diff --git a/pkgs/development/libraries/qt-5/5.15/default.nix b/pkgs/development/libraries/qt-5/5.15/default.nix
index e6e6b24360a42..8a859af37e9d5 100644
--- a/pkgs/development/libraries/qt-5/5.15/default.nix
+++ b/pkgs/development/libraries/qt-5/5.15/default.nix
@@ -12,7 +12,6 @@ Check for any minor version changes.
 , bison, cups ? null, harfbuzz, libGL, perl, python3
 , gstreamer, gst-plugins-base, gtk3, dconf
 , darwin
-, buildPackages
 
   # options
 , developerBuild ? false
@@ -202,32 +201,24 @@ let
     qttools = [ ./qttools.patch ];
   };
 
-  addPackages = self: with self;
+  addPackages = self:
     let
-      qtModule =
-        import ../qtModule.nix
-        {
-          inherit perl;
-          inherit lib;
-          # Use a variant of mkDerivation that does not include wrapQtApplications
-          # to avoid cyclic dependencies between Qt modules.
-          mkDerivation =
-            import ../mkDerivation.nix
-            { inherit lib; inherit debug; wrapQtAppsHook = null; }
-            stdenv.mkDerivation;
-        }
-        { inherit self srcs patches; };
+      qtModule = callPackage ../qtModule.nix {
+        inherit patches;
+        # Use a variant of mkDerivation that does not include wrapQtApplications
+        # to avoid cyclic dependencies between Qt modules.
+        mkDerivation =
+          (callPackage ../mkDerivation.nix { wrapQtAppsHook = null; }) stdenv.mkDerivation;
+      };
 
       callPackage = self.newScope { inherit qtCompatVersion qtModule srcs stdenv; };
     in {
 
       inherit callPackage qtCompatVersion qtModule srcs;
 
-      mkDerivationWith =
-        import ../mkDerivation.nix
-        { inherit lib; inherit debug; inherit (self) wrapQtAppsHook; };
+      mkDerivationWith = callPackage ../mkDerivation.nix { };
 
-      mkDerivation = mkDerivationWith stdenv.mkDerivation;
+      mkDerivation = callPackage ({ mkDerivationWith }: mkDerivationWith stdenv.mkDerivation) { };
 
       qtbase = callPackage ../modules/qtbase.nix {
         inherit (srcs.qtbase) src version;
@@ -309,7 +300,9 @@ let
       qtxmlpatterns = callPackage ../modules/qtxmlpatterns.nix {};
 
       env = callPackage ../qt-env.nix {};
-      full = env "qt-full-${qtbase.version}" ([
+      full = callPackage ({ env, qtbase }: env "qt-full-${qtbase.version}") { }
+      # `with self` is ok to use here because having these spliced is unnecessary
+      (with self; [
         qt3d qtcharts qtconnectivity qtdeclarative qtdoc qtgraphicaleffects
         qtimageformats qtlocation qtmultimedia qtquickcontrols qtquickcontrols2
         qtscript qtsensors qtserialport qtsvg qttools qttranslations
@@ -318,20 +311,20 @@ let
       ] ++ lib.optional (!stdenv.isDarwin) qtwayland
         ++ lib.optional (stdenv.isDarwin) qtmacextras);
 
-      qmake = makeSetupHook {
+      qmake = callPackage ({ qtbase }: makeSetupHook {
         name = "qmake-hook";
-        propagatedBuildInputs = [ self.qtbase.dev ];
+        propagatedBuildInputs = [ qtbase.dev ];
         substitutions = {
           inherit debug;
           fix_qmake_libtool = ../hooks/fix-qmake-libtool.sh;
         };
-      } ../hooks/qmake-hook.sh;
+      } ../hooks/qmake-hook.sh) { };
 
-      wrapQtAppsHook = makeSetupHook {
+      wrapQtAppsHook = callPackage ({ makeBinaryWrapper, qtbase, qtwayland }: makeSetupHook {
         name = "wrap-qt5-apps-hook";
-        propagatedBuildInputs = [ self.qtbase.dev buildPackages.makeBinaryWrapper ]
-          ++ lib.optional stdenv.isLinux self.qtwayland.dev;
-      } ../hooks/wrap-qt-apps-hook.sh;
+        propagatedBuildInputs = [ qtbase.dev makeBinaryWrapper ]
+          ++ lib.optional stdenv.isLinux qtwayland.dev;
+      } ../hooks/wrap-qt-apps-hook.sh) { };
     };
 
   baseScope = makeScopeWithSplicing' {
diff --git a/pkgs/development/libraries/qt-5/mkDerivation.nix b/pkgs/development/libraries/qt-5/mkDerivation.nix
index 98f9a05fac7c4..a90e229e688d0 100644
--- a/pkgs/development/libraries/qt-5/mkDerivation.nix
+++ b/pkgs/development/libraries/qt-5/mkDerivation.nix
@@ -1,6 +1,4 @@
-{ lib, debug, wrapQtAppsHook }:
-
-let inherit (lib) optional; in
+{ wrapQtAppsHook }:
 
 mkDerivation:
 
diff --git a/pkgs/development/libraries/qt-5/qtModule.nix b/pkgs/development/libraries/qt-5/qtModule.nix
index 7322ed51e83e6..7d73e652b6ffb 100644
--- a/pkgs/development/libraries/qt-5/qtModule.nix
+++ b/pkgs/development/libraries/qt-5/qtModule.nix
@@ -1,9 +1,7 @@
-{ lib, mkDerivation, perl }:
+{ lib, mkDerivation, perl, qmake, patches, srcs }:
 
 let inherit (lib) licenses maintainers platforms; in
 
-{ self, srcs, patches }:
-
 args:
 
 let
@@ -16,7 +14,7 @@ mkDerivation (args // {
   inherit pname version src;
   patches = (args.patches or []) ++ (patches.${pname} or []);
 
-  nativeBuildInputs = (args.nativeBuildInputs or []) ++ [ perl self.qmake ];
+  nativeBuildInputs = (args.nativeBuildInputs or []) ++ [ perl qmake ];
   propagatedBuildInputs =
     (lib.warnIf (args ? qtInputs) "qt5.qtModule's qtInputs argument is deprecated" args.qtInputs or []) ++
     (args.propagatedBuildInputs or []);
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5b1a53d779445..fd64cbcfe970c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -24670,7 +24670,7 @@ with pkgs;
       inherit (__splicedPackages)
         makeScopeWithSplicing' generateSplicesForMkScope lib fetchurl fetchpatch fetchgit fetchFromGitHub makeSetupHook makeWrapper
         bison cups dconf harfbuzz libGL perl gtk3 python3
-        darwin buildPackages;
+        darwin;
       inherit (__splicedPackages.gst_all_1) gstreamer gst-plugins-base;
       inherit config;
       stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;