diff --git a/pkgs/development/libraries/polkit-qt-1/old.nix b/pkgs/development/libraries/polkit-qt-1/old.nix
deleted file mode 100644
index b887134e5b93..000000000000
--- a/pkgs/development/libraries/polkit-qt-1/old.nix
+++ /dev/null
@@ -1,22 +0,0 @@
-{ stdenv, fetchurl, cmake, pkgconfig, polkit, automoc4, glib
-, qt4 ? null, qt5 ? null, withQt5 ? false }:
-
-assert (withQt5 -> qt5 != null); assert (!withQt5 -> qt4 != null);
-
-stdenv.mkDerivation {
-  name = "polkit-qt-1-0.112.0";
-
-  src = fetchurl {
-    url = "mirror://kde/stable/apps/KDE4.x/admin/polkit-qt-1-0.112.0.tar.bz2";
-    sha256 = "1ip78x20hjqvm08kxhp6gb8hf6k5n6sxyx6kk2yvvq53djzh7yv7";
-  };
-
-  nativeBuildInputs = [ cmake automoc4 pkgconfig ];
-
-  propagatedBuildInputs = [ polkit glib ] ++ (if withQt5 then [qt5.base] else [qt4]);
-
-  meta = {
-    description = "A Qt wrapper around PolKit";
-    maintainers = with stdenv.lib.maintainers; [ ttuegel ];
-  };
-}
diff --git a/pkgs/tools/misc/calamares/default.nix b/pkgs/tools/misc/calamares/default.nix
index e2b8c70c6e27..6ca007229bcd 100644
--- a/pkgs/tools/misc/calamares/default.nix
+++ b/pkgs/tools/misc/calamares/default.nix
@@ -1,6 +1,6 @@
-{ stdenv, fetchgit, cmake, qt5, polkit_qt5, libyamlcpp, python, boost, parted
+{ stdenv, fetchgit, cmake, polkitQt, libyamlcpp, python, boost, parted
 , extra-cmake-modules, kconfig, ki18n, kcoreaddons, solid, utillinux, libatasmart
-, ckbcomp, glibc, tzdata, xkeyboard_config }:
+, ckbcomp, glibc, tzdata, xkeyboard_config, qtbase, qtquick1, qtsvg, qttools }:
 
 stdenv.mkDerivation rec {
   name = "calamares-${version}";
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [
-    cmake qt5.base qt5.tools libyamlcpp python boost polkit_qt5 parted
+    cmake qtbase qtquick1 qtsvg qttools libyamlcpp python boost polkitQt parted
     extra-cmake-modules kconfig ki18n kcoreaddons solid utillinux libatasmart
   ];
 
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
   '';
 
   preInstall = ''
-    substituteInPlace cmake_install.cmake --replace "${polkit_qt5}" "$out"
+    substituteInPlace cmake_install.cmake --replace "${polkitQt}" "$out"
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ac1e29d13f6e..1877617f0165 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1732,13 +1732,6 @@ let
     ghostscript = null;
   };
 
-  calamares = callPackage ../tools/misc/calamares rec {
-    python = python3;
-    boost = pkgs.boost.override { python=python3; };
-    libyamlcpp = callPackage ../development/libraries/libyaml-cpp { makePIC=true; boost=boost; };
-    inherit (kf5_stable) extra-cmake-modules kconfig ki18n kcoreaddons solid;
-  };
-
   grub = callPackage_i686 ../tools/misc/grub {
     buggyBiosCDSupport = config.grub.buggyBiosCDSupport or true;
     automake = automake112x; # fails with 13 and 14
@@ -6860,10 +6853,6 @@ let
     automake = automake111x;
   };
 
-  kf517 = import ../development/libraries/kde-frameworks-5.17 { inherit pkgs; };
-  kf5_stable = kf517;
-  kf5_latest = kf517;
-
   kinetic-cpp-client = callPackage ../development/libraries/kinetic-cpp-client { };
 
   krb5Full = callPackage ../development/libraries/kerberos/krb5.nix {
@@ -8070,8 +8059,6 @@ let
 
   polkit_qt4 = callPackage ../development/libraries/polkit-qt-1 { };
 
-  polkit_qt5 = callPackage ../development/libraries/polkit-qt-1/old.nix { withQt5 = true; };
-
   policykit = callPackage ../development/libraries/policykit { };
 
   poppler = callPackage ../development/libraries/poppler { lcms = lcms2; };
@@ -12221,10 +12208,6 @@ let
     boost = boost155;
   };
 
-  kdeApps_15_12 = import ../applications/kde-apps-15.12 { inherit pkgs; };
-  kdeApps_stable = kdeApps_15_12;
-  kdeApps_latest = kdeApps_15_12;
-
   keepnote = callPackage ../applications/office/keepnote {
     pygtk = pyGtkGlade;
   };
@@ -14724,12 +14707,14 @@ let
 
   numix-gtk-theme = callPackage ../misc/themes/gtk3/numix-gtk-theme { };
 
-  plasma55 = import ../desktops/plasma-5.5 { inherit pkgs; };
-  plasma5_stable = plasma55;
-  plasma5_latest = plasma55;
-
   kde5PackagesFun = self: with self; {
 
+    calamares = callPackage ../tools/misc/calamares rec {
+      python = python3;
+      boost = pkgs.boost.override { python=python3; };
+      libyamlcpp = callPackage ../development/libraries/libyaml-cpp { makePIC=true; boost=boost; };
+    };
+
     fcitx-qt5 = callPackage ../tools/inputmethods/fcitx/fcitx-qt5.nix { };
 
     k9copy = callPackage ../applications/video/k9copy {};
@@ -14769,14 +14754,22 @@ let
   };
 
   kde5 =
-    recurseIntoAttrs
-    (lib.makeScope qt55Libs.newScope (self:
-      kf5_stable self // plasma5_stable self // kdeApps_stable self // kde5PackagesFun self));
+    let
+      frameworks = import ../development/libraries/kde-frameworks-5.17 { inherit pkgs; };
+      plasma = import ../desktops/plasma-5.5 { inherit pkgs; };
+      apps = import ../applications/kde-apps-15.12 { inherit pkgs; };
+      merged = self: frameworks self // plasma self // apps self // kde5PackagesFun self;
+    in
+      recurseIntoAttrs (lib.makeScope qt55Libs.newScope merged);
 
   kde5_latest =
-    recurseIntoAttrs
-    (lib.makeScope qt55Libs.newScope (self:
-      kf5_latest self // plasma5_latest self // kdeApps_latest self // kde5PackagesFun self));
+    let
+      frameworks = import ../development/libraries/kde-frameworks-5.17 { inherit pkgs; };
+      plasma = import ../desktops/plasma-5.5 { inherit pkgs; };
+      apps = import ../applications/kde-apps-15.12 { inherit pkgs; };
+      merged = self: frameworks self // plasma self // apps self // kde5PackagesFun self;
+    in
+      recurseIntoAttrs (lib.makeScope qt55Libs.newScope merged);
 
   theme-vertex = callPackage ../misc/themes/vertex { };