diff --git a/pkgs/applications/graphics/digikam/default.nix b/pkgs/applications/graphics/digikam/default.nix
index 63b8d7b3f6091..b2a0396560178 100644
--- a/pkgs/applications/graphics/digikam/default.nix
+++ b/pkgs/applications/graphics/digikam/default.nix
@@ -1,4 +1,4 @@
-{ mkDerivation, lib, fetchFromGitHub, cmake, doxygen, extra-cmake-modules, wrapGAppsHook
+{ mkDerivation, lib, fetchurl, cmake, doxygen, extra-cmake-modules, wrapGAppsHook
 
 # For `digitaglinktree`
 , perl, sqlite
@@ -33,7 +33,6 @@
 , libkipi
 , libksane
 , liblqr1
-, libqtav
 , libusb1
 , marble
 , libGL
@@ -52,13 +51,11 @@
 
 mkDerivation rec {
   pname   = "digikam";
-  version = "6.2.0";
+  version = "6.4.0";
 
-  src = fetchFromGitHub {
-    owner  = "KDE";
-    repo   = "digikam";
-    rev    = "v${version}";
-    sha256 = "1l1nb1nwicmip2jxhn5gzr7h60igvns0zs3kzp36r6qf4wvg3v2z";
+  src = fetchurl {
+    url = "https://download.kde.org/stable/${pname}/${version}/${pname}-${version}.tar.xz";
+    sha256 = "0vwd97zkxv30y8x0z76s4fsj4w9ysgsmpjclp2h2bpava7zi4l3p";
   };
 
   nativeBuildInputs = [ cmake doxygen extra-cmake-modules kdoctools wrapGAppsHook ];
@@ -76,7 +73,6 @@ mkDerivation rec {
     libkipi
     libksane
     liblqr1
-    libqtav
     libusb1
     libGL
     libGLU
diff --git a/pkgs/applications/networking/browsers/falkon/default.nix b/pkgs/applications/networking/browsers/falkon/default.nix
index f9e814a0941b8..3c2aace79b267 100644
--- a/pkgs/applications/networking/browsers/falkon/default.nix
+++ b/pkgs/applications/networking/browsers/falkon/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, mkDerivation, lib, fetchFromGitHub
+{ stdenv, mkDerivation, lib, fetchFromGitHub, fetchpatch
 , cmake, extra-cmake-modules, pkgconfig, qmake
 , libpthreadstubs, libxcb, libXdmcp
 , qtsvg, qttools, qtwebengine, qtx11extras
@@ -17,6 +17,14 @@ mkDerivation rec {
     sha256 = "1w64slh9wpcfi4v7ds9wci1zvwh0dh787ndpi6hd4kmdgnswvsw7";
   };
 
+  patches = [
+    # fixes build with qt5 5.14
+    (fetchpatch {
+      url = "https://github.com/KDE/falkon/commit/bbde5c6955c43bc744ed2c4024598495de908f2a.diff";
+      sha256 = "0f7qcddvvdnij3di0acg7jwvwfwyd0xizlav4wccclbj8x7qp5ld";
+    })
+  ];
+
   preConfigure = ''
     export NONBLOCK_JS_DIALOGS=true
     export KDE_INTEGRATION=true
diff --git a/pkgs/applications/networking/instant-messengers/chatterino2/default.nix b/pkgs/applications/networking/instant-messengers/chatterino2/default.nix
index 553b466b12f9c..8fd0128ef2ca3 100644
--- a/pkgs/applications/networking/instant-messengers/chatterino2/default.nix
+++ b/pkgs/applications/networking/instant-messengers/chatterino2/default.nix
@@ -2,12 +2,12 @@
 
 mkDerivation rec {
   pname = "chatterino2";
-  version = "unstable-2019-05-11";
+  version = "2.1.7";
   src = fetchFromGitHub {
     owner = "fourtf";
     repo = pname;
-    rev = "8c46cbf571dc8fd77287bf3186445ff52b1d1aaf";
-    sha256 = "0i2385hamhd9i7jdy906cfrd81cybw524j92l87c8pzrkxphignk";
+    rev = "v${version}";
+    sha256 = "0bbdzainfa7hlz5p0jfq4y04i3wix7z3i6w193906bi4gr9wilpg";
     fetchSubmodules = true;
   };
   nativeBuildInputs = [ qmake pkgconfig wrapQtAppsHook ];
diff --git a/pkgs/applications/networking/irc/quassel/0001-common-Disable-enum-type-stream-operators-for-Qt-5.1.patch b/pkgs/applications/networking/irc/quassel/0001-common-Disable-enum-type-stream-operators-for-Qt-5.1.patch
new file mode 100644
index 0000000000000..6c40dc8dd8954
--- /dev/null
+++ b/pkgs/applications/networking/irc/quassel/0001-common-Disable-enum-type-stream-operators-for-Qt-5.1.patch
@@ -0,0 +1,37 @@
+From ac9387271b2420a71f7d172f44354fc35adac504 Mon Sep 17 00:00:00 2001
+From: Manuel Nickschas <sputnick@quassel-irc.org>
+Date: Tue, 7 Jan 2020 18:34:54 +0100
+Subject: [PATCH] common: Disable enum type stream operators for Qt >= 5.14
+
+Starting from version 5.14, Qt provides stream operators for enum
+types, which collide with the ones we ship in types.h. Disable
+Quassel's stream operators when compiling against Qt 5.14 or later.
+
+(cherry-picked from 579e559a6322209df7cd51c34801fecff5fe734b)
+---
+ src/common/types.h | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/common/types.h b/src/common/types.h
+index 467d9fb2..c4b9f364 100644
+--- a/src/common/types.h
++++ b/src/common/types.h
+@@ -140,6 +140,7 @@ Q_DECLARE_METATYPE(QHostAddress)
+ typedef QList<MsgId> MsgIdList;
+ typedef QList<BufferId> BufferIdList;
+ 
++#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
+ /**
+  * Catch-all stream serialization operator for enum types.
+  *
+@@ -169,6 +170,7 @@ QDataStream &operator>>(QDataStream &in, T &value) {
+     value = static_cast<T>(v);
+     return in;
+ }
++#endif
+ 
+ // Exceptions
+ 
+-- 
+2.26.2
+
diff --git a/pkgs/applications/networking/irc/quassel/default.nix b/pkgs/applications/networking/irc/quassel/default.nix
index 86f7793819b0a..76743621fc74c 100644
--- a/pkgs/applications/networking/irc/quassel/default.nix
+++ b/pkgs/applications/networking/irc/quassel/default.nix
@@ -43,6 +43,12 @@ in (if !buildClient then stdenv.mkDerivation else mkDerivation) rec {
     sha256 = "0z8p7iv90yrrjbh31cyxhpr6hsynfmi23rlayn7p2f6ki5az7yc3";
   };
 
+  patches = [
+    # fixes build with Qt 5.14
+    # source: https://github.com/quassel/quassel/pull/518/commits/8a46d983fc99204711cdff1e4c542e272fef45b9
+    ./0001-common-Disable-enum-type-stream-operators-for-Qt-5.1.patch
+  ];
+
   enableParallelBuilding = true;
 
   # Prevent ``undefined reference to `qt_version_tag''' in SSL check
diff --git a/pkgs/development/libraries/exiv2/default.nix b/pkgs/development/libraries/exiv2/default.nix
index 8a6dfd1983ef4..02d3f1da3e698 100644
--- a/pkgs/development/libraries/exiv2/default.nix
+++ b/pkgs/development/libraries/exiv2/default.nix
@@ -98,7 +98,7 @@ stdenv.mkDerivation rec {
     (cd ../tests/ && python3 runner.py)
   '';
 
-  # With cmake we have to enable samples or there won't be
+  # With CMake we have to enable samples or there won't be
   # a tests target. This removes them.
   postInstall = ''
     ( cd "$out/bin"
@@ -108,6 +108,14 @@ stdenv.mkDerivation rec {
     )
   '';
 
+  # Fix CMake export paths.
+  postFixup = ''
+    sed -i "$dev/lib/cmake/exiv2/exiv2Config.cmake" \
+        -e "/INTERFACE_INCLUDE_DIRECTORIES/ s@\''${_IMPORT_PREFIX}@$dev@" \
+        -e "/Compute the installation prefix/ a set(_IMPORT_PREFIX \"$out\")" \
+        -e "/^get_filename_component(_IMPORT_PREFIX/ d"
+  '';
+
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
diff --git a/pkgs/development/libraries/libqtav/default.nix b/pkgs/development/libraries/libqtav/default.nix
index 00a87402fa3f8..43489e8e85098 100644
--- a/pkgs/development/libraries/libqtav/default.nix
+++ b/pkgs/development/libraries/libqtav/default.nix
@@ -46,6 +46,6 @@ mkDerivation rec {
     homepage = "http://www.qtav.org/";
     maintainers = [ maintainers.jraygauthier ];
     platforms = platforms.linux;
+    broken = !(lib.versionOlder qtbase.version "5.13");
   };
 }
-
diff --git a/pkgs/development/libraries/qt-5/5.14/default.nix b/pkgs/development/libraries/qt-5/5.14/default.nix
new file mode 100644
index 0000000000000..1a90c610a5b53
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/default.nix
@@ -0,0 +1,176 @@
+/*
+
+# Updates
+
+Before a major version update, make a copy of this directory. (We like to
+keep the old version around for a short time after major updates.) Add a
+top-level attribute to `top-level/all-packages.nix`.
+
+1. Update the URL in `pkgs/development/libraries/qt-5/$VERSION/fetch.sh`.
+2. From the top of the Nixpkgs tree, run
+   `./maintainers/scripts/fetch-kde-qt.sh > pkgs/development/libraries/qt-5/$VERSION/srcs.nix`.
+3. Check that the new packages build correctly.
+4. Commit the changes and open a pull request.
+
+*/
+
+{
+  newScope,
+  stdenv, fetchurl, fetchpatch, fetchFromGitHub, makeSetupHook, makeWrapper,
+  bison, cups ? null, harfbuzz, libGL, perl,
+  gstreamer, gst-plugins-base, gtk3, dconf,
+  llvmPackages_5,
+
+  # options
+  developerBuild ? false,
+  decryptSslTraffic ? false,
+  debug ? false,
+}:
+
+with stdenv.lib;
+
+let
+
+  qtCompatVersion = srcs.qtbase.version;
+
+  stdenvActual = if stdenv.cc.isClang then llvmPackages_5.stdenv else stdenv;
+
+  mirror = "https://download.qt.io";
+  srcs = import ./srcs.nix { inherit fetchurl; inherit mirror; } // {
+    # qtwebkit does not have an official release tarball on the qt mirror and is
+    # mostly maintained by the community.
+    qtwebkit = rec {
+      src = fetchFromGitHub {
+        owner = "qt";
+        repo = "qtwebkit";
+        rev = "v${version}";
+        sha256 = "0x8rng96h19xirn7qkz3lydal6v4vn00bcl0s3brz36dfs0z8wpg";
+      };
+      version = "5.212.0-alpha4";
+    };
+  };
+
+  patches = {
+    qtbase =
+      optionals stdenv.isDarwin [
+        ./qtbase.patch.d/0001-qtbase-mkspecs-mac.patch
+        ./qtbase.patch.d/0002-qtbase-mac.patch
+      ]
+      ++ [
+        ./qtbase.patch.d/0003-qtbase-mkspecs.patch
+        ./qtbase.patch.d/0004-qtbase-replace-libdir.patch
+        ./qtbase.patch.d/0005-qtbase-cmake.patch
+        ./qtbase.patch.d/0006-qtbase-gtk3.patch
+        ./qtbase.patch.d/0007-qtbase-xcursor.patch
+        ./qtbase.patch.d/0008-qtbase-tzdir.patch
+        ./qtbase.patch.d/0009-qtbase-qtpluginpath.patch
+        ./qtbase.patch.d/0010-qtbase-assert.patch
+        ./qtbase.patch.d/0011-fix-header_module.patch
+      ];
+    qtdeclarative = [ ./qtdeclarative.patch ];
+    qtscript = [ ./qtscript.patch ];
+    qtserialport = [ ./qtserialport.patch ];
+    qtwebengine = [ ]
+      ++ optional stdenv.isDarwin ./qtwebengine-darwin-no-platform-check.patch;
+    qtwebkit = [ ./qtwebkit.patch ]
+      ++ optionals stdenv.isDarwin [
+        ./qtwebkit-darwin-no-readline.patch
+        ./qtwebkit-darwin-no-qos-classes.patch
+      ];
+    qttools = [ ./qttools.patch ];
+  };
+
+  qtModule =
+    import ../qtModule.nix
+    {
+      inherit perl;
+      inherit (stdenv) lib;
+      # Use a variant of mkDerivation that does not include wrapQtApplications
+      # to avoid cyclic dependencies between Qt modules.
+      mkDerivation =
+        import ../mkDerivation.nix
+        { inherit (stdenv) lib; inherit debug; wrapQtAppsHook = null; }
+        stdenvActual.mkDerivation;
+    }
+    { inherit self srcs patches; };
+
+  addPackages = self: with self;
+    let
+      callPackage = self.newScope { inherit qtCompatVersion qtModule srcs; };
+    in {
+
+      mkDerivationWith =
+        import ../mkDerivation.nix
+        { inherit (stdenv) lib; inherit debug; inherit (self) wrapQtAppsHook; };
+
+      mkDerivation = mkDerivationWith stdenvActual.mkDerivation;
+
+      qtbase = callPackage ../modules/qtbase.nix {
+        inherit (srcs.qtbase) src version;
+        patches = patches.qtbase;
+        inherit bison cups harfbuzz libGL;
+        withGtk3 = true; inherit dconf gtk3;
+        inherit developerBuild decryptSslTraffic;
+      };
+
+      qtcharts = callPackage ../modules/qtcharts.nix {};
+      qtconnectivity = callPackage ../modules/qtconnectivity.nix {};
+      qtdeclarative = callPackage ../modules/qtdeclarative.nix {};
+      qtdoc = callPackage ../modules/qtdoc.nix {};
+      qtgraphicaleffects = callPackage ../modules/qtgraphicaleffects.nix {};
+      qtimageformats = callPackage ../modules/qtimageformats.nix {};
+      qtlocation = callPackage ../modules/qtlocation.nix {};
+      qtmacextras = callPackage ../modules/qtmacextras.nix {};
+      qtmultimedia = callPackage ../modules/qtmultimedia.nix {
+        inherit gstreamer gst-plugins-base;
+      };
+      qtnetworkauth = callPackage ../modules/qtnetworkauth.nix {};
+      qtquick1 = null;
+      qtquickcontrols = callPackage ../modules/qtquickcontrols.nix {};
+      qtquickcontrols2 = callPackage ../modules/qtquickcontrols2.nix {};
+      qtscript = callPackage ../modules/qtscript.nix {};
+      qtsensors = callPackage ../modules/qtsensors.nix {};
+      qtserialport = callPackage ../modules/qtserialport.nix {};
+      qtspeech = callPackage ../modules/qtspeech.nix {};
+      qtsvg = callPackage ../modules/qtsvg.nix {};
+      qtscxml = callPackage ../modules/qtscxml.nix {};
+      qttools = callPackage ../modules/qttools.nix {};
+      qttranslations = callPackage ../modules/qttranslations.nix {};
+      qtvirtualkeyboard = callPackage ../modules/qtvirtualkeyboard.nix {};
+      qtwayland = callPackage ../modules/qtwayland.nix {};
+      qtwebchannel = callPackage ../modules/qtwebchannel.nix {};
+      qtwebengine = callPackage ../modules/qtwebengine.nix {};
+      qtwebglplugin = callPackage ../modules/qtwebglplugin.nix {};
+      qtwebkit = callPackage ../modules/qtwebkit.nix {};
+      qtwebsockets = callPackage ../modules/qtwebsockets.nix {};
+      qtwebview = callPackage ../modules/qtwebview.nix {};
+      qtx11extras = callPackage ../modules/qtx11extras.nix {};
+      qtxmlpatterns = callPackage ../modules/qtxmlpatterns.nix {};
+
+      env = callPackage ../qt-env.nix {};
+      full = env "qt-full-${qtbase.version}" ([
+        qtcharts qtconnectivity qtdeclarative qtdoc qtgraphicaleffects
+        qtimageformats qtlocation qtmultimedia qtquickcontrols qtquickcontrols2
+        qtscript qtsensors qtserialport qtsvg qttools qttranslations
+        qtvirtualkeyboard qtwebchannel qtwebengine qtwebkit qtwebsockets
+        qtwebview qtx11extras qtxmlpatterns
+      ] ++ optional (!stdenv.isDarwin) qtwayland
+        ++ optional (stdenv.isDarwin) qtmacextras);
+
+      qmake = makeSetupHook {
+        deps = [ self.qtbase.dev ];
+        substitutions = {
+          fix_qmake_libtool = ../hooks/fix-qmake-libtool.sh;
+        };
+      } ../hooks/qmake-hook.sh;
+
+      wrapQtAppsHook = makeSetupHook {
+        deps =
+          [ self.qtbase.dev makeWrapper ]
+          ++ optional stdenv.isLinux self.qtwayland.dev;
+      } ../hooks/wrap-qt-apps-hook.sh;
+    };
+
+   self = makeScope newScope addPackages;
+
+in self
diff --git a/pkgs/development/libraries/qt-5/5.14/fetch.sh b/pkgs/development/libraries/qt-5/5.14/fetch.sh
new file mode 100644
index 0000000000000..2d266b5297767
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/fetch.sh
@@ -0,0 +1 @@
+WGET_ARGS=( http://download.qt.io/official_releases/qt/5.14/5.14.2/submodules/ )
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0001-qtbase-mkspecs-mac.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0001-qtbase-mkspecs-mac.patch
new file mode 100644
index 0000000000000..0951b6646ab7e
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0001-qtbase-mkspecs-mac.patch
@@ -0,0 +1,411 @@
+From a5848991db270ffdd9f2fa05220475bb3194d12f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Milan=20P=C3=A4ssler?= <me@pbb.lc>
+Date: Fri, 3 Apr 2020 21:07:58 +0200
+Subject: [PATCH 01/10] qtbase-mkspecs-mac
+
+---
+ mkspecs/common/mac.conf               |   2 +-
+ mkspecs/features/mac/default_post.prf | 206 --------------------------
+ mkspecs/features/mac/default_pre.prf  |  58 --------
+ mkspecs/features/mac/sdk.mk           |  25 ----
+ mkspecs/features/mac/sdk.prf          |  61 --------
+ 5 files changed, 1 insertion(+), 351 deletions(-)
+ delete mode 100644 mkspecs/features/mac/sdk.mk
+ delete mode 100644 mkspecs/features/mac/sdk.prf
+
+diff --git a/mkspecs/common/mac.conf b/mkspecs/common/mac.conf
+index 61bea952b2..9909dae726 100644
+--- a/mkspecs/common/mac.conf
++++ b/mkspecs/common/mac.conf
+@@ -23,7 +23,7 @@ QMAKE_INCDIR_OPENGL     = \
+ 
+ QMAKE_FIX_RPATH         = install_name_tool -id
+ 
+-QMAKE_LFLAGS_RPATH      = -Wl,-rpath,
++QMAKE_LFLAGS_RPATH      =
+ QMAKE_LFLAGS_GCSECTIONS = -Wl,-dead_strip
+ 
+ QMAKE_LFLAGS_REL_RPATH  =
+diff --git a/mkspecs/features/mac/default_post.prf b/mkspecs/features/mac/default_post.prf
+index ba163efc18..b80ec1e801 100644
+--- a/mkspecs/features/mac/default_post.prf
++++ b/mkspecs/features/mac/default_post.prf
+@@ -68,212 +68,6 @@ qt {
+     }
+ }
+ 
+-# Add the same default rpaths as Xcode does for new projects.
+-# This is especially important for iOS/tvOS/watchOS where no other option is possible.
+-!no_default_rpath {
+-    uikit: QMAKE_RPATHDIR += @executable_path/Frameworks
+-    else: QMAKE_RPATHDIR += @executable_path/../Frameworks
+-    equals(TEMPLATE, lib):!plugin:lib_bundle: QMAKE_RPATHDIR += @loader_path/Frameworks
+-}
+-
+-# Don't pass -headerpad_max_install_names when using Bitcode.
+-# In that case the linker emits a warning stating that the flag is ignored when
+-# used with bitcode, for reasons that cannot be determined (rdar://problem/20748962).
+-# Using this flag is also unnecessary in practice on UIKit platforms since they
+-# are sandboxed, and only UIKit platforms support bitcode to begin with.
+-!bitcode: QMAKE_LFLAGS += $$QMAKE_LFLAGS_HEADERPAD
+-
+-app_extension_api_only {
+-    QMAKE_CFLAGS              += $$QMAKE_CFLAGS_APPLICATION_EXTENSION
+-    QMAKE_CXXFLAGS            += $$QMAKE_CFLAGS_APPLICATION_EXTENSION
+-    QMAKE_CXXFLAGS_PRECOMPILE += $$QMAKE_CFLAGS_APPLICATION_EXTENSION
+-    QMAKE_LFLAGS              += $$QMAKE_CFLAGS_APPLICATION_EXTENSION
+-}
+-
+-macx-xcode {
+-    qmake_pkginfo_typeinfo.name = QMAKE_PKGINFO_TYPEINFO
+-    !isEmpty(QMAKE_PKGINFO_TYPEINFO): \
+-        qmake_pkginfo_typeinfo.value = $$QMAKE_PKGINFO_TYPEINFO
+-    else: \
+-        qmake_pkginfo_typeinfo.value = "????"
+-    QMAKE_MAC_XCODE_SETTINGS += qmake_pkginfo_typeinfo
+-
+-    bundle_version = $$VERSION
+-    isEmpty(bundle_version): bundle_version = 1.0.0
+-
+-    l = $$split(bundle_version, '.') 0 0  # make sure there are at least three
+-    VER_MAJ = $$member(l, 0, 0)
+-    VER_MIN = $$member(l, 1, 1)
+-    VER_PAT = $$member(l, 2, 2)
+-    unset(l)
+-
+-    qmake_full_version.name = QMAKE_FULL_VERSION
+-    qmake_full_version.value = $${VER_MAJ}.$${VER_MIN}.$${VER_PAT}
+-    QMAKE_MAC_XCODE_SETTINGS += qmake_full_version
+-
+-    qmake_short_version.name = QMAKE_SHORT_VERSION
+-    qmake_short_version.value = $${VER_MAJ}.$${VER_MIN}
+-    QMAKE_MAC_XCODE_SETTINGS += qmake_short_version
+-
+-    !isEmpty(QMAKE_XCODE_DEBUG_INFORMATION_FORMAT) {
+-        debug_information_format.name = DEBUG_INFORMATION_FORMAT
+-        debug_information_format.value = $$QMAKE_XCODE_DEBUG_INFORMATION_FORMAT
+-        debug_information_format.build = debug
+-        QMAKE_MAC_XCODE_SETTINGS += debug_information_format
+-    }
+-
+-    QMAKE_XCODE_ARCHS =
+-
+-    arch_device.name = "ARCHS[sdk=$${device.sdk}*]"
+-    arch_device.value = $$QMAKE_APPLE_DEVICE_ARCHS
+-    QMAKE_XCODE_ARCHS += $$QMAKE_APPLE_DEVICE_ARCHS
+-    QMAKE_MAC_XCODE_SETTINGS += arch_device
+-
+-    simulator {
+-        arch_simulator.name = "ARCHS[sdk=$${simulator.sdk}*]"
+-        arch_simulator.value = $$QMAKE_APPLE_SIMULATOR_ARCHS
+-        QMAKE_XCODE_ARCHS += $$QMAKE_APPLE_SIMULATOR_ARCHS
+-        QMAKE_MAC_XCODE_SETTINGS += arch_simulator
+-    }
+-
+-    only_active_arch.name = ONLY_ACTIVE_ARCH
+-    only_active_arch.value = YES
+-    only_active_arch.build = debug
+-    QMAKE_MAC_XCODE_SETTINGS += only_active_arch
+-} else {
+-    device|!simulator: VALID_DEVICE_ARCHS = $$QMAKE_APPLE_DEVICE_ARCHS
+-    simulator: VALID_SIMULATOR_ARCHS = $$QMAKE_APPLE_SIMULATOR_ARCHS
+-    VALID_ARCHS = $$VALID_DEVICE_ARCHS $$VALID_SIMULATOR_ARCHS
+-
+-    isEmpty(VALID_ARCHS): \
+-        error("QMAKE_APPLE_DEVICE_ARCHS or QMAKE_APPLE_SIMULATOR_ARCHS must contain at least one architecture")
+-
+-    single_arch: VALID_ARCHS = $$first(VALID_ARCHS)
+-
+-    ACTIVE_ARCHS = $(filter $(EXPORT_VALID_ARCHS), $(ARCHS))
+-    ARCH_ARGS = $(foreach arch, $(if $(EXPORT_ACTIVE_ARCHS), $(EXPORT_ACTIVE_ARCHS), $(EXPORT_VALID_ARCHS)), -arch $(arch))
+-
+-    QMAKE_EXTRA_VARIABLES += VALID_ARCHS ACTIVE_ARCHS ARCH_ARGS
+-
+-    arch_flags = $(EXPORT_ARCH_ARGS)
+-
+-    QMAKE_CFLAGS += $$arch_flags
+-    QMAKE_CXXFLAGS += $$arch_flags
+-    QMAKE_LFLAGS += $$arch_flags
+-
+-    QMAKE_PCH_ARCHS = $$VALID_ARCHS
+-
+-    macos: deployment_target = $$QMAKE_MACOSX_DEPLOYMENT_TARGET
+-    ios: deployment_target = $$QMAKE_IOS_DEPLOYMENT_TARGET
+-    tvos: deployment_target = $$QMAKE_TVOS_DEPLOYMENT_TARGET
+-    watchos: deployment_target = $$QMAKE_WATCHOS_DEPLOYMENT_TARGET
+-
+-    # If we're doing a simulator and device build, device and simulator
+-    # architectures use different paths and flags for the sysroot and
+-    # deployment target switch, so we must multiplex them across multiple
+-    # architectures using -Xarch. Otherwise we fall back to the simple path.
+-    # This is not strictly necessary, but results in cleaner command lines
+-    # and makes it easier for people to override EXPORT_VALID_ARCHS to limit
+-    # individual rules to a different set of architecture(s) from the overall
+-    # build (such as machtest in QtCore).
+-    simulator:device {
+-        QMAKE_XARCH_CFLAGS =
+-        QMAKE_XARCH_LFLAGS =
+-        QMAKE_EXTRA_VARIABLES += QMAKE_XARCH_CFLAGS QMAKE_XARCH_LFLAGS
+-
+-        for (arch, VALID_ARCHS) {
+-            contains(VALID_SIMULATOR_ARCHS, $$arch) {
+-                sdk = $$simulator.sdk
+-                version_identifier = $$simulator.deployment_identifier
+-            } else {
+-                sdk = $$device.sdk
+-                version_identifier = $$device.deployment_identifier
+-            }
+-
+-            version_min_flags = \
+-                -Xarch_$${arch} \
+-                -m$${version_identifier}-version-min=$$deployment_target
+-            QMAKE_XARCH_CFLAGS_$${arch} = $$version_min_flags \
+-                -Xarch_$${arch} \
+-                -isysroot$$xcodeSDKInfo(Path, $$sdk)
+-            QMAKE_XARCH_LFLAGS_$${arch} = $$version_min_flags \
+-                -Xarch_$${arch} \
+-                -Wl,-syslibroot,$$xcodeSDKInfo(Path, $$sdk)
+-
+-            QMAKE_XARCH_CFLAGS += $(EXPORT_QMAKE_XARCH_CFLAGS_$${arch})
+-            QMAKE_XARCH_LFLAGS += $(EXPORT_QMAKE_XARCH_LFLAGS_$${arch})
+-
+-            QMAKE_EXTRA_VARIABLES += \
+-                QMAKE_XARCH_CFLAGS_$${arch} \
+-                QMAKE_XARCH_LFLAGS_$${arch}
+-        }
+-
+-        QMAKE_CFLAGS += $(EXPORT_QMAKE_XARCH_CFLAGS)
+-        QMAKE_CXXFLAGS += $(EXPORT_QMAKE_XARCH_CFLAGS)
+-        QMAKE_LFLAGS += $(EXPORT_QMAKE_XARCH_LFLAGS)
+-    } else {
+-        simulator {
+-            version_identifier = $$simulator.deployment_identifier
+-            sysroot_path  = $$xcodeSDKInfo(Path, $$simulator.sdk)
+-        } else {
+-            version_identifier = $$device.deployment_identifier
+-            sysroot_path  = $$xcodeSDKInfo(Path, $$device.sdk)
+-        }
+-        version_min_flag = -m$${version_identifier}-version-min=$$deployment_target
+-        QMAKE_CFLAGS += -isysroot $$sysroot_path $$version_min_flag
+-        QMAKE_CXXFLAGS += -isysroot $$sysroot_path $$version_min_flag
+-        QMAKE_LFLAGS += -Wl,-syslibroot,$$sysroot_path $$version_min_flag
+-    }
+-
+-    # Enable precompiled headers for multiple architectures
+-    QMAKE_CFLAGS_USE_PRECOMPILE =
+-    for (arch, VALID_ARCHS) {
+-        icc_pch_style: \
+-            use_flag = "-pch-use "
+-        else: \
+-            use_flag = -include
+-
+-        # Only use Xarch with multi-arch, as the option confuses ccache
+-        count(VALID_ARCHS, 1, greaterThan): \
+-            QMAKE_CFLAGS_USE_PRECOMPILE += \
+-                -Xarch_$${arch}
+-
+-        QMAKE_CFLAGS_USE_PRECOMPILE += \
+-            $${use_flag}${QMAKE_PCH_OUTPUT_$${arch}}
+-    }
+-    icc_pch_style {
+-        QMAKE_CXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE -include ${QMAKE_PCH_INPUT}
+-        QMAKE_CFLAGS_USE_PRECOMPILE =
+-    } else {
+-        QMAKE_CXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
+-        QMAKE_OBJCFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
+-        QMAKE_OBJCXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
+-    }
+-
+-    QMAKE_PCH_OUTPUT_EXT = _${QMAKE_PCH_ARCH}$${QMAKE_PCH_OUTPUT_EXT}
+-}
+-
+-!equals(sdk_version, $$QMAKE_MAC_SDK_VERSION) {
+-    # Explicit SDK version has been set, respect that
+-    QMAKE_LFLAGS += -Wl,-sdk_version -Wl,$$sdk_version
+-}
+-
+-cache(QMAKE_XCODE_DEVELOPER_PATH, stash)
+-!isEmpty(QMAKE_XCODE_VERSION): \
+-    cache(QMAKE_XCODE_VERSION, stash)
+-
+-QMAKE_XCODE_LIBRARY_SUFFIX = $$qtPlatformTargetSuffix()
+-
+-xcode_product_bundle_identifier_setting.name = PRODUCT_BUNDLE_IDENTIFIER
+-xcode_product_bundle_identifier_setting.value = $$QMAKE_TARGET_BUNDLE_PREFIX
+-isEmpty(xcode_product_bundle_identifier_setting.value): \
+-    xcode_product_bundle_identifier_setting.value = "com.yourcompany"
+-xcode_product_bundle_target = $$QMAKE_BUNDLE
+-isEmpty(xcode_product_bundle_target): \
+-    xcode_product_bundle_target = ${PRODUCT_NAME:rfc1034identifier}
+-xcode_product_bundle_identifier_setting.value = "$${xcode_product_bundle_identifier_setting.value}.$${xcode_product_bundle_target}"
+-QMAKE_MAC_XCODE_SETTINGS += xcode_product_bundle_identifier_setting
+-
+ !macx-xcode {
+     generate_xcode_project.commands = @$(QMAKE) -spec macx-xcode \"$(EXPORT__PRO_FILE_)\" $$QMAKE_ARGS
+     generate_xcode_project.target = xcodeproj
+diff --git a/mkspecs/features/mac/default_pre.prf b/mkspecs/features/mac/default_pre.prf
+index e3534561a5..3b01424e67 100644
+--- a/mkspecs/features/mac/default_pre.prf
++++ b/mkspecs/features/mac/default_pre.prf
+@@ -1,60 +1,2 @@
+ CONFIG = asset_catalogs rez $$CONFIG
+ load(default_pre)
+-
+-isEmpty(QMAKE_XCODE_DEVELOPER_PATH) {
+-    # Get path of Xcode's Developer directory
+-    QMAKE_XCODE_DEVELOPER_PATH = $$system("/usr/bin/xcode-select --print-path 2>/dev/null")
+-    isEmpty(QMAKE_XCODE_DEVELOPER_PATH): \
+-        error("Xcode path is not set. Please use xcode-select to choose Xcode installation path.")
+-
+-    # Make sure Xcode path is valid
+-    !exists($$QMAKE_XCODE_DEVELOPER_PATH): \
+-        error("Xcode is not installed in $${QMAKE_XCODE_DEVELOPER_PATH}. Please use xcode-select to choose Xcode installation path.")
+-}
+-
+-isEmpty(QMAKE_XCODEBUILD_PATH): \
+-    QMAKE_XCODEBUILD_PATH = $$system("/usr/bin/xcrun -find xcodebuild 2>/dev/null")
+-
+-!isEmpty(QMAKE_XCODEBUILD_PATH) {
+-    # Make sure Xcode is set up properly
+-    !system("/usr/bin/xcrun xcodebuild -license check 2>/dev/null"): \
+-        error("Xcode not set up properly. You need to confirm the license agreement by running 'sudo xcrun xcodebuild -license accept'.")
+-
+-    isEmpty(QMAKE_XCODE_VERSION) {
+-        # Extract Xcode version using xcodebuild
+-        xcode_version = $$system("/usr/bin/xcrun xcodebuild -version")
+-        QMAKE_XCODE_VERSION = $$member(xcode_version, 1)
+-        isEmpty(QMAKE_XCODE_VERSION): error("Could not resolve Xcode version.")
+-        unset(xcode_version)
+-    }
+-}
+-
+-isEmpty(QMAKE_TARGET_BUNDLE_PREFIX) {
+-    QMAKE_XCODE_PREFERENCES_FILE = $$(HOME)/Library/Preferences/com.apple.dt.Xcode.plist
+-    exists($$QMAKE_XCODE_PREFERENCES_FILE): \
+-        QMAKE_TARGET_BUNDLE_PREFIX = $$system("/usr/libexec/PlistBuddy -c 'print IDETemplateOptions:bundleIdentifierPrefix' $$QMAKE_XCODE_PREFERENCES_FILE 2>/dev/null")
+-
+-    !isEmpty(_QMAKE_CACHE_):!isEmpty(QMAKE_TARGET_BUNDLE_PREFIX): \
+-        cache(QMAKE_TARGET_BUNDLE_PREFIX)
+-}
+-
+-QMAKE_ASSET_CATALOGS_APP_ICON = AppIcon
+-
+-# Make the default debug info format for static debug builds
+-# DWARF instead of DWARF with dSYM. This cuts down build times
+-# for application debug builds significantly, as Xcode doesn't
+-# have to pull out all the DWARF info from the Qt static libs
+-# and put it into a dSYM file. We don't need that dSYM file in
+-# the first place, since the information is available in the
+-# object files inside the archives (static libraries).
+-macx-xcode:qtConfig(static): \
+-    QMAKE_XCODE_DEBUG_INFORMATION_FORMAT = dwarf
+-
+-# This variable is used by the xcode_dynamic_library_suffix
+-# feature, which allows Xcode to choose the Qt libraries to link to
+-# at build time, depending on the current Xcode SDK and configuration.
+-QMAKE_XCODE_LIBRARY_SUFFIX_SETTING = QT_LIBRARY_SUFFIX
+-
+-xcode_copy_phase_strip_setting.name = COPY_PHASE_STRIP
+-xcode_copy_phase_strip_setting.value = NO
+-QMAKE_MAC_XCODE_SETTINGS += xcode_copy_phase_strip_setting
+diff --git a/mkspecs/features/mac/sdk.mk b/mkspecs/features/mac/sdk.mk
+deleted file mode 100644
+index c40f58c987..0000000000
+--- a/mkspecs/features/mac/sdk.mk
++++ /dev/null
+@@ -1,25 +0,0 @@
+-
+-ifeq ($(QT_MAC_SDK_NO_VERSION_CHECK),)
+-    CHECK_SDK_COMMAND = /usr/bin/xcrun --sdk $(EXPORT_QMAKE_MAC_SDK) -show-sdk-version 2>&1
+-    CURRENT_MAC_SDK_VERSION := $(shell DEVELOPER_DIR=$(EXPORT_QMAKE_XCODE_DEVELOPER_PATH) $(CHECK_SDK_COMMAND))
+-    ifneq ($(CURRENT_MAC_SDK_VERSION),$(EXPORT_QMAKE_MAC_SDK_VERSION))
+-        # We don't want to complain about out of date SDK unless the target needs to be remade.
+-        # This covers use-cases such as running 'make check' after moving the build to a
+-        # computer without Xcode or with a different Xcode version.
+-        TARGET_UP_TO_DATE := $(shell QT_MAC_SDK_NO_VERSION_CHECK=1 $(MAKE) --question $(QMAKE_TARGET) && echo 1 || echo 0)
+-        ifeq ($(TARGET_UP_TO_DATE),0)
+-            ifneq ($(findstring missing DEVELOPER_DIR path,$(CURRENT_MAC_SDK_VERSION)),)
+-                $(info The developer dir $(EXPORT_QMAKE_XCODE_DEVELOPER_PATH) is no longer valid.)
+-            else ifneq ($(findstring SDK "$(EXPORT_QMAKE_MAC_SDK)" cannot be located,$(CURRENT_MAC_SDK_VERSION)),)
+-                $(info The developer dir $(EXPORT_QMAKE_XCODE_DEVELOPER_PATH) no longer contains the $(EXPORT_QMAKE_MAC_SDK_VERSION) platform SDK.)
+-            else ifneq ($(CURRENT_MAC_SDK_VERSION),)
+-                $(info The platform SDK has been changed from version $(EXPORT_QMAKE_MAC_SDK_VERSION) to version $(CURRENT_MAC_SDK_VERSION).)
+-            else
+-                $(info Unknown error resolving current platform SDK version.)
+-            endif
+-            $(info This requires a fresh build. Please wipe the build directory completely,)
+-            $(info including any .qmake.stash and .qmake.cache files generated by qmake.)
+-            $(error ^)
+-        endif
+-    endif
+-endif
+diff --git a/mkspecs/features/mac/sdk.prf b/mkspecs/features/mac/sdk.prf
+deleted file mode 100644
+index 3a9c2778bb..0000000000
+--- a/mkspecs/features/mac/sdk.prf
++++ /dev/null
+@@ -1,61 +0,0 @@
+-
+-isEmpty(QMAKE_MAC_SDK): \
+-    error("QMAKE_MAC_SDK must be set when using CONFIG += sdk.")
+-
+-contains(QMAKE_MAC_SDK, .*/.*): \
+-    error("QMAKE_MAC_SDK can only contain short-form SDK names (eg. macosx, iphoneos)")
+-
+-defineReplace(xcodeSDKInfo) {
+-    info = $$1
+-    equals(info, "Path"): \
+-        infoarg = --show-sdk-path
+-    equals(info, "PlatformPath"): \
+-        infoarg = --show-sdk-platform-path
+-    equals(info, "SDKVersion"): \
+-        infoarg = --show-sdk-version
+-    sdk = $$2
+-    isEmpty(sdk): \
+-        sdk = $$QMAKE_MAC_SDK
+-
+-    isEmpty(QMAKE_MAC_SDK.$${sdk}.$${info}) {
+-        QMAKE_MAC_SDK.$${sdk}.$${info} = $$system("/usr/bin/xcrun --sdk $$sdk $$infoarg 2>/dev/null")
+-        # --show-sdk-platform-path won't work for Command Line Tools; this is fine
+-        # only used by the XCTest backend to testlib
+-        isEmpty(QMAKE_MAC_SDK.$${sdk}.$${info}):if(!isEmpty(QMAKE_XCODEBUILD_PATH)|!equals(infoarg, "--show-sdk-platform-path")): \
+-            error("Could not resolve SDK $$info for \'$$sdk\' using $$infoarg")
+-        cache(QMAKE_MAC_SDK.$${sdk}.$${info}, set stash, QMAKE_MAC_SDK.$${sdk}.$${info})
+-    }
+-
+-    return($$eval(QMAKE_MAC_SDK.$${sdk}.$${info}))
+-}
+-
+-QMAKE_MAC_SDK_PATH = $$xcodeSDKInfo(Path)
+-QMAKE_MAC_SDK_PLATFORM_PATH = $$xcodeSDKInfo(PlatformPath)
+-QMAKE_MAC_SDK_VERSION = $$xcodeSDKInfo(SDKVersion)
+-
+-isEmpty(QMAKE_EXPORT_INCDIR_OPENGL) {
+-    QMAKE_EXPORT_INCDIR_OPENGL = $$QMAKE_INCDIR_OPENGL
+-    sysrootified =
+-    for(val, QMAKE_INCDIR_OPENGL): sysrootified += $${QMAKE_MAC_SDK_PATH}$$val
+-    QMAKE_INCDIR_OPENGL = $$sysrootified
+-}
+-
+-QMAKESPEC_NAME = $$basename(QMAKESPEC)
+-
+-# Resolve SDK version of various tools
+-for(tool, $$list(QMAKE_CC QMAKE_CXX QMAKE_FIX_RPATH QMAKE_AR QMAKE_RANLIB QMAKE_LINK QMAKE_LINK_SHLIB QMAKE_ACTOOL QMAKE_LINK_C QMAKE_LINK_C_SHLIB)) {
+-    tool_variable = QMAKE_MAC_SDK.$${QMAKESPEC_NAME}.$${QMAKE_MAC_SDK}.$${tool}
+-    !isEmpty($$tool_variable) {
+-        $$tool = $$eval($$tool_variable)
+-        next()
+-    }
+-
+-    value = $$eval($$tool)
+-    isEmpty(value): next()
+-
+-    sysrooted = $$system("/usr/bin/xcrun -sdk $$QMAKE_MAC_SDK -find $$first(value) 2>/dev/null")
+-    isEmpty(sysrooted): next()
+-
+-    $$tool = $$sysrooted $$member(value, 1, -1)
+-    cache($$tool_variable, set stash, $$tool)
+-}
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0002-qtbase-mac.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0002-qtbase-mac.patch
new file mode 100644
index 0000000000000..2e28466c50325
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0002-qtbase-mac.patch
@@ -0,0 +1,116 @@
+From ccaa916eab33093704293bc911eedd85fbe5f160 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Milan=20P=C3=A4ssler?= <me@pbb.lc>
+Date: Fri, 3 Apr 2020 21:15:27 +0200
+Subject: [PATCH 02/10] qtbase-mac
+
+---
+ src/corelib/kernel/qcore_mac_p.h | 16 ++++++++++++++--
+ src/testlib/qappletestlogger.cpp |  2 +-
+ src/testlib/qappletestlogger_p.h |  2 +-
+ src/testlib/qtestcase.cpp        |  2 +-
+ src/testlib/qtestlog.cpp         |  2 +-
+ src/testlib/qtestlog_p.h         |  2 +-
+ 6 files changed, 19 insertions(+), 7 deletions(-)
+
+diff --git a/src/corelib/kernel/qcore_mac_p.h b/src/corelib/kernel/qcore_mac_p.h
+index 535d3579b2..3d70bf39c1 100644
+--- a/src/corelib/kernel/qcore_mac_p.h
++++ b/src/corelib/kernel/qcore_mac_p.h
+@@ -225,7 +225,7 @@ private:
+ 
+ // --------------------------------------------------------------------------
+ 
+-#if !defined(QT_BOOTSTRAPPED)
++#if 0
+ 
+ QT_END_NAMESPACE
+ #include <os/activity.h>
+@@ -303,7 +303,19 @@ QT_MAC_WEAK_IMPORT(_os_activity_current);
+ 
+ #define QT_APPLE_SCOPED_LOG_ACTIVITY(...) QAppleLogActivity scopedLogActivity = QT_APPLE_LOG_ACTIVITY(__VA_ARGS__).enter();
+ 
+-#endif // !defined(QT_BOOTSTRAPPED)
++#else // !defined(QT_BOOTSTRAPPED)
++
++#define QT_APPLE_LOG_ACTIVITY_WITH_PARENT3(...)
++#define QT_APPLE_LOG_ACTIVITY_WITH_PARENT2(...)
++#define QT_APPLE_LOG_ACTIVITY_WITH_PARENT(...)
++
++#define QT_APPLE_LOG_ACTIVITY2(...)
++#define QT_APPLE_LOG_ACTIVITY1(...)
++#define QT_APPLE_LOG_ACTIVITY(...)
++
++#define QT_APPLE_SCOPED_LOG_ACTIVITY(...)
++
++#endif
+ 
+ // -------------------------------------------------------------------------
+ 
+diff --git a/src/testlib/qappletestlogger.cpp b/src/testlib/qappletestlogger.cpp
+index dfeadebdef..2a74330c1d 100644
+--- a/src/testlib/qappletestlogger.cpp
++++ b/src/testlib/qappletestlogger.cpp
+@@ -43,7 +43,7 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
+-#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
++#if defined(QT_USE_APPLE_UNIFIED_LOGGING) && 0
+ 
+ using namespace QTestPrivate;
+ 
+diff --git a/src/testlib/qappletestlogger_p.h b/src/testlib/qappletestlogger_p.h
+index 62c6d95c5a..f8e0a3b767 100644
+--- a/src/testlib/qappletestlogger_p.h
++++ b/src/testlib/qappletestlogger_p.h
+@@ -57,7 +57,7 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
+-#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
++#if defined(QT_USE_APPLE_UNIFIED_LOGGING) && 0
+ class QAppleTestLogger : public QAbstractTestLogger
+ {
+ public:
+diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
+index 70733a692a..8bcda17858 100644
+--- a/src/testlib/qtestcase.cpp
++++ b/src/testlib/qtestcase.cpp
+@@ -852,7 +852,7 @@ Q_TESTLIB_EXPORT void qtest_qParseArgs(int argc, const char *const argv[], bool
+ 
+     bool addFallbackLogger = !explicitLoggerRequested;
+ 
+-#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
++#if defined(QT_USE_APPLE_UNIFIED_LOGGING) && 0
+     // Any explicitly requested loggers will be added by now, so we can check if they use stdout
+     const bool safeToAddAppleLogger = !AppleUnifiedLogger::willMirrorToStderr() || !QTestLog::loggerUsingStdout();
+     if (safeToAddAppleLogger && QAppleTestLogger::debugLoggingEnabled()) {
+diff --git a/src/testlib/qtestlog.cpp b/src/testlib/qtestlog.cpp
+index f3ebf343c5..9b4f526b2e 100644
+--- a/src/testlib/qtestlog.cpp
++++ b/src/testlib/qtestlog.cpp
+@@ -465,7 +465,7 @@ void QTestLog::addLogger(LogMode mode, const char *filename)
+     case QTestLog::TAP:
+         logger = new QTapTestLogger(filename);
+         break;
+-#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
++#if defined(QT_USE_APPLE_UNIFIED_LOGGING) && 0
+     case QTestLog::Apple:
+         logger = new QAppleTestLogger;
+         break;
+diff --git a/src/testlib/qtestlog_p.h b/src/testlib/qtestlog_p.h
+index fff36f290d..f737ccf064 100644
+--- a/src/testlib/qtestlog_p.h
++++ b/src/testlib/qtestlog_p.h
+@@ -72,7 +72,7 @@ public:
+ 
+     enum LogMode {
+         Plain = 0, XML, LightXML, XunitXML, CSV, TeamCity, TAP
+-#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
++#if defined(QT_USE_APPLE_UNIFIED_LOGGING) && 0
+         , Apple
+ #endif
+ #if defined(HAVE_XCTEST)
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0003-qtbase-mkspecs.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0003-qtbase-mkspecs.patch
new file mode 100644
index 0000000000000..b704d0dc8722a
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0003-qtbase-mkspecs.patch
@@ -0,0 +1,464 @@
+From 1cb5581d7f20bf87ac8d67a7295447a78a1d9645 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Milan=20P=C3=A4ssler?= <me@pbb.lc>
+Date: Sat, 4 Apr 2020 00:25:52 +0200
+Subject: [PATCH 03/10] qtbase-mkspecs
+
+---
+ mkspecs/features/create_cmake.prf             | 51 +++---------
+ .../data/cmake/Qt5BasicConfig.cmake.in        | 80 +------------------
+ mkspecs/features/qml_module.prf               |  2 +-
+ mkspecs/features/qml_plugin.prf               |  2 +-
+ mkspecs/features/qt_app.prf                   |  2 +-
+ mkspecs/features/qt_build_paths.prf           |  4 +-
+ mkspecs/features/qt_docs.prf                  | 10 +--
+ mkspecs/features/qt_example_installs.prf      |  2 +-
+ mkspecs/features/qt_functions.prf             |  2 +-
+ mkspecs/features/qt_installs.prf              | 22 ++---
+ mkspecs/features/qt_plugin.prf                |  2 +-
+ 11 files changed, 38 insertions(+), 141 deletions(-)
+
+diff --git a/mkspecs/features/create_cmake.prf b/mkspecs/features/create_cmake.prf
+index 0e71fd0015..ba071d9a70 100644
+--- a/mkspecs/features/create_cmake.prf
++++ b/mkspecs/features/create_cmake.prf
+@@ -21,7 +21,7 @@ load(cmake_functions)
+ # at cmake time whether package has been found via a symlink, and correct
+ # that to an absolute path. This is only done for installations to
+ # the /usr or / prefix.
+-CMAKE_INSTALL_LIBS_DIR = $$cmakeTargetPath($$[QT_INSTALL_LIBS])
++CMAKE_INSTALL_LIBS_DIR = $$cmakeTargetPath($$NIX_OUTPUT_OUT/lib/)
+ contains(CMAKE_INSTALL_LIBS_DIR, ^(/usr)?/lib(64)?.*): CMAKE_USR_MOVE_WORKAROUND = $$CMAKE_INSTALL_LIBS_DIR
+ 
+ CMAKE_OUT_DIR = $$MODULE_BASE_OUTDIR/lib/cmake
+@@ -77,45 +77,20 @@ split_incpath {
+         $$cmake_extra_source_includes.output
+ }
+ 
+-CMAKE_INCLUDE_DIR = $$cmakeRelativePath($$[QT_INSTALL_HEADERS], $$[QT_INSTALL_PREFIX])
+-contains(CMAKE_INCLUDE_DIR, "^\\.\\./.*") {
+-    CMAKE_INCLUDE_DIR = $$[QT_INSTALL_HEADERS]/
+-    CMAKE_INCLUDE_DIR_IS_ABSOLUTE = True
+-}
++CMAKE_INCLUDE_DIR = $$NIX_OUTPUT_DEV/include/
++CMAKE_INCLUDE_DIR_IS_ABSOLUTE = True
+ 
+-CMAKE_LIB_DIR = $$cmakeRelativePath($$[QT_INSTALL_LIBS], $$[QT_INSTALL_PREFIX])
+-contains(CMAKE_LIB_DIR,"^\\.\\./.*") {
+-    CMAKE_LIB_DIR = $$[QT_INSTALL_LIBS]/
+-    CMAKE_LIB_DIR_IS_ABSOLUTE = True
+-} else {
+-    CMAKE_RELATIVE_INSTALL_LIBS_DIR = $$cmakeRelativePath($$[QT_INSTALL_PREFIX], $$[QT_INSTALL_LIBS])
+-    # We need to go up another two levels because the CMake files are
+-    # installed in $${CMAKE_LIB_DIR}/cmake/Qt5$${CMAKE_MODULE_NAME}
+-    CMAKE_RELATIVE_INSTALL_DIR = "$${CMAKE_RELATIVE_INSTALL_LIBS_DIR}../../"
+-}
++CMAKE_BIN_DIR = $$NIX_OUTPUT_BIN/bin/
++CMAKE_BIN_DIR_IS_ABSOLUTE = True
+ 
+-CMAKE_BIN_DIR = $$cmakeRelativePath($$[QT_HOST_BINS], $$[QT_INSTALL_PREFIX])
+-contains(CMAKE_BIN_DIR, "^\\.\\./.*") {
+-    CMAKE_BIN_DIR = $$[QT_HOST_BINS]/
+-    CMAKE_BIN_DIR_IS_ABSOLUTE = True
+-}
++CMAKE_LIB_DIR = $$NIX_OUTPUT_OUT/lib/
++CMAKE_LIB_DIR_IS_ABSOLUTE = True
+ 
+-CMAKE_PLUGIN_DIR = $$cmakeRelativePath($$[QT_INSTALL_PLUGINS], $$[QT_INSTALL_PREFIX])
+-contains(CMAKE_PLUGIN_DIR, "^\\.\\./.*") {
+-    CMAKE_PLUGIN_DIR = $$[QT_INSTALL_PLUGINS]/
+-    CMAKE_PLUGIN_DIR_IS_ABSOLUTE = True
+-}
++CMAKE_PLUGIN_DIR = $$NIX_OUTPUT_PLUGIN/
++CMAKE_PLUGIN_DIR_IS_ABSOLUTE = True
+ 
+-win32:!static:!staticlib {
+-    CMAKE_DLL_DIR = $$cmakeRelativePath($$[QT_INSTALL_BINS], $$[QT_INSTALL_PREFIX])
+-    contains(CMAKE_DLL_DIR, "^\\.\\./.*") {
+-        CMAKE_DLL_DIR = $$[QT_INSTALL_BINS]/
+-        CMAKE_DLL_DIR_IS_ABSOLUTE = True
+-    }
+-} else {
+-    CMAKE_DLL_DIR = $$CMAKE_LIB_DIR
+-    CMAKE_DLL_DIR_IS_ABSOLUTE = $$CMAKE_LIB_DIR_IS_ABSOLUTE
+-}
++CMAKE_DLL_DIR = $$NIX_OUTPUT_OUT/lib/
++CMAKE_DLL_DIR_IS_ABSOLUTE = True
+ 
+ static|staticlib:CMAKE_STATIC_TYPE = true
+ 
+@@ -258,7 +233,7 @@ contains(CONFIG, plugin) {
+ 
+     cmake_qt5_plugin_file.files = $$cmake_target_file.output
+     static|staticlib: cmake_qt5_plugin_file.files += $$cmake_qt5_plugin_import_file.output
+-    cmake_qt5_plugin_file.path = $$[QT_INSTALL_LIBS]/cmake/Qt5$${CMAKE_MODULE_NAME}
++    cmake_qt5_plugin_file.path = $$NIX_OUTPUT_OUT/lib/cmake/Qt5$${CMAKE_MODULE_NAME}
+     INSTALLS += cmake_qt5_plugin_file
+ 
+     return()
+@@ -396,7 +371,7 @@ exists($$cmake_macros_file.input) {
+     cmake_qt5_module_files.files += $$cmake_macros_file.output
+ }
+ 
+-cmake_qt5_module_files.path = $$[QT_INSTALL_LIBS]/cmake/Qt5$${CMAKE_MODULE_NAME}
++cmake_qt5_module_files.path = $$NIX_OUTPUT_OUT/lib/cmake/Qt5$${CMAKE_MODULE_NAME}
+ 
+ # We are generating cmake files. Most developers of Qt are not aware of cmake,
+ # so we require automatic tests to be available. The only module which should
+diff --git a/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in b/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
+index 1099a761ce..87679b7e68 100644
+--- a/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
++++ b/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
+@@ -3,30 +3,6 @@ if (CMAKE_VERSION VERSION_LESS 3.1.0)
+     message(FATAL_ERROR \"Qt 5 $${CMAKE_MODULE_NAME} module requires at least CMake version 3.1.0\")
+ endif()
+ 
+-!!IF !isEmpty(CMAKE_USR_MOVE_WORKAROUND)
+-!!IF !isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-set(_qt5$${CMAKE_MODULE_NAME}_install_prefix \"$$[QT_INSTALL_PREFIX]\")
+-!!ELSE
+-get_filename_component(_IMPORT_PREFIX \"${CMAKE_CURRENT_LIST_FILE}\" PATH)
+-# Use original install prefix when loaded through a
+-# cross-prefix symbolic link such as /lib -> /usr/lib.
+-get_filename_component(_realCurr \"${_IMPORT_PREFIX}\" REALPATH)
+-get_filename_component(_realOrig \"$$CMAKE_INSTALL_LIBS_DIR/cmake/Qt5$${CMAKE_MODULE_NAME}\" REALPATH)
+-if(_realCurr STREQUAL _realOrig)
+-    get_filename_component(_qt5$${CMAKE_MODULE_NAME}_install_prefix \"$$CMAKE_INSTALL_LIBS_DIR/$${CMAKE_RELATIVE_INSTALL_LIBS_DIR}\" ABSOLUTE)
+-else()
+-    get_filename_component(_qt5$${CMAKE_MODULE_NAME}_install_prefix \"${CMAKE_CURRENT_LIST_DIR}/$${CMAKE_RELATIVE_INSTALL_DIR}\" ABSOLUTE)
+-endif()
+-unset(_realOrig)
+-unset(_realCurr)
+-unset(_IMPORT_PREFIX)
+-!!ENDIF
+-!!ELIF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-get_filename_component(_qt5$${CMAKE_MODULE_NAME}_install_prefix \"${CMAKE_CURRENT_LIST_DIR}/$${CMAKE_RELATIVE_INSTALL_DIR}\" ABSOLUTE)
+-!!ELSE
+-set(_qt5$${CMAKE_MODULE_NAME}_install_prefix \"$$[QT_INSTALL_PREFIX]\")
+-!!ENDIF
+-
+ !!IF !equals(TEMPLATE, aux)
+ # For backwards compatibility only. Use Qt5$${CMAKE_MODULE_NAME}_VERSION instead.
+ set(Qt5$${CMAKE_MODULE_NAME}_VERSION_STRING "$$eval(QT.$${MODULE}.VERSION)")
+@@ -146,11 +122,7 @@ macro(_populate_$${CMAKE_MODULE_NAME}_target_properties Configuration LIB_LOCATI
+       IsDebugAndRelease)
+     set_property(TARGET Qt5::$${CMAKE_MODULE_NAME} APPEND PROPERTY IMPORTED_CONFIGURATIONS ${Configuration})
+ 
+-!!IF isEmpty(CMAKE_DLL_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_DLL_DIR}${LIB_LOCATION}\")
+-!!ELSE
+     set(imported_location \"$${CMAKE_DLL_DIR}${LIB_LOCATION}\")
+-!!ENDIF
+     _qt5_$${CMAKE_MODULE_NAME}_check_file_exists(${imported_location})
+     set(_deps
+         ${_Qt5$${CMAKE_MODULE_NAME}_LIB_DEPENDENCIES}
+@@ -210,11 +182,7 @@ macro(_populate_$${CMAKE_MODULE_NAME}_target_properties Configuration LIB_LOCATI
+ !!ENDIF
+ 
+ !!IF !isEmpty(CMAKE_WINDOWS_BUILD)
+-!!IF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-    set(imported_implib \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}${IMPLIB_LOCATION}\")
+-!!ELSE
+     set(imported_implib \"IMPORTED_IMPLIB_${Configuration}\" \"$${CMAKE_LIB_DIR}${IMPLIB_LOCATION}\")
+-!!ENDIF
+     _qt5_$${CMAKE_MODULE_NAME}_check_file_exists(${imported_implib})
+     if(NOT \"${IMPLIB_LOCATION}\" STREQUAL \"\")
+         set_target_properties(Qt5::$${CMAKE_MODULE_NAME} PROPERTIES
+@@ -230,24 +198,13 @@ if (NOT TARGET Qt5::$${CMAKE_MODULE_NAME})
+ !!IF !no_module_headers
+ !!IF !isEmpty(CMAKE_BUILD_IS_FRAMEWORK)
+     set(_Qt5$${CMAKE_MODULE_NAME}_OWN_INCLUDE_DIRS
+-      \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_QT_STEM}.framework\"
+-      \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_QT_STEM}.framework/Headers\"
++      \"$${CMAKE_LIB_DIR}$${CMAKE_QT_STEM}.framework\"
++      \"$${CMAKE_LIB_DIR}$${CMAKE_QT_STEM}.framework/Headers\"
+     )
+ !!IF isEmpty(CMAKE_NO_PRIVATE_INCLUDES)
+     set(Qt5$${CMAKE_MODULE_NAME}_PRIVATE_INCLUDE_DIRS
+-        \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_QT_STEM}.framework/Versions/$$section(VERSION, ., 0, 0)/Headers/$$VERSION/\"
+-        \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_QT_STEM}.framework/Versions/$$section(VERSION, ., 0, 0)/Headers/$$VERSION/$${MODULE_INCNAME}\"
+-    )
+-!!ELSE
+-    set(Qt5$${CMAKE_MODULE_NAME}_PRIVATE_INCLUDE_DIRS \"\")
+-!!ENDIF
+-!!ELSE
+-!!IF isEmpty(CMAKE_INCLUDE_DIR_IS_ABSOLUTE)
+-    set(_Qt5$${CMAKE_MODULE_NAME}_OWN_INCLUDE_DIRS \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$$CMAKE_INCLUDE_DIR\" \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_INCLUDE_DIR}$${MODULE_INCNAME}\")
+-!!IF isEmpty(CMAKE_NO_PRIVATE_INCLUDES)
+-    set(Qt5$${CMAKE_MODULE_NAME}_PRIVATE_INCLUDE_DIRS
+-        \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_INCLUDE_DIR}$${MODULE_INCNAME}/$$VERSION\"
+-        \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_INCLUDE_DIR}$${MODULE_INCNAME}/$$VERSION/$${MODULE_INCNAME}\"
++      \"$${CMAKE_LIB_DIR}$${CMAKE_QT_STEM}.framework/Versions/$$section(VERSION, .,0, 0)/Headers/$$VERSION/\"
++      \"$${CMAKE_LIB_DIR}$${CMAKE_QT_STEM}.framework/Versions/$$section(VERSION, .,0, 0)/Headers/$$VERSION/$${MODULE_INCNAME}\"
+     )
+ !!ELSE
+     set(Qt5$${CMAKE_MODULE_NAME}_PRIVATE_INCLUDE_DIRS \"\")
+@@ -263,7 +220,6 @@ if (NOT TARGET Qt5::$${CMAKE_MODULE_NAME})
+     set(Qt5$${CMAKE_MODULE_NAME}_PRIVATE_INCLUDE_DIRS \"\")
+ !!ENDIF
+ !!ENDIF
+-!!ENDIF
+ !!IF !isEmpty(CMAKE_ADD_SOURCE_INCLUDE_DIRS)
+     include(\"${CMAKE_CURRENT_LIST_DIR}/ExtraSourceIncludes.cmake\" OPTIONAL)
+ !!ENDIF
+@@ -465,25 +421,13 @@ if (NOT TARGET Qt5::$${CMAKE_MODULE_NAME})
+ !!IF !isEmpty(CMAKE_FIND_OTHER_LIBRARY_BUILD)
+ !!IF isEmpty(CMAKE_DEBUG_TYPE)
+ !!IF !isEmpty(CMAKE_STATIC_WINDOWS_BUILD)
+-!!IF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-    if (EXISTS \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_IMPLIB_FILE_LOCATION_DEBUG}\" )
+-!!ELSE // CMAKE_LIB_DIR_IS_ABSOLUTE
+     if (EXISTS \"$${CMAKE_IMPLIB_FILE_LOCATION_DEBUG}\" )
+-!!ENDIF // CMAKE_LIB_DIR_IS_ABSOLUTE
+         _populate_$${CMAKE_MODULE_NAME}_target_properties(DEBUG \"$${CMAKE_IMPLIB_FILE_LOCATION_DEBUG}\" \"\" $${CMAKE_DEBUG_AND_RELEASE})
+ !!ELSE // CMAKE_STATIC_WINDOWS_BUILD
+     if (EXISTS
+-!!IF isEmpty(CMAKE_DLL_DIR_IS_ABSOLUTE)
+-        \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_DLL_DIR}$${CMAKE_LIB_FILE_LOCATION_DEBUG}\"
+-!!ELSE
+         \"$${CMAKE_LIB_FILE_LOCATION_DEBUG}\"
+-!!ENDIF
+       AND EXISTS
+-!!IF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-        \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_IMPLIB_FILE_LOCATION_DEBUG}\" )
+-!!ELSE
+         \"$${CMAKE_IMPLIB_FILE_LOCATION_DEBUG}\" )
+-!!ENDIF
+         _populate_$${CMAKE_MODULE_NAME}_target_properties(DEBUG \"$${CMAKE_LIB_FILE_LOCATION_DEBUG}\" \"$${CMAKE_IMPLIB_FILE_LOCATION_DEBUG}\" $${CMAKE_DEBUG_AND_RELEASE})
+ !!ENDIF // CMAKE_STATIC_WINDOWS_BUILD
+     endif()
+@@ -502,25 +446,13 @@ if (NOT TARGET Qt5::$${CMAKE_MODULE_NAME})
+ !!IF !isEmpty(CMAKE_FIND_OTHER_LIBRARY_BUILD)
+ !!IF isEmpty(CMAKE_RELEASE_TYPE)
+ !!IF !isEmpty(CMAKE_STATIC_WINDOWS_BUILD)
+-!!IF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-    if (EXISTS \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_IMPLIB_FILE_LOCATION_RELEASE}\" )
+-!!ELSE // CMAKE_LIB_DIR_IS_ABSOLUTE
+     if (EXISTS \"$${CMAKE_IMPLIB_FILE_LOCATION_RELEASE}\" )
+-!!ENDIF // CMAKE_LIB_DIR_IS_ABSOLUTE
+         _populate_$${CMAKE_MODULE_NAME}_target_properties(RELEASE \"$${CMAKE_IMPLIB_FILE_LOCATION_RELEASE}\" \"\" $${CMAKE_DEBUG_AND_RELEASE})
+ !!ELSE // CMAKE_STATIC_WINDOWS_BUILD
+     if (EXISTS
+-!!IF isEmpty(CMAKE_DLL_DIR_IS_ABSOLUTE)
+-        \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_DLL_DIR}$${CMAKE_LIB_FILE_LOCATION_RELEASE}\"
+-!!ELSE
+         \"$${CMAKE_LIB_FILE_LOCATION_RELEASE}\"
+-!!ENDIF
+       AND EXISTS
+-!!IF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-        \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_IMPLIB_FILE_LOCATION_RELEASE}\" )
+-!!ELSE
+         \"$${CMAKE_IMPLIB_FILE_LOCATION_RELEASE}\" )
+-!!ENDIF
+         _populate_$${CMAKE_MODULE_NAME}_target_properties(RELEASE \"$${CMAKE_LIB_FILE_LOCATION_RELEASE}\" \"$${CMAKE_IMPLIB_FILE_LOCATION_RELEASE}\" $${CMAKE_DEBUG_AND_RELEASE})
+ !!ENDIF // CMAKE_STATIC_WINDOWS_BUILD
+     endif()
+@@ -542,11 +474,7 @@ if (NOT TARGET Qt5::$${CMAKE_MODULE_NAME})
+           IsDebugAndRelease)
+         set_property(TARGET Qt5::${Plugin} APPEND PROPERTY IMPORTED_CONFIGURATIONS ${Configuration})
+ 
+-!!IF isEmpty(CMAKE_PLUGIN_DIR_IS_ABSOLUTE)
+-        set(imported_location \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$${CMAKE_PLUGIN_DIR}${PLUGIN_LOCATION}\")
+-!!ELSE
+         set(imported_location \"$${CMAKE_PLUGIN_DIR}${PLUGIN_LOCATION}\")
+-!!ENDIF
+         _qt5_$${CMAKE_MODULE_NAME}_check_file_exists(${imported_location})
+         set_target_properties(Qt5::${Plugin} PROPERTIES
+             \"IMPORTED_LOCATION_${Configuration}\" ${imported_location}
+diff --git a/mkspecs/features/qml_module.prf b/mkspecs/features/qml_module.prf
+index c0b50416c9..cabe39b22e 100644
+--- a/mkspecs/features/qml_module.prf
++++ b/mkspecs/features/qml_module.prf
+@@ -51,7 +51,7 @@ builtin_resources {
+ # Install rules
+ qmldir.base = $$qmldir_path
+ qmldir.files = $$qmldir_file
+-qmldir.path = $$[QT_INSTALL_QML]/$$TARGETPATH
++qmldir.path = $$NIX_OUTPUT_QML/$$TARGETPATH
+ 
+ qmlfiles.base = $$_PRO_FILE_PWD_
+ qmlfiles.files = $$fq_aux_qml_files
+diff --git a/mkspecs/features/qml_plugin.prf b/mkspecs/features/qml_plugin.prf
+index f1c5658b04..029595e721 100644
+--- a/mkspecs/features/qml_plugin.prf
++++ b/mkspecs/features/qml_plugin.prf
+@@ -50,7 +50,7 @@ load(qt_build_paths)
+ 
+ DESTDIR = $$MODULE_BASE_OUTDIR/qml/$$TARGETPATH
+ 
+-target.path = $$[QT_INSTALL_QML]/$$TARGETPATH
++target.path = $$NIX_OUTPUT_QML/$$TARGETPATH
+ INSTALLS += target
+ 
+ # Some final setup
+diff --git a/mkspecs/features/qt_app.prf b/mkspecs/features/qt_app.prf
+index 8354f30eea..62028fef8e 100644
+--- a/mkspecs/features/qt_app.prf
++++ b/mkspecs/features/qt_app.prf
+@@ -30,7 +30,7 @@ host_build:force_bootstrap {
+     target.path = $$[QT_HOST_BINS]
+ } else {
+     !build_pass:qtConfig(debug_and_release): CONFIG += release
+-    target.path = $$[QT_INSTALL_BINS]
++    target.path = $$NIX_OUTPUT_BIN/bin
+     CONFIG += relative_qt_rpath  # Qt's tools and apps should be relocatable
+ }
+ INSTALLS += target
+diff --git a/mkspecs/features/qt_build_paths.prf b/mkspecs/features/qt_build_paths.prf
+index 3bb3823a8e..655b7b7db8 100644
+--- a/mkspecs/features/qt_build_paths.prf
++++ b/mkspecs/features/qt_build_paths.prf
+@@ -24,6 +24,6 @@ exists($$MODULE_BASE_INDIR/.git): \
+ !force_independent {
+     # If the module is not built independently, everything ends up in qtbase.
+     # This is the case in non-prefix builds, except for selected modules.
+-    MODULE_BASE_OUTDIR = $$[QT_HOST_PREFIX]
+-    MODULE_QMAKE_OUTDIR = $$[QT_HOST_PREFIX]
++    MODULE_BASE_OUTDIR = $$NIX_OUTPUT_OUT
++    MODULE_QMAKE_OUTDIR = $$NIX_OUTPUT_OUT
+ }
+diff --git a/mkspecs/features/qt_docs.prf b/mkspecs/features/qt_docs.prf
+index 095bf15dac..4cc977bea5 100644
+--- a/mkspecs/features/qt_docs.prf
++++ b/mkspecs/features/qt_docs.prf
+@@ -65,7 +65,7 @@ QMAKE_DOCS_OUTPUTDIR = $$QMAKE_DOCS_BASE_OUTDIR/$$QMAKE_DOCS_TARGETDIR
+ 
+ QDOC += -outputdir $$shell_quote($$QMAKE_DOCS_OUTPUTDIR)
+ !build_online_docs: \
+-    QDOC += -installdir $$shell_quote($$[QT_INSTALL_DOCS])
++    QDOC += -installdir $$shell_quote($$NIX_OUTPUT_DOC)
+ PREP_DOC_INDEXES =
+ DOC_INDEXES =
+ !isEmpty(QTREPOS) {
+@@ -84,8 +84,8 @@ DOC_INDEXES =
+         DOC_INDEXES += -indexdir $$shell_quote($$qrep/doc)
+ } else {
+     prepare_docs: \
+-        PREP_DOC_INDEXES += -indexdir $$shell_quote($$[QT_INSTALL_DOCS/get])
+-    DOC_INDEXES += -indexdir $$shell_quote($$[QT_INSTALL_DOCS/get])
++        PREP_DOC_INDEXES += -indexdir $$shell_quote($$NIX_OUTPUT_DOC)
++    DOC_INDEXES += -indexdir $$shell_quote($$NIX_OUTPUT_DOC)
+ }
+ 
+ qtattributionsscanner.target = qtattributionsscanner
+@@ -108,12 +108,12 @@ prepare_docs {
+     qch_docs.commands = $$QHELPGENERATOR $$shell_quote($$QMAKE_DOCS_OUTPUTDIR/$${QMAKE_DOCS_TARGET}.qhp) -o $$shell_quote($$QMAKE_DOCS_BASE_OUTDIR/$${QMAKE_DOCS_TARGET}.qch)
+ 
+     inst_html_docs.files = $$QMAKE_DOCS_OUTPUTDIR
+-    inst_html_docs.path = $$[QT_INSTALL_DOCS]
++    inst_html_docs.path = $$NIX_OUTPUT_DOC
+     inst_html_docs.CONFIG += no_check_exist directory no_default_install no_build
+     INSTALLS += inst_html_docs
+ 
+     inst_qch_docs.files = $$QMAKE_DOCS_BASE_OUTDIR/$${QMAKE_DOCS_TARGET}.qch
+-    inst_qch_docs.path = $$[QT_INSTALL_DOCS]
++    inst_qch_docs.path = $$NIX_OUTPUT_DOC
+     inst_qch_docs.CONFIG += no_check_exist no_default_install no_build
+     INSTALLS += inst_qch_docs
+ 
+diff --git a/mkspecs/features/qt_example_installs.prf b/mkspecs/features/qt_example_installs.prf
+index 72b47bce27..d59e949e78 100644
+--- a/mkspecs/features/qt_example_installs.prf
++++ b/mkspecs/features/qt_example_installs.prf
+@@ -90,7 +90,7 @@ sourcefiles += \
+     $$SOURCES $$HEADERS $$FORMS $$RESOURCES $$TRANSLATIONS \
+     $$DBUS_ADAPTORS $$DBUS_INTERFACES
+ addInstallFiles(sources.files, $$sourcefiles)
+-sources.path = $$[QT_INSTALL_EXAMPLES]/$$probase
++sources.path = $$NIX_OUTPUT_DEV/share/examples/$$probase
+ INSTALLS += sources
+ 
+ check_examples {
+diff --git a/mkspecs/features/qt_functions.prf b/mkspecs/features/qt_functions.prf
+index 7777e615bd..abeb03a663 100644
+--- a/mkspecs/features/qt_functions.prf
++++ b/mkspecs/features/qt_functions.prf
+@@ -87,7 +87,7 @@ defineTest(qtHaveModule) {
+ defineTest(qtPrepareTool) {
+     cmd = $$eval(QT_TOOL.$${2}.binary)
+     isEmpty(cmd) {
+-        cmd = $$[QT_HOST_BINS]/$$2
++        cmd = $$system("command -v $$2")
+         exists($${cmd}.pl) {
+             $${1}_EXE = $${cmd}.pl
+             cmd = perl -w $$system_path($${cmd}.pl)
+diff --git a/mkspecs/features/qt_installs.prf b/mkspecs/features/qt_installs.prf
+index 1ebca17366..a8f958eae8 100644
+--- a/mkspecs/features/qt_installs.prf
++++ b/mkspecs/features/qt_installs.prf
+@@ -12,16 +12,10 @@
+ #library
+ !qt_no_install_library {
+     win32 {
+-       host_build: \
+-           dlltarget.path = $$[QT_HOST_BINS]
+-       else: \
+-           dlltarget.path = $$[QT_INSTALL_BINS]
++       dlltarget.path = $$NIX_OUTPUT_BIN/bin
+        INSTALLS += dlltarget
+     }
+-    host_build: \
+-        target.path = $$[QT_HOST_LIBS]
+-    else: \
+-        target.path = $$[QT_INSTALL_LIBS]
++    target.path = $$NIX_OUTPUT_OUT/lib
+     !static: target.CONFIG = no_dll
+     INSTALLS += target
+ }
+@@ -29,35 +23,35 @@
+ #headers
+ qt_install_headers {
+     gen_headers.files = $$SYNCQT.GENERATED_HEADER_FILES
+-    gen_headers.path = $$[QT_INSTALL_HEADERS]/$$MODULE_INCNAME
++    gen_headers.path = $$NIX_OUTPUT_DEV/include/$$MODULE_INCNAME
+     INSTALLS += gen_headers
+ 
+     targ_headers.files = $$SYNCQT.HEADER_FILES $$SYNCQT.INJECTED_HEADER_FILES
+-    targ_headers.path = $$[QT_INSTALL_HEADERS]/$$MODULE_INCNAME
++    targ_headers.path = $$NIX_OUTPUT_DEV/include/$$MODULE_INCNAME
+     INSTALLS += targ_headers
+ 
+     private_headers.files = $$SYNCQT.PRIVATE_HEADER_FILES $$SYNCQT.INJECTED_PRIVATE_HEADER_FILES
+-    private_headers.path = $$[QT_INSTALL_HEADERS]/$$MODULE_INCNAME/$$VERSION/$$MODULE_INCNAME/private
++    private_headers.path = $$NIX_OUTPUT_DEV/include/$$MODULE_INCNAME/$$VERSION/$$MODULE_INCNAME/private
+     generated_privates: \
+         private_headers.CONFIG += no_check_exist
+     INSTALLS += private_headers
+ 
+     qpa_headers.files = $$SYNCQT.QPA_HEADER_FILES
+-    qpa_headers.path = $$[QT_INSTALL_HEADERS]/$$MODULE_INCNAME/$$VERSION/$$MODULE_INCNAME/qpa
++    qpa_headers.path = $$NIX_OUTPUT_DEV/include/$$MODULE_INCNAME/$$VERSION/$$MODULE_INCNAME/qpa
+     INSTALLS += qpa_headers
+ }
+ 
+ #module
+ qt_install_module {
+     !isEmpty(MODULE_PRI) {
+-        pritarget.path = $$[QT_HOST_DATA]/mkspecs/modules
++        pritarget.path = $$NIX_OUTPUT_DEV/mkspecs/modules
+         pritarget.files = $$MODULE_PRI
+         INSTALLS += pritarget
+     } else: isEmpty(MODULE_PRIVATE_PRI) {
+         warning("Project $$basename(_PRO_FILE_) is a module, but has not defined MODULE_PRI, which is required for Qt to expose the module to other projects.")
+     }
+     !isEmpty(MODULE_PRIVATE_PRI) {
+-        privpritarget.path = $$[QT_HOST_DATA]/mkspecs/modules
++        privpritarget.path = $$NIX_OUTPUT_DEV/mkspecs/modules
+         privpritarget.files = $$MODULE_PRIVATE_PRI
+         INSTALLS += privpritarget
+     }
+diff --git a/mkspecs/features/qt_plugin.prf b/mkspecs/features/qt_plugin.prf
+index 573d717eea..024c624cb6 100644
+--- a/mkspecs/features/qt_plugin.prf
++++ b/mkspecs/features/qt_plugin.prf
+@@ -88,7 +88,7 @@ CONFIG(static, static|shared)|prefix_build {
+     }
+ }
+ 
+-target.path = $$[QT_INSTALL_PLUGINS]/$$PLUGIN_TYPE
++target.path = $$NIX_OUTPUT_PLUGIN/$$PLUGIN_TYPE
+ INSTALLS += target
+ 
+ qt_libinfix_plugins: TARGET = $$TARGET$$QT_LIBINFIX
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0004-qtbase-replace-libdir.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0004-qtbase-replace-libdir.patch
new file mode 100644
index 0000000000000..86ea2e75d9be4
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0004-qtbase-replace-libdir.patch
@@ -0,0 +1,68 @@
+From 1cae0c31c9849615190ee175ebf929b3aca13fe0 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Milan=20P=C3=A4ssler?= <me@pbb.lc>
+Date: Sat, 4 Apr 2020 00:27:41 +0200
+Subject: [PATCH 04/10] qtbase-replace-libdir
+
+---
+ mkspecs/features/qt_common.prf | 20 ++------------------
+ mkspecs/features/qt_module.prf |  5 +----
+ 2 files changed, 3 insertions(+), 22 deletions(-)
+
+diff --git a/mkspecs/features/qt_common.prf b/mkspecs/features/qt_common.prf
+index c24f2c6062..0d72ce7286 100644
+--- a/mkspecs/features/qt_common.prf
++++ b/mkspecs/features/qt_common.prf
+@@ -31,32 +31,16 @@ contains(TEMPLATE, .*lib) {
+         rplbase = $$dirname(_QMAKE_SUPER_CACHE_)/[^/][^/]*
+     else: \
+         rplbase = $$MODULE_BASE_OUTDIR
+-    host_build {
+-        qqt_libdir = \$\$\$\$[QT_HOST_LIBS]
+-        qt_libdir = $$[QT_HOST_LIBS]
+-    } else {
+-        qqt_libdir = \$\$\$\$[QT_INSTALL_LIBS]
+-        qt_libdir = $$[QT_INSTALL_LIBS]
+-    }
++    qt_libdir = $$NIX_OUTPUT_OUT/lib
+     contains(QMAKE_DEFAULT_LIBDIRS, $$qt_libdir) {
+-        lib_replace0.match = $$rplbase/lib/
+-        lib_replace0.replace = $$qqt_libdir/
+-        lib_replace0.CONFIG = path
+-        QMAKE_PRL_INSTALL_REPLACE += lib_replace0
+         lib_replace.match = "[^ ']*$$rplbase/lib"
+         lib_replace.replace =
+     } else {
+         lib_replace.match = $$rplbase/lib
+-        lib_replace.replace = $$qqt_libdir
++        lib_replace.replace = $$qt_libdir
+     }
+     lib_replace.CONFIG = path
+     QMAKE_PRL_INSTALL_REPLACE += lib_replace
+-    !equals(qt_libdir, $$rplbase/lib) {
+-        qtlibdir_replace.match = $$qt_libdir
+-        qtlibdir_replace.replace = $$qqt_libdir
+-        qtlibdir_replace.CONFIG = path
+-        QMAKE_PRL_INSTALL_REPLACE += qtlibdir_replace
+-    }
+ }
+ 
+ # The remainder of this file must not apply to host tools/libraries,
+diff --git a/mkspecs/features/qt_module.prf b/mkspecs/features/qt_module.prf
+index 828a9621b9..b9e5d35026 100644
+--- a/mkspecs/features/qt_module.prf
++++ b/mkspecs/features/qt_module.prf
+@@ -305,10 +305,7 @@ load(qt_targets)
+ }
+ !lib_bundle:unix {
+     CONFIG += create_libtool
+-    host_build: \
+-        QMAKE_LIBTOOL_LIBDIR = $$[QT_HOST_LIBS]
+-    else: \
+-        QMAKE_LIBTOOL_LIBDIR = "=$$[QT_INSTALL_LIBS/raw]"
++    QMAKE_LIBTOOL_LIBDIR = $$NIX_OUTPUT_OUT/lib
+     !isEmpty(lib_replace0.match) {
+         ltlib_replace0.match = $$lib_replace0.match
+         ltlib_replace0.replace = $$QMAKE_LIBTOOL_LIBDIR/
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0005-qtbase-cmake.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0005-qtbase-cmake.patch
new file mode 100644
index 0000000000000..85a7295634172
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0005-qtbase-cmake.patch
@@ -0,0 +1,194 @@
+From 7e93d1330e1f8c8cd68334201ad100b8c05c9ab5 Mon Sep 17 00:00:00 2001
+From: Thomas Tuegel <ttuegel@mailbox.org>
+Date: Tue, 17 Sep 2019 05:34:28 -0500
+Subject: [PATCH 05/10] qtbase-cmake
+
+---
+ mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in  |  2 +-
+ mkspecs/features/data/cmake/Qt5PluginTarget.cmake.in |  4 ++--
+ src/corelib/Qt5CoreConfigExtras.cmake.in             | 10 +++++-----
+ src/corelib/Qt5CoreConfigExtrasMkspecDir.cmake.in    |  2 +-
+ .../Qt5CoreConfigExtrasMkspecDirForInstall.cmake.in  |  2 +-
+ src/dbus/Qt5DBusConfigExtras.cmake.in                | 12 ++----------
+ src/gui/Qt5GuiConfigExtras.cmake.in                  |  6 +++---
+ src/widgets/Qt5WidgetsConfigExtras.cmake.in          |  2 +-
+ 8 files changed, 16 insertions(+), 24 deletions(-)
+
+diff --git a/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in b/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
+index 87679b7e68..57060e6470 100644
+--- a/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
++++ b/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
+@@ -474,7 +474,7 @@ if (NOT TARGET Qt5::$${CMAKE_MODULE_NAME})
+           IsDebugAndRelease)
+         set_property(TARGET Qt5::${Plugin} APPEND PROPERTY IMPORTED_CONFIGURATIONS ${Configuration})
+ 
+-        set(imported_location \"$${CMAKE_PLUGIN_DIR}${PLUGIN_LOCATION}\")
++        set(imported_location \"${PLUGIN_LOCATION}\")
+         _qt5_$${CMAKE_MODULE_NAME}_check_file_exists(${imported_location})
+         set_target_properties(Qt5::${Plugin} PROPERTIES
+             \"IMPORTED_LOCATION_${Configuration}\" ${imported_location}
+diff --git a/mkspecs/features/data/cmake/Qt5PluginTarget.cmake.in b/mkspecs/features/data/cmake/Qt5PluginTarget.cmake.in
+index 7b70cfed09..e700cfa539 100644
+--- a/mkspecs/features/data/cmake/Qt5PluginTarget.cmake.in
++++ b/mkspecs/features/data/cmake/Qt5PluginTarget.cmake.in
+@@ -53,10 +53,10 @@ set_property(TARGET Qt5::$$CMAKE_PLUGIN_NAME PROPERTY INTERFACE_SOURCES
+ !!ENDIF
+ 
+ !!IF !isEmpty(CMAKE_RELEASE_TYPE)
+-_populate_$${CMAKE_MODULE_NAME}_plugin_properties($$CMAKE_PLUGIN_NAME RELEASE \"$${CMAKE_PLUGIN_LOCATION_RELEASE}\" $${CMAKE_DEBUG_AND_RELEASE})
++_populate_$${CMAKE_MODULE_NAME}_plugin_properties($$CMAKE_PLUGIN_NAME RELEASE \"$${CMAKE_PLUGIN_DIR}$${CMAKE_PLUGIN_LOCATION_RELEASE}\" $${CMAKE_DEBUG_AND_RELEASE})
+ !!ENDIF
+ !!IF !isEmpty(CMAKE_DEBUG_TYPE)
+-_populate_$${CMAKE_MODULE_NAME}_plugin_properties($$CMAKE_PLUGIN_NAME DEBUG \"$${CMAKE_PLUGIN_LOCATION_DEBUG}\" $${CMAKE_DEBUG_AND_RELEASE})
++_populate_$${CMAKE_MODULE_NAME}_plugin_properties($$CMAKE_PLUGIN_NAME DEBUG \"$${CMAKE_PLUGIN_DIR}$${CMAKE_PLUGIN_LOCATION_DEBUG}\" $${CMAKE_DEBUG_AND_RELEASE})
+ !!ENDIF
+ 
+ list(APPEND Qt5$${CMAKE_MODULE_NAME}_PLUGINS Qt5::$$CMAKE_PLUGIN_NAME)
+diff --git a/src/corelib/Qt5CoreConfigExtras.cmake.in b/src/corelib/Qt5CoreConfigExtras.cmake.in
+index 9b672327ef..319ba94d6d 100644
+--- a/src/corelib/Qt5CoreConfigExtras.cmake.in
++++ b/src/corelib/Qt5CoreConfigExtras.cmake.in
+@@ -3,7 +3,7 @@ if (NOT TARGET Qt5::qmake)
+     add_executable(Qt5::qmake IMPORTED)
+ 
+ !!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5Core_install_prefix}/$${CMAKE_BIN_DIR}qmake$$CMAKE_BIN_SUFFIX\")
++    set(imported_location \"$$NIX_OUTPUT_DEV/$${CMAKE_BIN_DIR}qmake$$CMAKE_BIN_SUFFIX\")
+ !!ELSE
+     set(imported_location \"$${CMAKE_BIN_DIR}qmake$$CMAKE_BIN_SUFFIX\")
+ !!ENDIF
+@@ -18,7 +18,7 @@ if (NOT TARGET Qt5::moc)
+     add_executable(Qt5::moc IMPORTED)
+ 
+ !!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5Core_install_prefix}/$${CMAKE_BIN_DIR}moc$$CMAKE_BIN_SUFFIX\")
++    set(imported_location \"$$NIX_OUTPUT_DEV/$${CMAKE_BIN_DIR}moc$$CMAKE_BIN_SUFFIX\")
+ !!ELSE
+     set(imported_location \"$${CMAKE_BIN_DIR}moc$$CMAKE_BIN_SUFFIX\")
+ !!ENDIF
+@@ -35,7 +35,7 @@ if (NOT TARGET Qt5::rcc)
+     add_executable(Qt5::rcc IMPORTED)
+ 
+ !!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5Core_install_prefix}/$${CMAKE_BIN_DIR}rcc$$CMAKE_BIN_SUFFIX\")
++    set(imported_location \"$$NIX_OUTPUT_DEV/$${CMAKE_BIN_DIR}rcc$$CMAKE_BIN_SUFFIX\")
+ !!ELSE
+     set(imported_location \"$${CMAKE_BIN_DIR}rcc$$CMAKE_BIN_SUFFIX\")
+ !!ENDIF
+@@ -118,7 +118,7 @@ if (NOT TARGET Qt5::WinMain)
+ !!IF !isEmpty(CMAKE_RELEASE_TYPE)
+     set_property(TARGET Qt5::WinMain APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
+ !!IF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5Core_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_WINMAIN_FILE_LOCATION_RELEASE}\")
++    set(imported_location \"$$NIX_OUTPUT_DEV/$${CMAKE_LIB_DIR}$${CMAKE_WINMAIN_FILE_LOCATION_RELEASE}\")
+ !!ELSE
+     set(imported_location \"$${CMAKE_LIB_DIR}$${CMAKE_WINMAIN_FILE_LOCATION_RELEASE}\")
+ !!ENDIF
+@@ -132,7 +132,7 @@ if (NOT TARGET Qt5::WinMain)
+     set_property(TARGET Qt5::WinMain APPEND PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
+ 
+ !!IF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5Core_install_prefix}/$${CMAKE_LIB_DIR}$${CMAKE_WINMAIN_FILE_LOCATION_DEBUG}\")
++    set(imported_location \"$$NIX_OUTPUT_DEV/$${CMAKE_LIB_DIR}$${CMAKE_WINMAIN_FILE_LOCATION_DEBUG}\")
+ !!ELSE
+     set(imported_location \"$${CMAKE_LIB_DIR}$${CMAKE_WINMAIN_FILE_LOCATION_DEBUG}\")
+ !!ENDIF
+diff --git a/src/corelib/Qt5CoreConfigExtrasMkspecDir.cmake.in b/src/corelib/Qt5CoreConfigExtrasMkspecDir.cmake.in
+index c357237d0e..6f0c75de3c 100644
+--- a/src/corelib/Qt5CoreConfigExtrasMkspecDir.cmake.in
++++ b/src/corelib/Qt5CoreConfigExtrasMkspecDir.cmake.in
+@@ -1,6 +1,6 @@
+ 
+ !!IF isEmpty(CMAKE_HOST_DATA_DIR_IS_ABSOLUTE)
+-set(_qt5_corelib_extra_includes \"${_qt5Core_install_prefix}/$${CMAKE_HOST_DATA_DIR}/mkspecs/$${CMAKE_MKSPEC}\")
++set(_qt5_corelib_extra_includes \"$$NIX_OUTPUT_DEV/$${CMAKE_HOST_DATA_DIR}/mkspecs/$${CMAKE_MKSPEC}\")
+ !!ELSE
+ set(_qt5_corelib_extra_includes \"$${CMAKE_HOST_DATA_DIR}mkspecs/$${CMAKE_MKSPEC}\")
+ !!ENDIF
+diff --git a/src/corelib/Qt5CoreConfigExtrasMkspecDirForInstall.cmake.in b/src/corelib/Qt5CoreConfigExtrasMkspecDirForInstall.cmake.in
+index 706304cf34..546420f6ad 100644
+--- a/src/corelib/Qt5CoreConfigExtrasMkspecDirForInstall.cmake.in
++++ b/src/corelib/Qt5CoreConfigExtrasMkspecDirForInstall.cmake.in
+@@ -1,6 +1,6 @@
+ 
+ !!IF isEmpty(CMAKE_INSTALL_DATA_DIR_IS_ABSOLUTE)
+-set(_qt5_corelib_extra_includes \"${_qt5Core_install_prefix}/$${CMAKE_INSTALL_DATA_DIR}/mkspecs/$${CMAKE_MKSPEC}\")
++set(_qt5_corelib_extra_includes \"$$NIX_OUTPUT_DEV/$${CMAKE_INSTALL_DATA_DIR}/mkspecs/$${CMAKE_MKSPEC}\")
+ !!ELSE
+ set(_qt5_corelib_extra_includes \"$${CMAKE_INSTALL_DATA_DIR}mkspecs/$${CMAKE_MKSPEC}\")
+ !!ENDIF
+diff --git a/src/dbus/Qt5DBusConfigExtras.cmake.in b/src/dbus/Qt5DBusConfigExtras.cmake.in
+index 1d947159e2..b36865fc48 100644
+--- a/src/dbus/Qt5DBusConfigExtras.cmake.in
++++ b/src/dbus/Qt5DBusConfigExtras.cmake.in
+@@ -2,11 +2,7 @@
+ if (NOT TARGET Qt5::qdbuscpp2xml)
+     add_executable(Qt5::qdbuscpp2xml IMPORTED)
+ 
+-!!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5DBus_install_prefix}/$${CMAKE_BIN_DIR}qdbuscpp2xml$$CMAKE_BIN_SUFFIX\")
+-!!ELSE
+-    set(imported_location \"$${CMAKE_BIN_DIR}qdbuscpp2xml$$CMAKE_BIN_SUFFIX\")
+-!!ENDIF
++    set(imported_location \"$$NIX_OUTPUT_DEV/bin/qdbuscpp2xml$$CMAKE_BIN_SUFFIX\")
+     _qt5_DBus_check_file_exists(${imported_location})
+ 
+     set_target_properties(Qt5::qdbuscpp2xml PROPERTIES
+@@ -17,11 +13,7 @@ endif()
+ if (NOT TARGET Qt5::qdbusxml2cpp)
+     add_executable(Qt5::qdbusxml2cpp IMPORTED)
+ 
+-!!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5DBus_install_prefix}/$${CMAKE_BIN_DIR}qdbusxml2cpp$$CMAKE_BIN_SUFFIX\")
+-!!ELSE
+-    set(imported_location \"$${CMAKE_BIN_DIR}qdbusxml2cpp$$CMAKE_BIN_SUFFIX\")
+-!!ENDIF
++    set(imported_location \"$$NIX_OUTPUT_DEV/bin/qdbusxml2cpp$$CMAKE_BIN_SUFFIX\")
+     _qt5_DBus_check_file_exists(${imported_location})
+ 
+     set_target_properties(Qt5::qdbusxml2cpp PROPERTIES
+diff --git a/src/gui/Qt5GuiConfigExtras.cmake.in b/src/gui/Qt5GuiConfigExtras.cmake.in
+index 84dbbfebd4..8ad0720c5c 100644
+--- a/src/gui/Qt5GuiConfigExtras.cmake.in
++++ b/src/gui/Qt5GuiConfigExtras.cmake.in
+@@ -2,7 +2,7 @@
+ !!IF !isEmpty(CMAKE_ANGLE_EGL_DLL_RELEASE)
+ 
+ !!IF isEmpty(CMAKE_INCLUDE_DIR_IS_ABSOLUTE)
+-set(Qt5Gui_EGL_INCLUDE_DIRS \"${_qt5$${CMAKE_MODULE_NAME}_install_prefix}/$$CMAKE_INCLUDE_DIR/QtANGLE\")
++set(Qt5Gui_EGL_INCLUDE_DIRS \"$$NIX_OUTPUT_DEV/$$CMAKE_INCLUDE_DIR/QtANGLE\")
+ !!ELSE
+ set(Qt5Gui_EGL_INCLUDE_DIRS \"$$CMAKE_INCLUDE_DIR/QtANGLE\")
+ !!ENDIF
+@@ -17,13 +17,13 @@ macro(_populate_qt5gui_gl_target_properties TargetName Configuration LIB_LOCATIO
+     set_property(TARGET Qt5::${TargetName} APPEND PROPERTY IMPORTED_CONFIGURATIONS ${Configuration})
+ 
+ !!IF isEmpty(CMAKE_DLL_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5Gui_install_prefix}/$${CMAKE_DLL_DIR}${LIB_LOCATION}\")
++    set(imported_location \"$$NIX_OUTPUT_OUT/$${CMAKE_DLL_DIR}${LIB_LOCATION}\")
+ !!ELSE
+     set(imported_location \"$${CMAKE_DLL_DIR}${LIB_LOCATION}\")
+ !!ENDIF
+ 
+ !!IF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+-    set(imported_implib \"${_qt5Gui_install_prefix}/$${CMAKE_LIB_DIR}${IMPLIB_LOCATION}\")
++    set(imported_implib \"$$NIX_OUTPUT_OUT/$${CMAKE_LIB_DIR}${IMPLIB_LOCATION}\")
+ !!ELSE
+     set(imported_implib \"$${CMAKE_LIB_DIR}${IMPLIB_LOCATION}\")
+ !!ENDIF
+diff --git a/src/widgets/Qt5WidgetsConfigExtras.cmake.in b/src/widgets/Qt5WidgetsConfigExtras.cmake.in
+index 99d87e2e46..a4eab2aa72 100644
+--- a/src/widgets/Qt5WidgetsConfigExtras.cmake.in
++++ b/src/widgets/Qt5WidgetsConfigExtras.cmake.in
+@@ -3,7 +3,7 @@ if (NOT TARGET Qt5::uic)
+     add_executable(Qt5::uic IMPORTED)
+ 
+ !!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5Widgets_install_prefix}/$${CMAKE_BIN_DIR}uic$$CMAKE_BIN_SUFFIX\")
++    set(imported_location \"$$NIX_OUTPUT_DEV/$${CMAKE_BIN_DIR}uic$$CMAKE_BIN_SUFFIX\")
+ !!ELSE
+     set(imported_location \"$${CMAKE_BIN_DIR}uic$$CMAKE_BIN_SUFFIX\")
+ !!ENDIF
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0006-qtbase-gtk3.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0006-qtbase-gtk3.patch
new file mode 100644
index 0000000000000..6ce0e5d0c433c
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0006-qtbase-gtk3.patch
@@ -0,0 +1,48 @@
+From 1ad04525cdd342e3c8a750323fb3a61b93fee753 Mon Sep 17 00:00:00 2001
+From: Thomas Tuegel <ttuegel@mailbox.org>
+Date: Tue, 17 Sep 2019 05:35:33 -0500
+Subject: [PATCH 06/10] qtbase-gtk3
+
+---
+ src/plugins/platformthemes/gtk3/main.cpp | 17 ++++++++++++++++-
+ 1 file changed, 16 insertions(+), 1 deletion(-)
+
+diff --git a/src/plugins/platformthemes/gtk3/main.cpp b/src/plugins/platformthemes/gtk3/main.cpp
+index fb1c425d8e..bb8bab9795 100644
+--- a/src/plugins/platformthemes/gtk3/main.cpp
++++ b/src/plugins/platformthemes/gtk3/main.cpp
+@@ -39,6 +39,7 @@
+ 
+ #include <qpa/qplatformthemeplugin.h>
+ #include "qgtk3theme.h"
++#include <QFile>
+ 
+ QT_BEGIN_NAMESPACE
+ 
+@@ -54,8 +55,22 @@ public:
+ QPlatformTheme *QGtk3ThemePlugin::create(const QString &key, const QStringList &params)
+ {
+     Q_UNUSED(params);
+-    if (!key.compare(QLatin1String(QGtk3Theme::name), Qt::CaseInsensitive))
++    if (!key.compare(QLatin1String(QGtk3Theme::name), Qt::CaseInsensitive)) {
++
++#ifdef NIXPKGS_QGTK3_XDG_DATA_DIRS
++        QStringList XDG_DATA_DIRS = QFile::decodeName(qgetenv("XDG_DATA_DIRS")).split(':');
++        XDG_DATA_DIRS << QLatin1String(NIXPKGS_QGTK3_XDG_DATA_DIRS);
++        qputenv("XDG_DATA_DIRS", QFile::encodeName(XDG_DATA_DIRS.join(':')));
++#endif
++
++#ifdef NIXPKGS_QGTK3_GIO_EXTRA_MODULES
++        QStringList GIO_EXTRA_MODULES = QFile::decodeName(qgetenv("GIO_EXTRA_MODULES")).split(':');
++        GIO_EXTRA_MODULES << QLatin1String(NIXPKGS_QGTK3_GIO_EXTRA_MODULES);
++        qputenv("GIO_EXTRA_MODULES", QFile::encodeName(GIO_EXTRA_MODULES.join(':')));
++#endif
++
+         return new QGtk3Theme;
++    }
+ 
+     return 0;
+ }
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0007-qtbase-xcursor.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0007-qtbase-xcursor.patch
new file mode 100644
index 0000000000000..6a92a95283038
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0007-qtbase-xcursor.patch
@@ -0,0 +1,29 @@
+From cc953cc3f736fabef1f5c211964f30be719fb35e Mon Sep 17 00:00:00 2001
+From: Thomas Tuegel <ttuegel@mailbox.org>
+Date: Tue, 17 Sep 2019 05:35:58 -0500
+Subject: [PATCH 07/10] qtbase-xcursor
+
+---
+ src/plugins/platforms/xcb/qxcbcursor.cpp | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/plugins/platforms/xcb/qxcbcursor.cpp b/src/plugins/platforms/xcb/qxcbcursor.cpp
+index fbadab4d50..c83ce0af5b 100644
+--- a/src/plugins/platforms/xcb/qxcbcursor.cpp
++++ b/src/plugins/platforms/xcb/qxcbcursor.cpp
+@@ -317,10 +317,10 @@ QXcbCursor::QXcbCursor(QXcbConnection *conn, QXcbScreen *screen)
+ #if QT_CONFIG(xcb_xlib) && QT_CONFIG(library)
+     static bool function_ptrs_not_initialized = true;
+     if (function_ptrs_not_initialized) {
+-        QLibrary xcursorLib(QLatin1String("Xcursor"), 1);
++        QLibrary xcursorLib(QLatin1String(NIXPKGS_LIBXCURSOR), 1);
+         bool xcursorFound = xcursorLib.load();
+         if (!xcursorFound) { // try without the version number
+-            xcursorLib.setFileName(QLatin1String("Xcursor"));
++            xcursorLib.setFileName(QLatin1String(NIXPKGS_LIBXCURSOR));
+             xcursorFound = xcursorLib.load();
+         }
+         if (xcursorFound) {
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0008-qtbase-tzdir.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0008-qtbase-tzdir.patch
new file mode 100644
index 0000000000000..71653a0e36e0f
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0008-qtbase-tzdir.patch
@@ -0,0 +1,64 @@
+From 882343ea200fe28810bf217a820816affe885a39 Mon Sep 17 00:00:00 2001
+From: Thomas Tuegel <ttuegel@mailbox.org>
+Date: Tue, 17 Sep 2019 05:36:25 -0500
+Subject: [PATCH 08/10] qtbase-tzdir
+
+---
+ src/corelib/time/qtimezoneprivate_tz.cpp | 31 +++++++++++++++---------
+ 1 file changed, 19 insertions(+), 12 deletions(-)
+
+diff --git a/src/corelib/time/qtimezoneprivate_tz.cpp b/src/corelib/time/qtimezoneprivate_tz.cpp
+index 3c2695a789..e75735f88f 100644
+--- a/src/corelib/time/qtimezoneprivate_tz.cpp
++++ b/src/corelib/time/qtimezoneprivate_tz.cpp
+@@ -75,7 +75,11 @@ typedef QHash<QByteArray, QTzTimeZone> QTzTimeZoneHash;
+ // Parse zone.tab table, assume lists all installed zones, if not will need to read directories
+ static QTzTimeZoneHash loadTzTimeZones()
+ {
+-    QString path = QStringLiteral("/usr/share/zoneinfo/zone.tab");
++    // Try TZDIR first, in case we're running on NixOS.
++    QString path = QFile::decodeName(qgetenv("TZDIR")) + QStringLiteral("/zone.tab");
++    // Fallback to traditional paths in case we are not on NixOS.
++    if (!QFile::exists(path))
++        path = QStringLiteral("/usr/share/zoneinfo/zone.tab");
+     if (!QFile::exists(path))
+         path = QStringLiteral("/usr/lib/zoneinfo/zone.tab");
+ 
+@@ -658,20 +662,23 @@ void QTzTimeZonePrivate::init(const QByteArray &ianaId)
+         if (!tzif.open(QIODevice::ReadOnly))
+             return;
+     } else {
+-        // Open named tz, try modern path first, if fails try legacy path
+-        tzif.setFileName(QLatin1String("/usr/share/zoneinfo/") + QString::fromLocal8Bit(ianaId));
++        // Try TZDIR first, in case we're running on NixOS
++        tzif.setFileName(QFile::decodeName(qgetenv("TZDIR")) + QStringLiteral("/") + QString::fromLocal8Bit(ianaId));
+         if (!tzif.open(QIODevice::ReadOnly)) {
+-            tzif.setFileName(QLatin1String("/usr/lib/zoneinfo/") + QString::fromLocal8Bit(ianaId));
++            tzif.setFileName(QLatin1String("/usr/share/zoneinfo/") + QString::fromLocal8Bit(ianaId));
+             if (!tzif.open(QIODevice::ReadOnly)) {
+-                // ianaId may be a POSIX rule, taken from $TZ or /etc/TZ
+-                const QByteArray zoneInfo = ianaId.split(',').at(0);
+-                const char *begin = zoneInfo.constBegin();
+-                if (PosixZone::parse(begin, zoneInfo.constEnd()).hasValidOffset()
+-                    && (begin == zoneInfo.constEnd()
+-                        || PosixZone::parse(begin, zoneInfo.constEnd()).hasValidOffset())) {
+-                    m_id = m_posixRule = ianaId;
++                tzif.setFileName(QLatin1String("/usr/lib/zoneinfo/") + QString::fromLocal8Bit(ianaId));
++                if (!tzif.open(QIODevice::ReadOnly)) {
++                    // ianaId may be a POSIX rule, taken from $TZ or /etc/TZ
++                    const QByteArray zoneInfo = ianaId.split(',').at(0);
++                    const char *begin = zoneInfo.constBegin();
++                    if (PosixZone::parse(begin, zoneInfo.constEnd()).hasValidOffset()
++                        && (begin == zoneInfo.constEnd()
++                            || PosixZone::parse(begin, zoneInfo.constEnd()).hasValidOffset())) {
++                        m_id = m_posixRule = ianaId;
++                    }
++                    return;
+                 }
+-                return;
+             }
+         }
+     }
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0009-qtbase-qtpluginpath.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0009-qtbase-qtpluginpath.patch
new file mode 100644
index 0000000000000..009fe14838e7c
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0009-qtbase-qtpluginpath.patch
@@ -0,0 +1,19 @@
+--- qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp	2020-03-27 10:49:31.000000000 +0100
++++ qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp.patched	2020-05-09 15:03:03.968084088 +0200
+@@ -2691,6 +2691,16 @@
+         QStringList *app_libpaths = new QStringList;
+         coreappdata()->app_libpaths.reset(app_libpaths);
+
++        // Add library paths derived from PATH
++        const QStringList paths = QFile::decodeName(qgetenv("PATH")).split(':');
++        const QString plugindir = QStringLiteral("../" NIXPKGS_QT_PLUGIN_PREFIX);
++        for (const QString &path: paths) {
++            if (!path.isEmpty()) {
++                app_libpaths->append(QDir::cleanPath(path + QDir::separator() + plugindir));
++            }
++        }
++
++
+         auto setPathsFromEnv = [&](QString libPathEnv) {
+             if (!libPathEnv.isEmpty()) {
+                 QStringList paths = libPathEnv.split(QDir::listSeparator(), QString::SkipEmptyParts);
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0010-qtbase-assert.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0010-qtbase-assert.patch
new file mode 100644
index 0000000000000..e10f976073261
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0010-qtbase-assert.patch
@@ -0,0 +1,32 @@
+From c8893a4e0a1b46796e39b4a338358fdb45685cba Mon Sep 17 00:00:00 2001
+From: Thomas Tuegel <ttuegel@mailbox.org>
+Date: Tue, 17 Sep 2019 05:37:04 -0500
+Subject: [PATCH 09/10] qtbase-assert
+
+---
+ src/testlib/qtestassert.h | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/src/testlib/qtestassert.h b/src/testlib/qtestassert.h
+index 6498ea84ef..d821ced7fc 100644
+--- a/src/testlib/qtestassert.h
++++ b/src/testlib/qtestassert.h
+@@ -44,10 +44,13 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
+-
++#if defined(QT_NO_DEBUG) && !defined(QT_FORCE_ASSERTS)
++#define QTEST_ASSERT(cond) do { } while ((false) && (cond))
++#define QTEST_ASSERT_X(cond, where, what) do { } while ((false) && (cond))
++#else
+ #define QTEST_ASSERT(cond) do { if (!(cond)) qt_assert(#cond,__FILE__,__LINE__); } while (false)
+-
+ #define QTEST_ASSERT_X(cond, where, what) do { if (!(cond)) qt_assert_x(where, what,__FILE__,__LINE__); } while (false)
++#endif
+ 
+ QT_END_NAMESPACE
+ 
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0011-fix-header_module.patch b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0011-fix-header_module.patch
new file mode 100644
index 0000000000000..4358097dddf25
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtbase.patch.d/0011-fix-header_module.patch
@@ -0,0 +1,25 @@
+From 4c488fdb457e63924383fb7f8ad45bed3df49480 Mon Sep 17 00:00:00 2001
+From: Will Dietz <w@wdtz.org>
+Date: Mon, 30 Sep 2019 20:15:40 -0500
+Subject: [PATCH 10/10] fix header_module
+
+---
+ mkspecs/features/qt_module.prf | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/mkspecs/features/qt_module.prf b/mkspecs/features/qt_module.prf
+index 16b39031bc..1ac3d6fe59 100644
+--- a/mkspecs/features/qt_module.prf
++++ b/mkspecs/features/qt_module.prf
+@@ -84,7 +84,7 @@ header_module {
+         CONFIG  += qt_no_install_library
+ 
+     # Allow creation of .prl, .la and .pc files.
+-    target.path = $$[QT_INSTALL_LIBS]
++    target.path = $$NIX_OUTPUT_OUT/lib
+     target.CONFIG += dummy_install
+     INSTALLS    += target
+ } else {
+-- 
+2.25.1
+
diff --git a/pkgs/development/libraries/qt-5/5.14/qtdeclarative.patch b/pkgs/development/libraries/qt-5/5.14/qtdeclarative.patch
new file mode 100644
index 0000000000000..f2f4ee77354d3
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtdeclarative.patch
@@ -0,0 +1,13 @@
+diff --git a/tools/qmlcachegen/qmlcache.prf b/tools/qmlcachegen/qmlcache.prf
+index 537eaf62e..e21de58f6 100644
+--- a/tools/qmlcachegen/qmlcache.prf
++++ b/tools/qmlcachegen/qmlcache.prf
+@@ -26,7 +26,7 @@ defineReplace(qmlCacheOutputFileName) {
+ }
+ 
+ qmlcacheinst.base = $$QMLCACHE_DESTDIR
+-qmlcacheinst.path = $$[QT_INSTALL_QML]/$$TARGETPATH
++qmlcacheinst.path = $$NIX_OUTPUT_QML/$$TARGETPATH
+ qmlcacheinst.CONFIG = no_check_exist
+ 
+ qmlcachegen.input = CACHEGEN_FILES
diff --git a/pkgs/development/libraries/qt-5/5.14/qtscript.patch b/pkgs/development/libraries/qt-5/5.14/qtscript.patch
new file mode 100644
index 0000000000000..5508dec1280e3
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtscript.patch
@@ -0,0 +1,13 @@
+diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h b/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h
+index 1f6d25e..087c3fb 100644
+--- a/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h
++++ b/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h
+@@ -81,7 +81,7 @@
+ #include <pthread.h>
+ #elif PLATFORM(GTK)
+ #include <wtf/gtk/GOwnPtr.h>
+-typedef struct _GMutex GMutex;
++typedef union _GMutex GMutex;
+ typedef struct _GCond GCond;
+ #endif
+ 
diff --git a/pkgs/development/libraries/qt-5/5.14/qtserialport.patch b/pkgs/development/libraries/qt-5/5.14/qtserialport.patch
new file mode 100644
index 0000000000000..f25524e80bcfe
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtserialport.patch
@@ -0,0 +1,22 @@
+diff --git a/src/serialport/qtudev_p.h b/src/serialport/qtudev_p.h
+index af2dab2..8e17f64 100644
+--- a/src/serialport/qtudev_p.h
++++ b/src/serialport/qtudev_p.h
+@@ -111,9 +111,17 @@ inline QFunctionPointer resolveSymbol(QLibrary *udevLibrary, const char *symbolN
+ inline bool resolveSymbols(QLibrary *udevLibrary)
+ {
+     if (!udevLibrary->isLoaded()) {
++#ifdef NIXPKGS_LIBUDEV
++        udevLibrary->setFileNameAndVersion(QLatin1String(NIXPKGS_LIBUDEV), 1);
++#else
+         udevLibrary->setFileNameAndVersion(QStringLiteral("udev"), 1);
++#endif
+         if (!udevLibrary->load()) {
++#ifdef NIXPKGS_LIBUDEV
++            udevLibrary->setFileNameAndVersion(QLatin1String(NIXPKGS_LIBUDEV), 0);
++#else
+             udevLibrary->setFileNameAndVersion(QStringLiteral("udev"), 0);
++#endif
+             if (!udevLibrary->load()) {
+                 qWarning("Failed to load the library: %s, supported version(s): %i and %i", qPrintable(udevLibrary->fileName()), 1, 0);
+                 return false;
diff --git a/pkgs/development/libraries/qt-5/5.14/qttools.patch b/pkgs/development/libraries/qt-5/5.14/qttools.patch
new file mode 100644
index 0000000000000..8ae12198ca258
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qttools.patch
@@ -0,0 +1,15 @@
+--- a/src/macdeployqt/shared/shared.cpp
++++ b/src/macdeployqt/shared/shared.cpp
+@@ -1241,6 +1241,12 @@ bool deployQmlImports(const QString &appBundlePath, DeploymentInfo deploymentInf
+     if (!QFile(qmlImportScannerPath).exists())
+         qmlImportScannerPath = QCoreApplication::applicationDirPath() + "/qmlimportscanner";
+ 
++#ifdef NIXPKGS_QMLIMPORTSCANNER
++    // Fallback: Nixpkgs hardcoded path
++    if (!QFile(qmlImportScannerPath).exists())
++        qmlImportScannerPath = NIXPKGS_QMLIMPORTSCANNER;
++#endif
++
+     // Verify that we found a qmlimportscanner binary
+     if (!QFile(qmlImportScannerPath).exists()) {
+         LogError() << "qmlimportscanner not found at" << qmlImportScannerPath;
diff --git a/pkgs/development/libraries/qt-5/5.14/qtwebengine-darwin-no-platform-check.patch b/pkgs/development/libraries/qt-5/5.14/qtwebengine-darwin-no-platform-check.patch
new file mode 100644
index 0000000000000..546e753144d06
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtwebengine-darwin-no-platform-check.patch
@@ -0,0 +1,33 @@
+diff --git a/mkspecs/features/platform.prf b/mkspecs/features/platform.prf
+--- a/mkspecs/features/platform.prf
++++ b/mkspecs/features/platform.prf
+@@ -40,8 +40,6 @@ defineTest(isPlatformSupported) {
+   } else:osx {
+     # FIXME: Try to get it back down to 8.2 for building on OS X 10.11
+     !isMinXcodeVersion(8, 3, 3) {
+-      skipBuild("Using Xcode version $$QMAKE_XCODE_VERSION, but at least version 8.3.3 is required to build Qt WebEngine.")
+-      return(false)
+     }
+     !clang|intel_icc {
+         skipBuild("Qt WebEngine on macOS requires Clang.")
+@@ -54,8 +52,6 @@ defineTest(isPlatformSupported) {
+       return(false)
+     }
+     !isMinOSXSDKVersion(10, 12): {
+-      skipBuild("Building Qt WebEngine requires a macOS SDK version of 10.12 or newer. Current version is $${WEBENGINE_OSX_SDK_PRODUCT_VERSION}.")
+-      return(false)
+     }
+   } else {
+     skipBuild("Unknown platform. Qt WebEngine only supports Linux, Windows, and macOS.")
+diff --git a/src/core/config/mac_osx.pri b/src/core/config/mac_osx.pri
+--- a/src/core/config/mac_osx.pri
++++ b/src/core/config/mac_osx.pri
+@@ -5,8 +5,6 @@ load(functions)
+ # otherwise query for it.
+ QMAKE_MAC_SDK_VERSION = $$eval(QMAKE_MAC_SDK.$${QMAKE_MAC_SDK}.SDKVersion)
+ isEmpty(QMAKE_MAC_SDK_VERSION) {
+-     QMAKE_MAC_SDK_VERSION = $$system("/usr/bin/xcodebuild -sdk $${QMAKE_MAC_SDK} -version SDKVersion 2>/dev/null")
+-     isEmpty(QMAKE_MAC_SDK_VERSION): error("Could not resolve SDK version for \'$${QMAKE_MAC_SDK}\'")
+ }
+
+ QMAKE_CLANG_DIR = "/usr"
diff --git a/pkgs/development/libraries/qt-5/5.14/qtwebkit-darwin-no-qos-classes.patch b/pkgs/development/libraries/qt-5/5.14/qtwebkit-darwin-no-qos-classes.patch
new file mode 100644
index 0000000000000..a7087f517623a
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtwebkit-darwin-no-qos-classes.patch
@@ -0,0 +1,11 @@
+diff --git a/Source/cmake/OptionsQt.cmake b/Source/cmake/OptionsQt.cmake
+--- a/Source/cmake/OptionsQt.cmake
++++ b/Source/cmake/OptionsQt.cmake
+@@ -683,7 +683,6 @@ if (WIN32 AND COMPILER_IS_GCC_OR_CLANG)
+ endif ()
+ 
+ if (APPLE)
+-    SET_AND_EXPOSE_TO_BUILD(HAVE_QOS_CLASSES 1)
+ endif ()
+ 
+ if (ENABLE_MATHML)
diff --git a/pkgs/development/libraries/qt-5/5.14/qtwebkit-darwin-no-readline.patch b/pkgs/development/libraries/qt-5/5.14/qtwebkit-darwin-no-readline.patch
new file mode 100644
index 0000000000000..26d189d860195
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtwebkit-darwin-no-readline.patch
@@ -0,0 +1,45 @@
+diff --git a/Source/JavaScriptCore/shell/CMakeLists.txt b/Source/JavaScriptCore/shell/CMakeLists.txt
+--- a/Source/JavaScriptCore/shell/CMakeLists.txt
++++ b/Source/JavaScriptCore/shell/CMakeLists.txt
+@@ -9,7 +9,6 @@ set(JSC_LIBRARIES
+ )
+ 
+ if (WTF_OS_MAC_OS_X)
+-    list(APPEND JSC_LIBRARIES edit)
+ endif ()
+ 
+ if ("${JavaScriptCore_LIBRARY_TYPE}" MATCHES "STATIC")
+diff --git a/Source/WTF/wtf/Platform.h b/Source/WTF/wtf/Platform.h
+--- a/Source/WTF/wtf/Platform.h
++++ b/Source/WTF/wtf/Platform.h
+@@ -563,7 +563,6 @@
+ #if PLATFORM(IOS)
+ 
+ #define HAVE_NETWORK_EXTENSION 1
+-#define HAVE_READLINE 1
+ #if USE(APPLE_INTERNAL_SDK)
+ #define USE_CFNETWORK 1
+ #endif
+@@ -650,7 +649,6 @@
+ #define HAVE_MADV_DONTNEED 1
+ #define HAVE_MERGESORT 1
+ #define HAVE_PTHREAD_SETNAME_NP 1
+-#define HAVE_READLINE 1
+ #define HAVE_SYS_TIMEB_H 1
+ 
+ #if !PLATFORM(GTK) && !PLATFORM(QT)
+diff --git a/Source/WTF/wtf/PlatformMac.cmake b/Source/WTF/wtf/PlatformMac.cmake
+--- a/Source/WTF/wtf/PlatformMac.cmake
++++ b/Source/WTF/wtf/PlatformMac.cmake
+@@ -2,11 +2,9 @@ set(WTF_LIBRARY_TYPE SHARED)
+ 
+ find_library(COCOA_LIBRARY Cocoa)
+ find_library(COREFOUNDATION_LIBRARY CoreFoundation)
+-find_library(READLINE_LIBRARY Readline)
+ list(APPEND WTF_LIBRARIES
+     ${COREFOUNDATION_LIBRARY}
+     ${COCOA_LIBRARY}
+-    ${READLINE_LIBRARY}
+     libicucore.dylib
+ )
+ 
diff --git a/pkgs/development/libraries/qt-5/5.14/qtwebkit.patch b/pkgs/development/libraries/qt-5/5.14/qtwebkit.patch
new file mode 100644
index 0000000000000..b94a4b76cbaba
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/qtwebkit.patch
@@ -0,0 +1,12 @@
+diff --git a/Source/WebKit2/PlatformQt.cmake b/Source/WebKit2/PlatformQt.cmake
+--- a/Source/WebKit2/PlatformQt.cmake
++++ b/Source/WebKit2/PlatformQt.cmake
+@@ -261,6 +261,7 @@
+ list(APPEND WebKit2_SYSTEM_INCLUDE_DIRECTORIES
+     ${GLIB_INCLUDE_DIRS}
+     ${GSTREAMER_INCLUDE_DIRS}
++    ${GSTREAMER_PBUTILS_INCLUDE_DIRS}
+     ${Qt5Quick_INCLUDE_DIRS}
+     ${Qt5Quick_PRIVATE_INCLUDE_DIRS}
+     ${SQLITE_INCLUDE_DIR}
+
diff --git a/pkgs/development/libraries/qt-5/5.14/srcs.nix b/pkgs/development/libraries/qt-5/5.14/srcs.nix
new file mode 100644
index 0000000000000..6ac958442f49b
--- /dev/null
+++ b/pkgs/development/libraries/qt-5/5.14/srcs.nix
@@ -0,0 +1,342 @@
+# DO NOT EDIT! This file is generated automatically.
+# Command: ./maintainers/scripts/fetch-kde-qt.sh pkgs/development/libraries/qt-5/5.14
+{ fetchurl, mirror }:
+
+{
+  qt3d = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qt3d-everywhere-src-5.14.2.tar.xz";
+      sha256 = "9da82f1cc4b7d416d31ec96224c59d221473a48f6e579eef978f7d2e3932c674";
+      name = "qt3d-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtactiveqt = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtactiveqt-everywhere-src-5.14.2.tar.xz";
+      sha256 = "b53517d5d128719773a2941ba52da10acd7aa3149948862bc08c98f5b64152a9";
+      name = "qtactiveqt-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtandroidextras = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtandroidextras-everywhere-src-5.14.2.tar.xz";
+      sha256 = "4a8fd92b5c49a663cf0bd492804eaf1574d11137e2cbdd41d6bf5fad0c3c4d76";
+      name = "qtandroidextras-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtbase = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtbase-everywhere-src-5.14.2.tar.xz";
+      sha256 = "48b9e79220941665a9dd827548c6428f7aa3052ccba8f4f7e039a94aa1d2b28a";
+      name = "qtbase-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtcharts = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtcharts-everywhere-src-5.14.2.tar.xz";
+      sha256 = "adb25203ea748d886cc3d8993c20def702115eccea311594592058134ba83bb7";
+      name = "qtcharts-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtconnectivity = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtconnectivity-everywhere-src-5.14.2.tar.xz";
+      sha256 = "abe67b3e3a775e2a2e27c62a5391f37007ffbe72bce58b96116995616cfcbc28";
+      name = "qtconnectivity-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtdatavis3d = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtdatavis3d-everywhere-src-5.14.2.tar.xz";
+      sha256 = "723c03db2d2805b1be4ca534ac7bc867a1a21894d33a7e9261a382f3fa9d0e20";
+      name = "qtdatavis3d-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtdeclarative = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtdeclarative-everywhere-src-5.14.2.tar.xz";
+      sha256 = "a3c4617adc9760347c93d2eb6c25d22f620cd22f44afa0494eb499a805831650";
+      name = "qtdeclarative-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtdoc = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtdoc-everywhere-src-5.14.2.tar.xz";
+      sha256 = "5a55cdb55af35eb222d06179567851c175f24a3732f7dee5be073df4a893172b";
+      name = "qtdoc-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtgamepad = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtgamepad-everywhere-src-5.14.2.tar.xz";
+      sha256 = "f77daadb4755cf760e11812264259fb103396fd1b06df1e06b5df162081c8d03";
+      name = "qtgamepad-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtgraphicaleffects = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtgraphicaleffects-everywhere-src-5.14.2.tar.xz";
+      sha256 = "487a7f858244a08264363733055a8cf8b00e77c658c5608cc462817d15e4b50f";
+      name = "qtgraphicaleffects-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtimageformats = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtimageformats-everywhere-src-5.14.2.tar.xz";
+      sha256 = "733eca0165c15e046b106039c989dac7f6bc2ecf215396d965ed065369264f8c";
+      name = "qtimageformats-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtlocation = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtlocation-everywhere-src-5.14.2.tar.xz";
+      sha256 = "c37708bc396f6dac397b49a6a268d5edb39e1c8296ca2337ce9e80bde04775cc";
+      name = "qtlocation-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtlottie = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtlottie-everywhere-src-5.14.2.tar.xz";
+      sha256 = "55d1392dc92cbec11263084360075dc5fc3fdc25c1969adfbdec84299b285978";
+      name = "qtlottie-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtmacextras = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtmacextras-everywhere-src-5.14.2.tar.xz";
+      sha256 = "d12587b46c84a7822194fc3ccf46f7c18ff3b31566d3dde4f5fe772f1d8776e5";
+      name = "qtmacextras-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtmultimedia = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtmultimedia-everywhere-src-5.14.2.tar.xz";
+      sha256 = "7acd8ede6835314206e407b35b668f0add67544577fb51fe67afb03137fb9fe9";
+      name = "qtmultimedia-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtnetworkauth = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtnetworkauth-everywhere-src-5.14.2.tar.xz";
+      sha256 = "4f00513dd18598487d02187b80b54c669662cf8a8f2573858c7f9282d7b9265e";
+      name = "qtnetworkauth-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtpurchasing = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtpurchasing-everywhere-src-5.14.2.tar.xz";
+      sha256 = "69b087001e8fcec5bb49ca333d5f44e6b7eb09f76421dc792fc9cd76dee9e851";
+      name = "qtpurchasing-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtquick3d = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtquick3d-everywhere-src-5.14.2.tar.xz";
+      sha256 = "0640696d501f2b0bf57f64e98f30bfa3e1cc19c11c0e05e43d4fdb0d20488b2e";
+      name = "qtquick3d-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtquickcontrols = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtquickcontrols-everywhere-src-5.14.2.tar.xz";
+      sha256 = "d55def1dd4ee1250bd6a4e76849f4e362368b6411c2216d5f669c761216d4461";
+      name = "qtquickcontrols-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtquickcontrols2 = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtquickcontrols2-everywhere-src-5.14.2.tar.xz";
+      sha256 = "faf7d349d8f4a8db36cd3c62a5724bcf689300f2fdb7dc1ea034392aab981560";
+      name = "qtquickcontrols2-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtquicktimeline = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtquicktimeline-everywhere-src-5.14.2.tar.xz";
+      sha256 = "83a45d0998cbc77f8094854a477ab1ac0838ae7fd822563d995df40149893a9e";
+      name = "qtquicktimeline-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtremoteobjects = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtremoteobjects-everywhere-src-5.14.2.tar.xz";
+      sha256 = "a6a601c4f4aab6fe41a462dae57033819f697e3317240a382cee45c08be614d6";
+      name = "qtremoteobjects-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtscript = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtscript-everywhere-src-5.14.2.tar.xz";
+      sha256 = "e9fd487ccb3cbf00e86b0b803aa79e9f6bbe7a337b8e97d069e040c3e0789bfe";
+      name = "qtscript-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtscxml = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtscxml-everywhere-src-5.14.2.tar.xz";
+      sha256 = "030cea352a56074f577200f967ef37c959b2767127de61f766f59b0d99763790";
+      name = "qtscxml-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtsensors = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtsensors-everywhere-src-5.14.2.tar.xz";
+      sha256 = "bccfca6910b0383d8f65823496ff5011abed2fa8fd446b4b27333d0fd7bb8c61";
+      name = "qtsensors-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtserialbus = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtserialbus-everywhere-src-5.14.2.tar.xz";
+      sha256 = "0b7762175a649a40c4dd619c5de61d772235dc86099343278e2c3229d0836a91";
+      name = "qtserialbus-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtserialport = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtserialport-everywhere-src-5.14.2.tar.xz";
+      sha256 = "a6d977dd723ad4d3368b5163691405b8852f809974a96ec54103494e834aea21";
+      name = "qtserialport-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtspeech = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtspeech-everywhere-src-5.14.2.tar.xz";
+      sha256 = "5e9e8ea62f0207ba894df1e136df0af9fc5443c7817d28c39f0ea2bbae9ec6da";
+      name = "qtspeech-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtsvg = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtsvg-everywhere-src-5.14.2.tar.xz";
+      sha256 = "c7d7faa01a3e7a6e4d38fafcec5529a488258218749779e6fa0e09a21173b5a1";
+      name = "qtsvg-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qttools = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qttools-everywhere-src-5.14.2.tar.xz";
+      sha256 = "5bb0cf7832b88eb6bc9d4289f98307eb14b16a453ad6cf42cca13c4fe1a053c5";
+      name = "qttools-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qttranslations = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qttranslations-everywhere-src-5.14.2.tar.xz";
+      sha256 = "2088ebee9f5dd0336c9fd11436899a95b7ce0141ce072290de1e8f315d82d1a6";
+      name = "qttranslations-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtvirtualkeyboard = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtvirtualkeyboard-everywhere-src-5.14.2.tar.xz";
+      sha256 = "364f3338563e617e7c964a37170b415b546c5f82965e781271f9dada3e3868d7";
+      name = "qtvirtualkeyboard-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtwayland = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtwayland-everywhere-src-5.14.2.tar.xz";
+      sha256 = "d31633ca718fb407cf70870613d45d0ed80aa04c058586ac3036bae1aff7832a";
+      name = "qtwayland-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtwebchannel = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtwebchannel-everywhere-src-5.14.2.tar.xz";
+      sha256 = "7d1dc8441523638c3d455c7d408ec65aebc073acab80e24063865f929231f874";
+      name = "qtwebchannel-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtwebengine = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtwebengine-everywhere-src-5.14.2.tar.xz";
+      sha256 = "e169d6a75d8c397e04f843bc1b9585950fb9a001255cd18d6293f66fa8a6c947";
+      name = "qtwebengine-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtwebglplugin = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtwebglplugin-everywhere-src-5.14.2.tar.xz";
+      sha256 = "eb4118910b65d03d8448658ac1646e860d337e59b82d6575beda21824e313417";
+      name = "qtwebglplugin-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtwebsockets = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtwebsockets-everywhere-src-5.14.2.tar.xz";
+      sha256 = "f06e62b18313fe1b40a35566e79645de4a8e7ac9f7717d1d98a06c5b49afca84";
+      name = "qtwebsockets-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtwebview = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtwebview-everywhere-src-5.14.2.tar.xz";
+      sha256 = "c61f9213ee84fd7408898c0194468208ffb51af9d257e87e6b53daf24f65ff4b";
+      name = "qtwebview-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtwinextras = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtwinextras-everywhere-src-5.14.2.tar.xz";
+      sha256 = "980f1bc31b37c8597c0bac55f69ecf00d1677218ce82f7bc3933236cb6d907f2";
+      name = "qtwinextras-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtx11extras = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtx11extras-everywhere-src-5.14.2.tar.xz";
+      sha256 = "be9a84a03a2ee81771215264e5dff7a996d04be6192b8cdaa1d41e319a81545a";
+      name = "qtx11extras-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+  qtxmlpatterns = {
+    version = "5.14.2";
+    src = fetchurl {
+      url = "${mirror}/official_releases/qt/5.14/5.14.2/submodules/qtxmlpatterns-everywhere-src-5.14.2.tar.xz";
+      sha256 = "219a876665345e3801baff71f31f30f5495c1cb9ab23fbbd27602632c80fcfb7";
+      name = "qtxmlpatterns-everywhere-src-5.14.2.tar.xz";
+    };
+  };
+}
diff --git a/pkgs/development/libraries/qt-5/modules/qtmultimedia.nix b/pkgs/development/libraries/qt-5/modules/qtmultimedia.nix
index d0bab88b2f214..42ed23bb6dc90 100644
--- a/pkgs/development/libraries/qt-5/modules/qtmultimedia.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtmultimedia.nix
@@ -1,5 +1,5 @@
 { qtModule, stdenv, qtbase, qtdeclarative, pkgconfig
-, alsaLib, gstreamer, gst-plugins-base, libpulseaudio
+, alsaLib, gstreamer, gst-plugins-base, libpulseaudio, wayland
 }:
 
 with stdenv.lib;
@@ -8,8 +8,9 @@ qtModule {
   name = "qtmultimedia";
   qtInputs = [ qtbase qtdeclarative ];
   nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ gstreamer gst-plugins-base libpulseaudio]
-    ++ optional (stdenv.isLinux) alsaLib;
+  buildInputs = [ gstreamer gst-plugins-base libpulseaudio ]
+    ++ optional (stdenv.isLinux) alsaLib
+    ++ optional (versionAtLeast qtbase.version "5.14.0" && stdenv.isLinux) wayland;
   outputs = [ "bin" "dev" "out" ];
   qmakeFlags = [ "GST_VERSION=1.0" ];
   NIX_LDFLAGS = optionalString (stdenv.isDarwin) "-lobjc";
diff --git a/pkgs/development/libraries/qt-5/modules/qttools.nix b/pkgs/development/libraries/qt-5/modules/qttools.nix
index c38eb0105e12c..fae90972978f0 100644
--- a/pkgs/development/libraries/qt-5/modules/qttools.nix
+++ b/pkgs/development/libraries/qt-5/modules/qttools.nix
@@ -11,6 +11,8 @@ qtModule {
   postPatch = ''
     sed -i "src/linguist/linguist.pro" \
         -e '/^cmake_linguist_config_version_file.input =/ s|$$\[QT_HOST_DATA.*\]|${getDev qtbase}|'
+    sed -i "src/qtattributionsscanner/qtattributionsscanner.pro" \
+        -e '/^cmake_qattributionsscanner_config_version_file.input =/ s|$$\[QT_HOST_DATA.*\]|${getDev qtbase}|'
   '';
 
   devTools = [
@@ -20,14 +22,18 @@ qtModule {
     "bin/qdoc"
     "bin/lconvert"
     "bin/designer"
-    "bin/qtattributesscanner"
+    "bin/qtattributionsscanner"
     "bin/lrelease"
+    "bin/lrelease-pro"
     "bin/pixeltool"
     "bin/lupdate"
+    "bin/lupdate-pro"
     "bin/qtdiag"
     "bin/qhelpgenerator"
     "bin/qtplugininfo"
     "bin/qthelpconverter"
+    "bin/lprodump"
+    "bin/qdistancefieldgenerator"
   ] ++ optionals stdenv.isDarwin [
     "bin/macdeployqt"
   ];
diff --git a/pkgs/development/python-modules/pyqtwebengine/default.nix b/pkgs/development/python-modules/pyqtwebengine/default.nix
index c4e10910db845..ff511103e5537 100644
--- a/pkgs/development/python-modules/pyqtwebengine/default.nix
+++ b/pkgs/development/python-modules/pyqtwebengine/default.nix
@@ -18,6 +18,11 @@ in buildPythonPackage rec {
     sha256 = "0xdzhl07x3mzfnr5cf4d640168vxi7fyl0fz1pvpbgs0irl14237";
   };
 
+  patches = [
+    # source: https://www.riverbankcomputing.com/pipermail/pyqt/2020-June/042985.html
+    ./fix-build-with-qt-514.patch
+  ];
+
   outputs = [ "out" "dev" ];
 
   nativeBuildInputs = [
diff --git a/pkgs/development/python-modules/pyqtwebengine/fix-build-with-qt-514.patch b/pkgs/development/python-modules/pyqtwebengine/fix-build-with-qt-514.patch
new file mode 100644
index 0000000000000..1ae911c14817b
--- /dev/null
+++ b/pkgs/development/python-modules/pyqtwebengine/fix-build-with-qt-514.patch
@@ -0,0 +1,31 @@
+diff --git a/sip/QtWebEngineWidgets/qwebenginecertificateerror.sip b/sip/QtWebEngineWidgets/qwebenginecertificateerror.sip
+index 5fb508f..7a4654a 100644
+--- a/sip/QtWebEngineWidgets/qwebenginecertificateerror.sip
++++ b/sip/QtWebEngineWidgets/qwebenginecertificateerror.sip
+@@ -48,7 +48,7 @@ public:
+ %If (QtWebEngine_5_8_0 -)
+         CertificateTransparencyRequired,
+ %End
+-%If (QtWebEngine_5_14_0 -)
++%If (QtWebEngine_5_15_0 -)
+         CertificateKnownInterceptionBlocked,
+ %End
+     };
+diff --git a/sip/QtWebEngineWidgets/qwebenginepage.sip b/sip/QtWebEngineWidgets/qwebenginepage.sip
+index 0dcbed2..9aa3443 100644
+--- a/sip/QtWebEngineWidgets/qwebenginepage.sip
++++ b/sip/QtWebEngineWidgets/qwebenginepage.sip
+@@ -663,10 +663,10 @@ signals:
+ %End
+
+ public:
+-%If (QtWebEngine_5_14_0 -)
++%If (QtWebEngine_5_15_0 -)
+     qint64 renderProcessPid() const;
+ %End
+-%If (QtWebEngine_5_14_0 -)
++%If (QtWebEngine_5_15_0 -)
+     void renderProcessPidChanged(qint64 pid);
+ %End
+ };
+
diff --git a/pkgs/development/python-modules/pyside2-tools/default.nix b/pkgs/development/python-modules/pyside2-tools/default.nix
index a96ea5d32ff85..9f1f94ffecbb5 100644
--- a/pkgs/development/python-modules/pyside2-tools/default.nix
+++ b/pkgs/development/python-modules/pyside2-tools/default.nix
@@ -6,6 +6,13 @@ stdenv.mkDerivation {
 
   inherit (pyside2) version src;
 
+  patches = [
+    # Upstream has a crazy build system only geared towards producing binary
+    # wheels distributed via pypi.  For this, they copy the `uic` and `rcc`
+    # binaries to the wheel.
+    ./remove_hacky_binary_copying.patch
+  ];
+
   postPatch = ''
     cd sources/pyside2-tools
   '';
@@ -18,8 +25,16 @@ stdenv.mkDerivation {
     "-DBUILD_TESTS=OFF"
   ];
 
+  # The upstream build system consists of a `setup.py` whichs builds three
+  # different python libraries and calls cmake as a subprocess.  We call cmake
+  # directly because that's easier to get working.  However, the `setup.py`
+  # build also creates a few wrapper scripts, which we replicate here:
   postInstall = ''
     rm $out/bin/pyside_tool.py
+
+    for tool in uic rcc; do
+      makeWrapper "$(command -v $tool)" $out/bin/pyside2-$tool --add-flags "-g python"
+    done
   '';
 
   postFixup = ''
diff --git a/pkgs/development/python-modules/pyside2-tools/remove_hacky_binary_copying.patch b/pkgs/development/python-modules/pyside2-tools/remove_hacky_binary_copying.patch
new file mode 100644
index 0000000000000..19dd8aaf101c1
--- /dev/null
+++ b/pkgs/development/python-modules/pyside2-tools/remove_hacky_binary_copying.patch
@@ -0,0 +1,50 @@
+--- pyside-setup-opensource-src-5.14.2/sources/pyside2-tools/CMakeLists.txt~	2020-07-17 10:51:14.498291075 +0200
++++ pyside-setup-opensource-src-5.14.2/sources/pyside2-tools/CMakeLists.txt	2020-07-17 10:52:20.165336508 +0200
+@@ -46,47 +46,6 @@
+     set(EXE_EXT "")
+ endif()
+ 
+-set(TOOLS_PATH "${_qt5Core_install_prefix}/bin")
+-set(UIC_PATH "${TOOLS_PATH}/uic${EXE_EXT}")
+-set(RCC_PATH "${TOOLS_PATH}/rcc${EXE_EXT}")
+-if (APPLE)
+-    set(DESIGNER_PATH "${TOOLS_PATH}/Designer.app")
+-else()
+-    set(DESIGNER_PATH "${TOOLS_PATH}/designer${EXE_EXT}")
+-endif()
+-
+-install(FILES "${UIC_PATH}"
+-        DESTINATION bin
+-        PERMISSIONS
+-        OWNER_EXECUTE OWNER_WRITE OWNER_READ
+-        GROUP_EXECUTE GROUP_READ
+-        WORLD_EXECUTE WORLD_READ)
+-
+-install(FILES "${RCC_PATH}"
+-        DESTINATION bin
+-        PERMISSIONS
+-        OWNER_EXECUTE OWNER_WRITE OWNER_READ
+-        GROUP_EXECUTE GROUP_READ
+-        WORLD_EXECUTE WORLD_READ)
+-
+-if (EXISTS ${DESIGNER_PATH})
+-    if (APPLE)
+-        install(DIRECTORY "${DESIGNER_PATH}"
+-                DESTINATION bin
+-                FILE_PERMISSIONS
+-                OWNER_EXECUTE OWNER_WRITE OWNER_READ
+-                GROUP_EXECUTE GROUP_READ
+-                WORLD_EXECUTE WORLD_READ)
+-    else()
+-        install(FILES "${DESIGNER_PATH}"
+-                DESTINATION bin
+-                PERMISSIONS
+-                OWNER_EXECUTE OWNER_WRITE OWNER_READ
+-                GROUP_EXECUTE GROUP_READ
+-                WORLD_EXECUTE WORLD_READ)
+-    endif()
+-endif()
+-
+ configure_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake"
+                "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
+                IMMEDIATE @ONLY)
diff --git a/pkgs/development/python-modules/pyside2/default.nix b/pkgs/development/python-modules/pyside2/default.nix
index e12db4d2e883a..f9d07be5796b2 100644
--- a/pkgs/development/python-modules/pyside2/default.nix
+++ b/pkgs/development/python-modules/pyside2/default.nix
@@ -3,11 +3,11 @@
 
 stdenv.mkDerivation rec {
   pname = "pyside2";
-  version = "5.12.6";
+  version = "5.14.2";
 
   src = fetchurl {
-    url = "https://download.qt.io/official_releases/QtForPython/pyside2/PySide2-${version}-src/pyside-setup-everywhere-src-${version}.tar.xz";
-    sha256 = "1n45l6xxyxs6cfp2l4rp8qs1c2fyfwyrdxa4qcpwfsqsi51rydsk";
+    url = "https://download.qt.io/official_releases/QtForPython/pyside2/PySide2-${version}-src/pyside-setup-opensource-src-${version}.tar.xz";
+    sha256 = "1cwjpv8qmjksi7cj4naw54h2afphw44chrf1pmfjamyyj8vz6ykw";
   };
 
   patches = [
diff --git a/pkgs/development/python-modules/pyside2/dont_ignore_optional_modules.patch b/pkgs/development/python-modules/pyside2/dont_ignore_optional_modules.patch
index 681e16a2bfd33..c9f17bea71b4e 100644
--- a/pkgs/development/python-modules/pyside2/dont_ignore_optional_modules.patch
+++ b/pkgs/development/python-modules/pyside2/dont_ignore_optional_modules.patch
@@ -1,6 +1,6 @@
---- pyside-setup-everywhere-src-5.12.3/sources/pyside2/CMakeLists.txt~	2019-06-15 19:07:48.368704430 +0200
-+++ pyside-setup-everywhere-src-5.12.3/sources/pyside2/CMakeLists.txt	2019-06-15 19:08:04.429489908 +0200
-@@ -219,7 +219,7 @@
+--- pyside-setup-opensource-src-5.14.2/sources/cmake_helpers/helpers.cmake~	2020-07-17 10:29:30.555285529 +0200
++++ pyside-setup-opensource-src-5.14.2/sources/cmake_helpers/helpers.cmake	2020-07-17 10:29:49.817003683 +0200
+@@ -139,7 +139,7 @@
      # If the module was found, and also the module path is the same as the
      # Qt5Core base path, we will generate the list with the modules to be installed
      set(looked_in_message ". Looked in: ${${_name_dir}}")
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f490366a7811c..94144998e876e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1348,7 +1348,7 @@ in
 
   boringtun = callPackage ../tools/networking/boringtun { };
 
-  boomerang = libsForQt5.callPackage ../development/tools/boomerang { };
+  boomerang = libsForQt512.callPackage ../development/tools/boomerang { };
 
   boost-build = callPackage ../development/tools/boost-build { };
 
@@ -6270,7 +6270,7 @@ in
 
   qarte = libsForQt5.callPackage ../applications/video/qarte { };
 
-  qlcplus = libsForQt5.callPackage ../applications/misc/qlcplus { };
+  qlcplus = libsForQt512.callPackage ../applications/misc/qlcplus { };
 
   qnial = callPackage ../development/interpreters/qnial { };
 
@@ -14520,9 +14520,26 @@ in
 
   libsForQt512 = recurseIntoAttrs (lib.makeScope qt512.newScope mkLibsForQt5);
 
+  qt514 = recurseIntoAttrs (makeOverridable
+    (import ../development/libraries/qt-5/5.14) {
+      inherit newScope;
+      inherit stdenv fetchurl fetchpatch fetchFromGitHub makeSetupHook makeWrapper;
+      inherit bison;
+      inherit cups;
+      inherit dconf;
+      inherit harfbuzz;
+      inherit libGL;
+      inherit perl;
+      inherit gtk3;
+      inherit (gst_all_1) gstreamer gst-plugins-base;
+      inherit llvmPackages_5;
+    });
+
+  libsForQt514 = recurseIntoAttrs (lib.makeScope qt514.newScope mkLibsForQt5);
+
   # TODO bump to 5.12 on darwin once it's not broken
-  qt5 = qt512;
-  libsForQt5 = libsForQt512;
+  qt5 = qt514;
+  libsForQt5 = libsForQt514;
 
   qt5ct = libsForQt5.callPackage ../tools/misc/qt5ct { };
 
@@ -17912,7 +17929,7 @@ in
 
   sdparm = callPackage ../os-specific/linux/sdparm { };
 
-  sdrangel = libsForQt5.callPackage ../applications/radio/sdrangel {  };
+  sdrangel = libsForQt512.callPackage ../applications/radio/sdrangel {  };
 
   sepolgen = callPackage ../os-specific/linux/sepolgen { };
 
@@ -27014,7 +27031,7 @@ in
     inherit pkgs;
   };
 
-  golden-cheetah = libsForQt5.callPackage ../applications/misc/golden-cheetah {};
+  golden-cheetah = libsForQt512.callPackage ../applications/misc/golden-cheetah {};
 
   linkchecker = callPackage ../tools/networking/linkchecker { };