diff --git a/nixos/modules/services/x11/desktop-managers/plasma5.nix b/nixos/modules/services/x11/desktop-managers/plasma5.nix
index ad0385ddeed..b4f45a24efd 100644
--- a/nixos/modules/services/x11/desktop-managers/plasma5.nix
+++ b/nixos/modules/services/x11/desktop-managers/plasma5.nix
@@ -200,7 +200,7 @@ in
 
       security.wrappers = {
         kcheckpass.source = "${lib.getBin plasma5.kscreenlocker}/libexec/kcheckpass";
-        start_kdeinit.source = "${lib.getBin pkgs.kinit}/libexec/kf5/start_kdeinit";
+        start_kdeinit.source = "${lib.getBin pkgs.kdeFrameworks.kinit}/libexec/kf5/start_kdeinit";
         kwin_wayland = {
           source = "${lib.getBin plasma5.kwin}/bin/kwin_wayland";
           capabilities = "cap_sys_nice+ep";
diff --git a/nixos/modules/services/x11/display-managers/sddm.nix b/nixos/modules/services/x11/display-managers/sddm.nix
index 4040b903426..a39bb55b38c 100644
--- a/nixos/modules/services/x11/display-managers/sddm.nix
+++ b/nixos/modules/services/x11/display-managers/sddm.nix
@@ -9,7 +9,12 @@ let
   cfg = dmcfg.sddm;
   xEnv = config.systemd.services.display-manager.environment;
 
-  inherit (pkgs) sddm;
+  sddm = if config.services.xserver.desktopManager.lxqt.enable then
+    # TODO: Move lxqt to libsForQt515
+    pkgs.libsForQt514.sddm
+  else
+    pkgs.libsForQt5.sddm
+  ;
 
   xserverWrapper = pkgs.writeScript "xserver-wrapper" ''
     #!/bin/sh
diff --git a/pkgs/applications/editors/kile/default.nix b/pkgs/applications/editors/kile/default.nix
index 1f1e43d196c..6819c4337f4 100644
--- a/pkgs/applications/editors/kile/default.nix
+++ b/pkgs/applications/editors/kile/default.nix
@@ -29,14 +29,17 @@ mkDerivation rec {
     sha256 = "BEmSEv/LJPs6aCkUmnyuTGrV15WYXwgIANbfcviMXfA=";
   };
 
-  nativeBuildInputs = [ extra-cmake-modules wrapGAppsHook ];
+  nativeBuildInputs = [
+    extra-cmake-modules
+    wrapGAppsHook
+    kdoctools
+  ];
 
-  propagatedBuildInputs = [
+  buildInputs = [
     kconfig
     kcrash
     kdbusaddons
     kdelibs4support
-    kdoctools
     kguiaddons
     kiconthemes
     kinit
@@ -48,6 +51,10 @@ mkDerivation rec {
     poppler
     qtscript
   ];
+  dontWrapGApps = true;
+  preFixup = ''
+    makeWrapperArgs+=("''${gappsWrapperArgs[@]}")
+  '';
 
   propagatedUserEnvPkgs = [ konsole ];
 
diff --git a/pkgs/applications/misc/tellico/default.nix b/pkgs/applications/misc/tellico/default.nix
index 6425be00418..fa725ad9c96 100644
--- a/pkgs/applications/misc/tellico/default.nix
+++ b/pkgs/applications/misc/tellico/default.nix
@@ -1,7 +1,7 @@
 { lib
 , fetchurl
 , mkDerivation
-, kdeApplications
+, libkcddb
 , kinit
 , kdelibs4support
 , solid
@@ -46,7 +46,7 @@ mkDerivation rec {
     exempi
     extra-cmake-modules
     karchive
-    kdeApplications.libkcddb
+    libkcddb
     kdelibs4support
     kfilemetadata
     khtml
diff --git a/pkgs/applications/networking/browsers/firefox/wrapper.nix b/pkgs/applications/networking/browsers/firefox/wrapper.nix
index 9c8625495b2..cc6cc72e27b 100644
--- a/pkgs/applications/networking/browsers/firefox/wrapper.nix
+++ b/pkgs/applications/networking/browsers/firefox/wrapper.nix
@@ -4,7 +4,7 @@
 , flashplayer, hal-flash
 , ffmpeg, xorg, alsaLib, libpulseaudio, libcanberra-gtk2, libglvnd
 , gnome3/*.gnome-shell*/
-, browserpass, chrome-gnome-shell, uget-integrator, plasma-browser-integration, bukubrow
+, browserpass, chrome-gnome-shell, uget-integrator, plasma5, bukubrow
 , tridactyl-native
 , fx_cast_bridge
 , udev
@@ -65,7 +65,7 @@ let
           ++ lib.optional (cfg.enableTridactylNative or false) tridactyl-native
           ++ lib.optional (cfg.enableGnomeExtensions or false) chrome-gnome-shell
           ++ lib.optional (cfg.enableUgetIntegrator or false) uget-integrator
-          ++ lib.optional (cfg.enablePlasmaBrowserIntegration or false) plasma-browser-integration
+          ++ lib.optional (cfg.enablePlasmaBrowserIntegration or false) plasma5.plasma-browser-integration
           ++ lib.optional (cfg.enableFXCastBridge or false) fx_cast_bridge
           ++ extraNativeMessagingHosts
         );
diff --git a/pkgs/data/icons/maia-icon-theme/default.nix b/pkgs/data/icons/maia-icon-theme/default.nix
index ee539981fbc..2a6dbc512ac 100644
--- a/pkgs/data/icons/maia-icon-theme/default.nix
+++ b/pkgs/data/icons/maia-icon-theme/default.nix
@@ -1,4 +1,12 @@
-{ stdenv, fetchFromGitLab, cmake, extra-cmake-modules, gtk3, kdeFrameworks, hicolor-icon-theme }:
+{ stdenv
+, fetchFromGitLab
+, cmake
+, extra-cmake-modules
+, gtk3
+, plasma-framework
+, kwindowsystem
+, hicolor-icon-theme
+}:
 
 stdenv.mkDerivation {
   pname = "maia-icon-theme";
@@ -17,8 +25,8 @@ stdenv.mkDerivation {
     cmake
     extra-cmake-modules
     gtk3
-    kdeFrameworks.plasma-framework
-    kdeFrameworks.kwindowsystem
+    plasma-framework
+    kwindowsystem
   ];
 
   propagatedBuildInputs = [
diff --git a/pkgs/desktops/lxqt/default.nix b/pkgs/desktops/lxqt/default.nix
index 90e466f7471..1292da151ac 100644
--- a/pkgs/desktops/lxqt/default.nix
+++ b/pkgs/desktops/lxqt/default.nix
@@ -43,7 +43,7 @@ let
 
     ### OPTIONAL
     qterminal = callPackage ./qterminal {};
-    compton-conf = pkgs.qt5.callPackage ./compton-conf {};
+    compton-conf = qt5.callPackage ./compton-conf {};
     obconf-qt = callPackage ./obconf-qt {};
     lximage-qt = callPackage ./lximage-qt {};
     qps = callPackage ./qps {};
diff --git a/pkgs/desktops/plasma-5/default.nix b/pkgs/desktops/plasma-5/default.nix
index 8ab4b60156c..265c22b5565 100644
--- a/pkgs/desktops/plasma-5/default.nix
+++ b/pkgs/desktops/plasma-5/default.nix
@@ -36,7 +36,6 @@ let
   };
 
   mkDerivation = libsForQt5.callPackage ({ mkDerivation }: mkDerivation) {};
-  qtbase = libsForQt5.callPackage ({ qtbase }: qtbase) {};
 
   packages = self: with self;
     let
@@ -83,7 +82,6 @@ let
             setupHook = args.setupHook or defaultSetupHook;
 
             meta = {
-              broken = lib.versionAtLeast qtbase.version "5.15";
               license = with lib.licenses; [
                 lgpl21Plus lgpl3Plus bsd2 mit gpl2Plus gpl3Plus fdl12
               ];
diff --git a/pkgs/development/libraries/drumstick/default.nix b/pkgs/development/libraries/drumstick/default.nix
index 0d3e2913ce8..7cd826b1fe3 100644
--- a/pkgs/development/libraries/drumstick/default.nix
+++ b/pkgs/development/libraries/drumstick/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchurl, alsaLib, cmake, docbook_xsl, docbook_xml_dtd_45, doxygen
-, fluidsynth, pkgconfig, qt5
+, fluidsynth, pkgconfig, qtbase, qtsvg
 }:
 
 stdenv.mkDerivation rec {
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkgconfig docbook_xsl docbook_xml_dtd_45 docbook_xml_dtd_45 ];
   buildInputs = [
-    alsaLib doxygen fluidsynth qt5.qtbase qt5.qtsvg
+    alsaLib doxygen fluidsynth qtbase qtsvg
   ];
 
   meta = with stdenv.lib; {
diff --git a/pkgs/development/libraries/kdiagram/default.nix b/pkgs/development/libraries/kdiagram/default.nix
index 50f3e6a6c02..b9f16d3cfae 100644
--- a/pkgs/development/libraries/kdiagram/default.nix
+++ b/pkgs/development/libraries/kdiagram/default.nix
@@ -1,14 +1,18 @@
 {
-  mkDerivation, fetchurl, lib,
+  mkDerivation, fetchFromGitLab, lib,
   extra-cmake-modules, qttools,
   qtbase, qtsvg,
 }:
 
-mkDerivation {
-  name = "kdiagram-2.6.0";
-  src = fetchurl {
-    url = "https://download.kde.org/stable/kdiagram/2.6.0/src/kdiagram-2.6.0.tar.xz";
-    sha256 = "10hqk12wwgbiq4q5145s8v7v96j621ckq1yil9s4pihmgsnqsy02";
+mkDerivation rec {
+  pname = "kdiagram";
+  version = "2.7.0";
+  src = fetchFromGitLab {
+    domain = "invent.kde.org";
+    owner = "graphics";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "NSBNHPr8JzBn3y3ivhL0RjiXjDuPwZsTTOeI22pq3vc=";
   };
   nativeBuildInputs = [ extra-cmake-modules qttools ];
   propagatedBuildInputs = [ qtbase qtsvg ];
diff --git a/pkgs/development/libraries/kpmcore/default.nix b/pkgs/development/libraries/kpmcore/default.nix
index 7903fc74639..8cda52c4aec 100644
--- a/pkgs/development/libraries/kpmcore/default.nix
+++ b/pkgs/development/libraries/kpmcore/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchurl, extra-cmake-modules
-, qtbase, kdeFrameworks
+, qtbase, kio
 , libatasmart, parted
 , utillinux }:
 
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
     libatasmart
     parted # we only need the library
 
-    kdeFrameworks.kio
+    kio
 
     utillinux # needs blkid (note that this is not provided by utillinux-compat)
   ];
diff --git a/pkgs/os-specific/linux/cshatag/default.nix b/pkgs/os-specific/linux/cshatag/default.nix
new file mode 100644
index 00000000000..bc1b7f7ecf5
--- /dev/null
+++ b/pkgs/os-specific/linux/cshatag/default.nix
@@ -0,0 +1,32 @@
+{ lib, buildGoPackage, fetchFromGitHub }:
+
+buildGoPackage rec {
+  pname = "cshatag";
+  version = "2019-12-03";
+
+  goPackagePath = "github.com/rfjakob/cshatag";
+  goDeps = ./deps.nix;
+
+  src = fetchFromGitHub {
+    owner = "rfjakob";
+    repo = pname;
+    rev = "b169f0a9dd35a7381774eb176d4badf64d403560";
+    sha256 = "16kam3w75avh8khkk6jfdnxwggz2pw6ccv6v7d064j0fbb9y8x0v";
+  };
+
+  makeFlags = [ "PREFIX=$(out)" "GITVERSION=${version}" ];
+
+  postInstall = ''
+    # Install man page
+    cd go/src/${goPackagePath}
+    make install $makeFlags
+  '';
+
+  meta = with lib; {
+    description = "A tool to detect silent data corruption";
+    homepage = "https://github.com/rfjakob/cshatag";
+    license = licenses.mit;
+    platforms = platforms.linux;
+  };
+
+}
diff --git a/pkgs/os-specific/linux/cshatag/deps.nix b/pkgs/os-specific/linux/cshatag/deps.nix
new file mode 100644
index 00000000000..6daad985678
--- /dev/null
+++ b/pkgs/os-specific/linux/cshatag/deps.nix
@@ -0,0 +1,21 @@
+# This file was generated by https://github.com/kamilchm/go2nix v1.3.0
+[
+  {
+    goPackagePath = "github.com/pkg/xattr";
+    fetch = {
+      type = "git";
+      url = "https://github.com/pkg/xattr";
+      rev = "d304131d5e58ca76d8b31ceefbb0c85c7b2d2a36";
+      sha256 = "0bxskiai283zfra13z5f7q7f77zz2cgswaj6l6jr2nwnc3l5m80i";
+    };
+  }
+  {
+    goPackagePath = "golang.org/x/sys";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/sys";
+      rev = "201ba4db2418b54b698efb4d8082dcb504617cdb";
+      sha256 = "1cqaiwp19kl38g4d6brfhi32822rhnh2q8x1j0i6yg7a8dzfvbz6";
+    };
+  }
+]
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 4d5100f5f0c..2386398f3c8 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -752,4 +752,60 @@ mapAliases ({
 
   ant-dracula-theme = throw "ant-dracula-theme is now dracula-theme, and theme name is Dracula instead of Ant-Dracula.";
 
+  /* If these are in the scope of all-packages.nix, they cause collisions
+  between mixed versions of qt. See:
+  https://github.com/NixOS/nixpkgs/pull/101369 */
+
+  inherit (kdeFrameworks) breeze-icons oxygen-icons5;
+  inherit (kdeApplications)
+    akonadi akregator ark
+    bomber bovo
+    dolphin dragon
+    elisa
+    ffmpegthumbs filelight
+    granatier gwenview
+    k3b
+    kaddressbook kalzium kapptemplate kapman kate katomic
+    kblackbox kblocks kbounce
+    kcachegrind kcalc kcharselect kcolorchooser
+    kdenlive kdf kdialog kdiamond
+    keditbookmarks
+    kfind kfloppy
+    kget kgpg
+    khelpcenter
+    kig kigo killbots kitinerary
+    kleopatra klettres klines
+    kmag kmail kmines kmix kmplot
+    knavalbattle knetwalk knights
+    kollision kolourpaint kompare konsole kontact korganizer
+    kpkpass
+    krdc kreversi krfb
+    kshisen ksquares ksystemlog
+    kteatime ktimer ktouch kturtle
+    kwalletmanager kwave
+    marble minuet
+    okular
+    picmi
+    spectacle
+    yakuake
+  ;
+  inherit (plasma5)
+    bluedevil breeze-gtk breeze-qt5 breeze-grub breeze-plymouth discover
+    kactivitymanagerd kde-cli-tools kde-gtk-config kdeplasma-addons kgamma5
+    kinfocenter kmenuedit kscreen kscreenlocker ksshaskpass ksysguard
+    kwallet-pam kwayland-integration kwin kwrited milou oxygen plasma-browser-integration
+    plasma-desktop plasma-integration plasma-nm plasma-pa plasma-vault plasma-workspace
+    plasma-workspace-wallpapers polkit-kde-agent powerdevil sddm-kcm
+    systemsettings user-manager xdg-desktop-portal-kde
+  ;
+  inherit (plasma5.thirdParty)
+    plasma-applet-caffeine-plus
+    kwin-dynamic-workspaces
+    kwin-tiling
+    krohnkite
+  ;
+  inherit (libsForQt5)
+    sddm
+  ;
+
 })
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 002acf553a3..545ec843531 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6223,8 +6223,6 @@ in
 
   packagekit = callPackage ../tools/package-management/packagekit { };
 
-  packagekit-qt = libsForQt5.callPackage ../tools/package-management/packagekit/qt.nix { };
-
   packetdrill = callPackage ../tools/networking/packetdrill { };
 
   pacman = callPackage ../tools/package-management/pacman { };
@@ -8756,8 +8754,6 @@ in
 
   dotty = callPackage ../development/compilers/scala/dotty.nix { jre = jre8;};
 
-  drumstick = callPackage ../development/libraries/drumstick { };
-
   ecl = callPackage ../development/compilers/ecl { };
   ecl_16_1_2 = callPackage ../development/compilers/ecl/16.1.2.nix { };
 
@@ -13335,7 +13331,7 @@ in
     let
       mkFrameworks = import ../development/libraries/kde-frameworks;
       attrs = {
-        libsForQt5 = libsForQt514;
+        inherit libsForQt5;
         inherit lib fetchurl;
       };
     in
@@ -13350,8 +13346,6 @@ in
     automake = automake111x;
   };
 
-  kf5gpgmepp = libsForQt5.callPackage ../development/libraries/kf5gpgmepp { };
-
   krb5 = callPackage ../development/libraries/kerberos/krb5.nix {
     inherit (buildPackages.darwin) bootstrap_cmds;
   };
@@ -15151,8 +15145,6 @@ in
       inherit llvmPackages_5;
     });
 
-  libsForQt512 = recurseIntoAttrs (lib.makeScope qt512.newScope mkLibsForQt5);
-
   qt514 = recurseIntoAttrs (makeOverridable
     (import ../development/libraries/qt-5/5.14) {
       inherit newScope;
@@ -15183,6 +15175,8 @@ in
       inherit llvmPackages_5;
     });
 
+  libsForQt512 = recurseIntoAttrs (lib.makeScope qt512.newScope mkLibsForQt5);
+
   libsForQt514 = recurseIntoAttrs (lib.makeScope qt514.newScope mkLibsForQt5);
 
   libsForQt515 = recurseIntoAttrs (lib.makeScope qt515.newScope mkLibsForQt5);
@@ -15209,17 +15203,41 @@ in
       kwidgetsaddons kwindowsystem kxmlgui kxmlrpcclient modemmanager-qt
       networkmanager-qt plasma-framework prison qqc2-desktop-style solid sonnet
       syntax-highlighting syndication threadweaver kirigami2 kholidays kpurpose
-      kcontacts kquickcharts kdoctools kapidox;
+      kcontacts kquickcharts kdoctools kapidox kdesu kinit kded frameworkintegration
+      kdewebkit breeze-icons
+    ;
 
     ### KDE PLASMA 5
 
     inherit (plasma5.override { libsForQt5 = self; })
-      kdecoration khotkeys libkscreen libksysguard;
+      kdecoration khotkeys libkscreen libksysguard bluedevil
+      breeze-gtk breeze-qt5 breeze-grub breeze-plymouth discover kactivitymanagerd
+      kde-cli-tools kde-gtk-config kdeplasma-addons kgamma5 kinfocenter kmenuedit
+      kscreen kscreenlocker ksshaskpass ksysguard kwallet-pam kwayland-integration
+      kwin kwrited milou oxygen plasma-browser-integration plasma-desktop
+      plasma-integration plasma-nm plasma-pa plasma-vault plasma-workspace
+      plasma-workspace-wallpapers polkit-kde-agent powerdevil sddm-kcm
+      systemsettings user-manager xdg-desktop-portal-kde
+    ;
+
+    inherit ((plasma5.override { libsForQt5 = self; }).thirdParty)
+      plasma-applet-caffeine-plus kwin-dynamic-workspaces kwin-tiling krohnkite
+    ;
 
     ### KDE APPLICATIONS
 
     inherit (kdeApplications.override { libsForQt5 = self; })
-      libkdcraw libkexiv2 libkipi libkomparediff2 libksane;
+      libkdcraw libkexiv2 libkipi libkomparediff2 libksane libkcddb akonadi-contacts
+      akonadi-calendar akonadi-notes akonadi-search kidentitymanagement kontactinterface
+      kldap akonadi akregator ark bomber bovo dolphin dragon elisa ffmpegthumbs filelight
+      granatier gwenview k3b kaddressbook kalzium kapptemplate kapman kate katomic
+      kblackbox kblocks kbounce kcachegrind kcalc kcharselect kcolorchooser
+      kdenlive kdf kdialog kdiamond keditbookmarks kfind kfloppy kget kgpg khelpcenter
+      kig kigo killbots kitinerary kleopatra klettres klines kmag kmail kmines kmix kmplot
+      knavalbattle knetwalk knights kollision kolourpaint kompare konsole kontact korganizer
+      kpkpass krdc kreversi krfb kshisen ksquares ksystemlog kteatime ktimer ktouch kturtle
+      kwalletmanager kwave marble minuet okular picmi spectacle yakuake
+    ;
 
     ### LIBRARIES
 
@@ -15231,6 +15249,8 @@ in
 
     dxflib = callPackage ../development/libraries/dxflib {};
 
+    drumstick = callPackage ../development/libraries/drumstick { };
+
     fcitx-qt5 = callPackage ../tools/inputmethods/fcitx/fcitx-qt5.nix { };
 
     qgpgme = callPackage ../development/libraries/gpgme { };
@@ -15243,6 +15263,8 @@ in
 
     kdsoap = callPackage ../development/libraries/kdsoap { };
 
+    kf5gpgmepp = callPackage ../development/libraries/kf5gpgmepp { };
+
     kproperty = callPackage ../development/libraries/kproperty { };
 
     kpeoplevcard = callPackage ../development/libraries/kpeoplevcard { };
@@ -15263,6 +15285,8 @@ in
 
     libopenshot = callPackage ../applications/video/openshot-qt/libopenshot.nix { };
 
+    packagekit-qt = callPackage ../tools/package-management/packagekit/qt.nix { };
+
     libopenshot-audio = callPackage ../applications/video/openshot-qt/libopenshot-audio.nix { };
 
     libqglviewer = callPackage ../development/libraries/libqglviewer {
@@ -15333,6 +15357,9 @@ in
 
     qtwebkit-plugins = callPackage ../development/libraries/qtwebkit-plugins { };
 
+    # Not a library, but we do want it to be built for every qt version there
+    # is, to allow users to choose the right build if needed.
+    sddm = callPackage ../applications/display-managers/sddm { };
   };
 
   qtEnv = qt5.env;
@@ -17615,6 +17642,8 @@ in
 
   crda = callPackage ../os-specific/linux/crda { };
 
+  cshatag = callPackage ../os-specific/linux/cshatag { };
+
   # Darwin package set
   #
   # Even though this is a set of packages not single package, use `callPackage`
@@ -18999,8 +19028,6 @@ in
 
   brise = callPackage ../data/misc/brise { };
 
-  inherit (kdeFrameworks) breeze-icons;
-
   cacert = callPackage ../data/misc/cacert { };
 
   caladea = callPackage ../data/fonts/caladea {};
@@ -19166,7 +19193,9 @@ in
 
   fira-mono = callPackage ../data/fonts/fira-mono { };
 
-  flat-remix-icon-theme = callPackage ../data/icons/flat-remix-icon-theme { };
+  flat-remix-icon-theme = callPackage ../data/icons/flat-remix-icon-theme {
+    inherit (kdeFrameworks) breeze-icons;
+  };
 
   font-awesome_4 = (callPackage ../data/fonts/font-awesome-5 { }).v4;
   font-awesome_5 = (callPackage ../data/fonts/font-awesome-5 { }).v5;
@@ -19325,9 +19354,11 @@ in
 
   luculent = callPackage ../data/fonts/luculent { };
 
-  luna-icons = callPackage ../data/icons/luna-icons { };
+  luna-icons = callPackage ../data/icons/luna-icons {
+    inherit (kdeFrameworks) breeze-icons;
+  };
 
-  maia-icon-theme = callPackage ../data/icons/maia-icon-theme { };
+  maia-icon-theme = libsForQt5.callPackage ../data/icons/maia-icon-theme { };
 
   mailcap = callPackage ../data/misc/mailcap { };
 
@@ -19446,15 +19477,17 @@ in
 
   oxygenfonts = callPackage ../data/fonts/oxygenfonts { };
 
-  inherit (kdeFrameworks) oxygen-icons5;
-
   paper-gtk-theme = callPackage ../data/themes/paper-gtk { };
 
   paper-icon-theme = callPackage ../data/icons/paper-icon-theme { };
 
-  papirus-icon-theme = callPackage ../data/icons/papirus-icon-theme { };
+  papirus-icon-theme = callPackage ../data/icons/papirus-icon-theme {
+    inherit (kdeFrameworks) breeze-icons;
+  };
 
-  papirus-maia-icon-theme = callPackage ../data/icons/papirus-maia-icon-theme { };
+  papirus-maia-icon-theme = callPackage ../data/icons/papirus-maia-icon-theme {
+    inherit (kdeFrameworks) breeze-icons;
+  };
 
   papis = with python3Packages; toPythonApplication papis;
 
@@ -19484,7 +19517,9 @@ in
 
   pop-gtk-theme = callPackage ../data/themes/pop-gtk { };
 
-  pop-icon-theme = callPackage ../data/icons/pop-icon-theme { };
+  pop-icon-theme = callPackage ../data/icons/pop-icon-theme {
+    inherit (kdeFrameworks) breeze-icons;
+  };
 
   posix_man_pages = callPackage ../data/documentation/man-pages-posix { };
 
@@ -19764,7 +19799,9 @@ in
 
   yaru-theme = callPackage ../data/themes/yaru {};
 
-  zafiro-icons = callPackage ../data/icons/zafiro-icons { };
+  zafiro-icons = callPackage ../data/icons/zafiro-icons {
+    inherit (kdeFrameworks) breeze-icons;
+  };
 
   zeal = libsForQt514.callPackage ../data/documentation/zeal { };
 
@@ -20145,9 +20182,12 @@ in
   calibre = calibre-py3;
 
   calligra = libsForQt514.callPackage ../applications/office/calligra {
-    inherit (kdeApplications) akonadi-calendar akonadi-contacts;
     openjpeg = openjpeg_1;
-    poppler = poppler_0_61;
+    poppler = poppler_0_61.override {
+      qt5Support = true;
+      # Must be using the same qt version as calligra itself.
+      qtbase = qt514.qtbase;
+    };
   };
 
   perkeep = callPackage ../applications/misc/perkeep { };
@@ -21722,51 +21762,17 @@ in
     let
       mkApplications = import ../applications/kde;
       attrs = {
-        libsForQt5 = libsForQt514;
+        inherit libsForQt5;
         inherit lib fetchurl;
         inherit okteta;
       };
     in
       recurseIntoAttrs (makeOverridable mkApplications attrs);
 
-  inherit (kdeApplications)
-    akonadi akregator ark
-    bomber bovo
-    dolphin dragon
-    elisa
-    ffmpegthumbs filelight
-    granatier gwenview
-    k3b
-    kaddressbook kalzium kapptemplate kapman kate katomic
-    kblackbox kblocks kbounce
-    kcachegrind kcalc kcharselect kcolorchooser
-    kdeconnect-kde kdenlive kdf kdialog kdiamond
-    keditbookmarks
-    kfind kfloppy
-    kget kgpg
-    khelpcenter
-    kig kigo killbots kitinerary
-    kleopatra klettres klines
-    kmag kmail kmines kmix kmplot
-    knavalbattle knetwalk knights
-    kollision kolourpaint kompare konsole kontact korganizer
-    kpkpass
-    krdc kreversi krfb
-    kshisen ksquares ksystemlog
-    kteatime ktimer ktouch kturtle
-    kwalletmanager kwave
-    marble minuet
-    okular
-    picmi
-    spectacle
-    yakuake;
-
   okteta = libsForQt5.callPackage ../applications/editors/okteta { };
 
   k4dirstat = libsForQt5.callPackage ../applications/misc/k4dirstat { };
 
-  inherit (kdeFrameworks) kdesu;
-
   kdevelop-pg-qt = libsForQt514.callPackage ../applications/editors/kdevelop5/kdevelop-pg-qt.nix { };
 
   kdevelop-unwrapped = libsForQt514.callPackage ../applications/editors/kdevelop5/kdevelop.nix {
@@ -21804,7 +21810,7 @@ in
 
   kid3 = libsForQt5.callPackage ../applications/audio/kid3 { };
 
-  kile = libsForQt514.callPackage ../applications/editors/kile { };
+  kile = libsForQt5.callPackage ../applications/editors/kile { };
 
   kino = callPackage ../applications/video/kino {
     inherit (gnome2) libglade;
@@ -21819,10 +21825,7 @@ in
 
   kmplayer = libsForQt5.callPackage ../applications/video/kmplayer { };
 
-  kmymoney = libsForQt5.callPackage ../applications/office/kmymoney {
-    inherit (kdeApplications) kidentitymanagement;
-    inherit (kdeFrameworks) kdewebkit;
-  };
+  kmymoney = libsForQt5.callPackage ../applications/office/kmymoney { };
 
   kodestudio = callPackage ../applications/editors/kodestudio { };
 
@@ -23517,8 +23520,6 @@ in
 
   robustirc-bridge = callPackage ../servers/irc/robustirc-bridge { };
 
-  sddm = libsForQt514.callPackage ../applications/display-managers/sddm { };
-
   skrooge = libsForQt514.callPackage ../applications/office/skrooge {};
 
   smartgithg = callPackage ../applications/version-management/smartgithg {
@@ -23899,9 +23900,7 @@ in
 
   tribler = callPackage ../applications/networking/p2p/tribler { };
 
-  trojita = libsForQt514.callPackage ../applications/networking/mailreaders/trojita {
-    inherit (kdeApplications) akonadi-contacts;
-  };
+  trojita = libsForQt514.callPackage ../applications/networking/mailreaders/trojita { };
 
   tudu = callPackage ../applications/office/tudu { };
 
@@ -24718,8 +24717,6 @@ in
   zam-plugins = callPackage ../applications/audio/zam-plugins { };
 
   zanshin = libsForQt514.callPackage ../applications/office/zanshin {
-    inherit (kdeApplications) akonadi-calendar akonadi-notes akonadi-search kidentitymanagement kontactinterface kldap;
-    inherit (kdeFrameworks) krunner kwallet kcalendarcore;
     boost = boost160;
   };
 
@@ -25061,9 +25058,6 @@ in
   dhewm3 = callPackage ../games/dhewm3 {};
 
   digikam = libsForQt514.callPackage ../applications/graphics/digikam {
-    inherit (plasma5) oxygen;
-    inherit (kdeApplications) akonadi-contacts;
-    inherit (kdeFrameworks) kcalendarcore;
     opencv3 = opencv3WithoutCuda;
   };
 
@@ -25941,6 +25935,8 @@ in
   lumina = recurseIntoAttrs (callPackage ../desktops/lumina { });
 
   lxqt = recurseIntoAttrs (import ../desktops/lxqt {
+    # TODO: Update these to qt515 at some point. When doing it, please remove
+    # the choice of libsForQt5*.sddm in sddm's module.
     qt5 = qt514;
     libsForQt5 = libsForQt514;
     inherit pkgs;
@@ -25979,7 +25975,7 @@ in
     let
       mkPlasma5 = import ../desktops/plasma-5;
       attrs = {
-        libsForQt5 = libsForQt514;
+        inherit libsForQt5;
         inherit lib fetchurl;
         gconf = gnome2.GConf;
         inherit gsettings-desktop-schemas;
@@ -25987,25 +25983,6 @@ in
     in
       recurseIntoAttrs (makeOverridable mkPlasma5 attrs);
 
-  inherit (kdeFrameworks) kded kinit frameworkintegration;
-
-  inherit (plasma5)
-    bluedevil breeze-gtk breeze-qt5 breeze-grub breeze-plymouth discover
-    kactivitymanagerd kde-cli-tools kde-gtk-config kdeplasma-addons kgamma5
-    kinfocenter kmenuedit kscreen kscreenlocker ksshaskpass ksysguard
-    kwallet-pam kwayland-integration kwin kwrited milou oxygen plasma-browser-integration
-    plasma-desktop plasma-integration plasma-nm plasma-pa plasma-vault plasma-workspace
-    plasma-workspace-wallpapers polkit-kde-agent powerdevil sddm-kcm
-    systemsettings user-manager xdg-desktop-portal-kde;
-
-  inherit (plasma5.thirdParty)
-    plasma-applet-caffeine-plus
-    kwin-dynamic-workspaces
-    kwin-tiling
-    krohnkite;
-
-  ### SCIENCE
-
   ### SCIENCE/CHEMISTY
 
   avogadro = callPackage ../applications/science/chemistry/avogadro {