Add qtEnv

pkgs/development/libraries/qt-5/qt-env.nix

@@ -0,0 +1,31 @@
+{ runCommand, lndir }:
+
+{ paths, qtbase }:
+
+runCommand "qt-env" { inherit paths qtbase; } ''
+
+mkdir -p "$out/bin" "$out/mkspecs" "$out/include" "$out/lib" "$out/share"
+
+cp "$qtbase/bin/qmake" "$out/bin"
+cat >"$out/bin/qt.conf" <<EOF
+[Paths]
+Prefix = $out
+Plugins = lib/qt5/plugins
+Imports = lib/qt5/imports
+Qml2Imports = lib/qt5/qml
+Documentation = share/doc/qt5
+EOF
+
+for path in $paths; do
+    if [[ -d "$path/mkspecs" ]]; then
+        ${lndir}/bin/lndir -silent "$path/mkspecs" "$out/mkspecs"
+
+        for dir in bin include lib share; do
+            if [[ -d "$path/$dir" ]]; then
+                ${lndir}/bin/lndir -silent "$path/$dir" "$out/$dir"
+            fi
+        done
+    fi
+done
+
+''

pkgs/top-level/all-packages.nix

@@ -7999,6 +7999,8 @@ let
     buildExamples = true;
     buildTests = true;
     developerBuild = true;
+  qtEnv = callPackage ../development/libraries/qt-5/qt-env.nix {};
+
   });
 
   qt5SDK = qtcreator.override {