()' "{ \"$out/share\" }"
-    substituteInPlace src/namebar.vala     --replace 'Environment.get_system_data_dirs()' "{ \"$out/share\" }"
+    for f in src/preferences.vala src/namebar.vala; do
+      substituteInPlace $f --replace 'var dirs = Environment.get_system_data_dirs()' "string[] dirs = { \"$out/share\" }"
+    done
   '';
 
+  passthru.updateScript = xfce.updateScript {
+    inherit pname version;
+    attrPath = "xfce.${pname}";
+    versionLister = xfce.gitLister src.meta.homepage;
+    rev-prefix = "v";
+  };
+
   meta = with stdenv.lib; {
-    homepage = "https://github.com/TiZ-EX1/xfce4-namebar-plugin";
-    description = "A plugins which integrates titlebar and window controls into the xfce4-panel";
+    homepage = "https://github.com/HugLifeTiZ/xfce4-namebar-plugin";
+    description = "Plugin which integrates titlebar and window controls into the xfce4-panel";
     license = licenses.mit;
     platforms = platforms.linux;
     maintainers = [ maintainers.volth ];
diff --git a/pkgs/desktops/xfce/panel-plugins/xfce4-whiskermenu-plugin/default.nix b/pkgs/desktops/xfce/panel-plugins/xfce4-whiskermenu-plugin/default.nix
index ac9f22a9a0cc..ef269d64e04c 100644
--- a/pkgs/desktops/xfce/panel-plugins/xfce4-whiskermenu-plugin/default.nix
+++ b/pkgs/desktops/xfce/panel-plugins/xfce4-whiskermenu-plugin/default.nix
@@ -5,6 +5,7 @@ mkXfceDerivation {
   pname = "xfce4-whiskermenu-plugin";
   version = "2.4.6";
   rev-prefix = "v";
+  odd-unstable = false;
   sha256 = "03asfaxqbhawzb3870az7qgid5y7cg3ip8h6r4z8kavcd0b7x4ii";
 
   nativeBuildInputs = [ cmake ];
diff --git a/pkgs/development/python-modules/gpy/default.nix b/pkgs/development/python-modules/gpy/default.nix
index dbc5791ac335..e4a20bc83d72 100644
--- a/pkgs/development/python-modules/gpy/default.nix
+++ b/pkgs/development/python-modules/gpy/default.nix
@@ -1,5 +1,14 @@
-{ stdenv, buildPythonPackage, fetchPypi
-, numpy, scipy, six, paramz, nose, matplotlib, cython }:
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+, numpy
+, scipy
+, six
+, paramz
+, matplotlib
+, cython
+, nose
+}:
 
 buildPythonPackage rec {
   pname = "GPy";
@@ -10,21 +19,35 @@ buildPythonPackage rec {
     sha256 = "04faf0c24eacc4dea60727c50a48a07ddf9b5751a3b73c382105e2a31657c7ed";
   };
 
-  # running tests produces "ImportError: cannot import name 'linalg_cython'"
-  # even though Cython has run
-  checkPhase = "nosetests -d";
-  doCheck = false;
-
+  buildInputs = [ cython ];
+  propagatedBuildInputs = [ numpy scipy six paramz matplotlib ];
   checkInputs = [ nose ];
 
-  buildInputs = [ cython ];
+  # $ nosetests GPy/testing/*.py
+  # => Ran 483 tests in 112.146s (on 8 cores)
+  # So instead, run shorter set of tests
+  checkPhase = ''
+    nosetests GPy/testing/linalg_test.py
+  '';
 
-  propagatedBuildInputs = [ numpy scipy six paramz matplotlib ];
+  # Rebuild cython-generated .c files since the included
+  # ones were built with an older version of cython that is
+  # incompatible with python3.9
+  preBuild = ''
+    for fn in $(find . -name '*.pyx'); do
+      echo $fn | sed 's/\.\.pyx$/\.c/' | xargs ${cython}/bin/cython -3
+    done
+  '';
+
+  pythonImportsCheck = [
+    "GPy"
+  ];
 
   meta = with stdenv.lib; {
     description = "Gaussian process framework in Python";
     homepage = "https://sheffieldml.github.io/GPy";
     license = licenses.bsd3;
     maintainers = with maintainers; [ bcdarwin ];
+    broken = stdenv.isDarwin;  # See inscrutable error message here: https://github.com/NixOS/nixpkgs/pull/107653#issuecomment-751527547
   };
 }
diff --git a/pkgs/development/python-modules/paramz/default.nix b/pkgs/development/python-modules/paramz/default.nix
index 430d91a60ecc..63014647880d 100644
--- a/pkgs/development/python-modules/paramz/default.nix
+++ b/pkgs/development/python-modules/paramz/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, numpy, scipy, six, decorator }:
+{ stdenv, buildPythonPackage, fetchPypi, numpy, scipy, six, decorator, nose }:
 
 buildPythonPackage rec {
   pname = "paramz";
@@ -10,6 +10,12 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [ numpy scipy six decorator ];
+  checkInputs = [ nose ];
+
+  # Ran 113 tests in 3.082s
+  checkPhase = ''
+      nosetests -v paramz/tests
+  '';
 
   meta = with stdenv.lib; {
     description = "Parameterization framework for parameterized model creation and handling";
diff --git a/pkgs/development/python-modules/pykka/default.nix b/pkgs/development/python-modules/pykka/default.nix
index 6f76ca9850fe..075b607c772e 100644
--- a/pkgs/development/python-modules/pykka/default.nix
+++ b/pkgs/development/python-modules/pykka/default.nix
@@ -1,27 +1,21 @@
-{ stdenv
-, buildPythonPackage
-, fetchFromGitHub
-}:
+{ lib, buildPythonPackage, fetchPypi, pytestCheckHook, pytest-mock }:
 
 buildPythonPackage rec {
-  pname = "pykka";
-  version = "2.0.1";
+  pname = "Pykka";
+  version = "2.0.3";
 
-  src = fetchFromGitHub {
-    owner = "jodal";
-    repo = pname;
-    rev = "refs/tags/v${version}";
-    sha256 = "011rvv3vzj9rpwaq6vfpz9hfwm6gx1jmad4iri6z12g8nnlpydhs";
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "4b9d2363365b3455a0204bf163f09bd351d24b938c618c79d975a9510e128e95";
   };
 
-  # There are no tests
-  doCheck = false;
+  checkInputs = [ pytestCheckHook pytest-mock ];
 
-  meta = with stdenv.lib; {
-    homepage = "http://www.pykka.org";
+  meta = with lib; {
+    homepage = "https://www.pykka.org/";
     description = "A Python implementation of the actor model";
+    changelog = "https://github.com/jodal/pykka/blob/v${version}/docs/changes.rst";
+    maintainers = [ maintainers.marsam ];
     license = licenses.asl20;
-    maintainers = [];
   };
-
 }
diff --git a/pkgs/misc/ptouch-print/default.nix b/pkgs/misc/ptouch-print/default.nix
new file mode 100644
index 000000000000..ac15ec633097
--- /dev/null
+++ b/pkgs/misc/ptouch-print/default.nix
@@ -0,0 +1,34 @@
+{ stdenv
+, fetchgit
+, autoreconfHook
+, gd
+, libusb1
+}:
+
+stdenv.mkDerivation rec {
+  pname = "ptouch-print";
+  version = "1.4.3";
+
+  src = fetchgit {
+    url = "https://mockmoon-cybernetics.ch/cgi/cgit/linux/ptouch-print.git";
+    rev = "v${version}";
+    sha256 = "0i57asg2hj1nfwy5lcb0vhrpvb9dqfhf81vh4i929h1kiqhlw2hx";
+  };
+
+  nativeBuildInputs = [
+    autoreconfHook
+  ];
+
+  buildInputs = [
+    gd
+    libusb1
+  ];
+
+  meta = with stdenv.lib; {
+    description = "Command line tool to print labels on Brother P-Touch printers on Linux";
+    license = licenses.gpl3Plus;
+    homepage = "https://mockmoon-cybernetics.ch/computer/p-touch2430pc/";
+    maintainers = with maintainers; [ shamilton ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/misc/vim-plugins/generated.nix b/pkgs/misc/vim-plugins/generated.nix
index ed4e1b9edacc..ccaa9b1ff1b2 100644
--- a/pkgs/misc/vim-plugins/generated.nix
+++ b/pkgs/misc/vim-plugins/generated.nix
@@ -2146,6 +2146,18 @@ let
     meta.homepage = "https://github.com/vim-scripts/mayansmoke/";
   };
 
+  mkdx = buildVimPluginFrom2Nix {
+    pname = "mkdx";
+    version = "2020-10-12";
+    src = fetchFromGitHub {
+      owner = "SidOfc";
+      repo = "mkdx";
+      rev = "65f343251d99c20db9f22e9c836b709f249129f6";
+      sha256 = "06xz12h87wkcpn2w22k6m7gxshk5x75hg8ql9cmja89v0birsn0f";
+    };
+    meta.homepage = "https://github.com/SidOfc/mkdx/";
+  };
+
   molokai = buildVimPluginFrom2Nix {
     pname = "molokai";
     version = "2015-11-11";
diff --git a/pkgs/misc/vim-plugins/vim-plugin-names b/pkgs/misc/vim-plugins/vim-plugin-names
index 560595b2faf0..c559a73b5b52 100644
--- a/pkgs/misc/vim-plugins/vim-plugin-names
+++ b/pkgs/misc/vim-plugins/vim-plugin-names
@@ -497,6 +497,7 @@ Shougo/vimproc.vim
 Shougo/vimshell.vim
 shumphrey/fugitive-gitlab.vim
 sickill/vim-pasta
+SidOfc/mkdx
 simnalamburt/vim-mundo
 SirVer/ultisnips
 sjl/gundo.vim
diff --git a/pkgs/tools/audio/aucdtect/default.nix b/pkgs/tools/audio/aucdtect/default.nix
deleted file mode 100644
index ad9d5fb86905..000000000000
--- a/pkgs/tools/audio/aucdtect/default.nix
+++ /dev/null
@@ -1,33 +0,0 @@
-{ stdenv, fetchurl, lib, rpmextract }:
-
-with lib;
-
-stdenv.mkDerivation rec {
-  pname = "aucdtect";
-  version = "0.8-2";
-
-  src = fetchurl {
-    url = "http://www.true-audio.com/ftp/${pname}-${version}.i586.rpm";
-    sha256 = "1lp5f0rq5b5n5il0c64m00gcfskarvgqslpryms9443d200y6mmd";
-  };
-
-  unpackCmd = "${rpmextract}/bin/rpmextract $src";
-
-  installPhase = ''
-    runHook preInstall
-
-    install -Dm755 local/bin/auCDtect $out/bin/aucdtect
-
-    runHook postInstall
-  '';
-
-  dontStrip = true;
-
-  meta = with stdenv.lib; {
-    description = "Verify authenticity of lossless audio files";
-    homepage = "http://tausoft.org";
-    license = licenses.unfreeRedistributable;
-    maintainers = with maintainers; [ peterhoeg ];
-    platforms = platforms.linux;
-  };
-}
diff --git a/pkgs/tools/networking/kapp/default.nix b/pkgs/tools/networking/kapp/default.nix
new file mode 100644
index 000000000000..130763385291
--- /dev/null
+++ b/pkgs/tools/networking/kapp/default.nix
@@ -0,0 +1,23 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+buildGoModule rec {
+  pname = "kapp";
+  version = "0.35.0";
+
+  src = fetchFromGitHub {
+    owner = "vmware-tanzu";
+    repo = "carvel-kapp";
+    rev = "v${version}";
+    sha256 = "1i4hpqpbwqb0yg3rx4z733zfslq3svmahfr39ss1ydylsipl02mg";
+  };
+
+  vendorSha256 = null;
+
+  subPackages = [ "cmd/kapp" ];
+
+  meta = with lib; {
+    description = "CLI tool that encourages Kubernetes users to manage bulk resources with an application abstraction for grouping";
+    homepage = "https://get-kapp.io";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ brodes ];
+  };
+}
diff --git a/pkgs/tools/security/dnsx/default.nix b/pkgs/tools/security/dnsx/default.nix
new file mode 100644
index 000000000000..21bf7d4664cc
--- /dev/null
+++ b/pkgs/tools/security/dnsx/default.nix
@@ -0,0 +1,31 @@
+{ buildGoModule
+, fetchFromGitHub
+, stdenv
+}:
+
+buildGoModule rec {
+  pname = "dnsx";
+  version = "1.0.1";
+
+  src = fetchFromGitHub {
+    owner = "projectdiscovery";
+    repo = "dnsx";
+    rev = "v${version}";
+    sha256 = "1pgq21pbnz2dm272zrhd455njj5vg4kywpd230acj675nlgir6y1";
+  };
+
+  vendorSha256 = "0j2cqvskzxbyfrvsv4gm4qwfjm0digizcg157z5iignnknddajax";
+
+  meta = with stdenv.lib; {
+    description = "Fast and multi-purpose DNS toolkit";
+    longDescription = ''
+      dnsx is a fast and multi-purpose DNS toolkit allow to run multiple
+      probers using retryabledns library, that allows you to perform
+      multiple DNS queries of your choice with a list of user supplied
+      resolvers.
+    '';
+    homepage = "https://github.com/projectdiscovery/dnsx";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/tools/security/nuclei/default.nix b/pkgs/tools/security/nuclei/default.nix
new file mode 100644
index 000000000000..22013352a38d
--- /dev/null
+++ b/pkgs/tools/security/nuclei/default.nix
@@ -0,0 +1,36 @@
+{ buildGoModule
+, fetchFromGitHub
+, stdenv
+}:
+
+buildGoModule rec {
+  pname = "nuclei";
+  version = "2.2.0";
+
+  src = fetchFromGitHub {
+    owner = "projectdiscovery";
+    repo = "nuclei";
+    rev = "v${version}";
+    sha256 = "0xrvza86aczlnb11x58fiqch5g0q6gvpxwsi5dq3akfi95gk3a3x";
+  };
+
+  vendorSha256 = "1v3ax8l1lgp2vs50gsa2fhdd6bvyfdlkd118akrqmwxahyyyqycv";
+
+  preBuild = ''
+    mv v2/* .
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Tool for configurable targeted scanning";
+    longDescription = ''
+      Nuclei is used to send requests across targets based on a template
+      leading to zero false positives and providing effective scanning
+      for known paths. Main use cases for nuclei are during initial
+      reconnaissance phase to quickly check for low hanging fruits or
+      CVEs across targets that are known and easily detectable.
+    '';
+    homepage = "https://github.com/projectdiscovery/nuclei";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 3117e99e04fc..ee622e909676 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -61,6 +61,7 @@ mapAliases ({
   asterisk_15 = throw "asterisk_15: Asterisk 15 is end of life and has been removed."; # added 2020-10-07
   at_spi2_atk = at-spi2-atk; # added 2018-02-25
   at_spi2_core = at-spi2-core; # added 2018-02-25
+  aucdtect = throw "aucdtect: Upstream no longer provides download urls."; # added 2020-12-26
   avldrums-lv2 = x42-avldrums; # added 2020-03-29
   bar-xft = lemonbar-xft;  # added 2015-01-16
   bashCompletion = bash-completion; # Added 2016-09-28
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d39584556602..5ee8e5233c30 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -222,6 +222,8 @@ in
 
   ptags = callPackage ../development/tools/misc/ptags { };
 
+  ptouch-print = callPackage ../misc/ptouch-print { };
+
   demoit = callPackage ../servers/demoit { };
 
   deviceTree = callPackage ../os-specific/linux/device-tree {};
@@ -3381,6 +3383,8 @@ in
 
   dnstop = callPackage ../tools/networking/dnstop { };
 
+  dnsx = callPackage ../tools/security/dnsx { };
+
   dhcp = callPackage ../tools/networking/dhcp { };
 
   dhcpdump = callPackage ../tools/networking/dhcpdump { };
@@ -5252,6 +5256,8 @@ in
 
   lvmsync = callPackage ../tools/backup/lvmsync { };
 
+  kapp = callPackage ../tools/networking/kapp {};
+
   kdbg = libsForQt5.callPackage ../development/tools/misc/kdbg { };
 
   kippo = callPackage ../servers/kippo { };
@@ -19949,6 +19955,8 @@ in
 
   nuclear = callPackage ../applications/audio/nuclear { };
 
+  nuclei = callPackage ../tools/security/nuclei { };
+
   nullmailer = callPackage ../servers/mail/nullmailer {
     stdenv = gccStdenv;
   };
@@ -24541,6 +24549,10 @@ in
 
   twinkle = qt5.callPackage ../applications/networking/instant-messengers/twinkle { };
 
+  terminal-typeracer = callPackage ../applications/misc/terminal-typeracer {
+    inherit (darwin.apple_sdk.frameworks) Security;
+  };
+
   ueberzug = with python3Packages; toPythonApplication ueberzug;
 
   uhhyou.lv2 = callPackage ../applications/audio/uhhyou.lv2 { };
@@ -28781,8 +28793,6 @@ in
 
   mpvc = callPackage ../applications/misc/mpvc { };
 
-  aucdtect = callPackage ../tools/audio/aucdtect { };
-
   togglesg-download = callPackage ../tools/misc/togglesg-download { };
 
   discord = import ../applications/networking/instant-messengers/discord {