      _qt5_Help_check_file_exists(${imported_location})
  
      set_target_properties(Qt5::qcollectiongenerator PROPERTIES
-Index: qttools-opensource-src-5.5.1/src/linguist/Qt5LinguistToolsConfig.cmake.in
-===================================================================
---- qttools-opensource-src-5.5.1.orig/src/linguist/Qt5LinguistToolsConfig.cmake.in
-+++ qttools-opensource-src-5.5.1/src/linguist/Qt5LinguistToolsConfig.cmake.in
-@@ -44,11 +44,10 @@ endmacro()
+@@ -17,11 +16,10 @@
+ if (NOT TARGET Qt5::qhelpgenerator)
+     add_executable(Qt5::qhelpgenerator IMPORTED)
+ 
+-!!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+-    set(imported_location \"${_qt5Help_install_prefix}/$${CMAKE_BIN_DIR}qhelpgenerator$$CMAKE_BIN_SUFFIX\")
+-!!ELSE
+-    set(imported_location \"$${CMAKE_BIN_DIR}qhelpgenerator$$CMAKE_BIN_SUFFIX\")
+-!!ENDIF
++    set(imported_location \"@NIX_OUT@/$${CMAKE_BIN_DIR}qhelpgenerator$$CMAKE_BIN_SUFFIX\")
++    if(NOT EXISTS \"${imported_location}\")
++        set(imported_location \"@NIX_DEV@/$${CMAKE_BIN_DIR}qhelpgenerator$$CMAKE_BIN_SUFFIX\")
++    endif()
+     _qt5_Help_check_file_exists(${imported_location})
+ 
+     set_target_properties(Qt5::qhelpgenerator PROPERTIES
+diff -Naur qttools-opensource-src-5.7.1.orig/src/linguist/Qt5LinguistToolsConfig.cmake.in qttools-opensource-src-5.7.1/src/linguist/Qt5LinguistToolsConfig.cmake.in
+--- qttools-opensource-src-5.7.1.orig/src/linguist/Qt5LinguistToolsConfig.cmake.in	2016-11-03 09:31:16.000000000 +0100
++++ qttools-opensource-src-5.7.1/src/linguist/Qt5LinguistToolsConfig.cmake.in	2017-02-28 16:35:40.470100681 +0100
+@@ -44,11 +44,10 @@
  if (NOT TARGET Qt5::lrelease)
      add_executable(Qt5::lrelease IMPORTED)
  

     _qt5_LinguistTools_check_file_exists(${imported_location})
 
     set_target_properties(Qt5::lrelease PROPERTIES
@@ -59,11 +58,10 @@ endif()
 if (NOT TARGET Qt5::lupdate)
     add_executable(Qt5::lupdate IMPORTED)
 

diff -Naur qttools-opensource-src-5.7.1.orig/src/assistant/help/Qt5HelpConfigExtras.cmake.in qttools-opensource-src-5.7.1/src/assistant/help/Qt5HelpConfigExtras.cmake.in
--- qttools-opensource-src-5.7.1.orig/src/assistant/help/Qt5HelpConfigExtras.cmake.in	2016-11-03 09:31:16.000000000 +0100
+++ qttools-opensource-src-5.7.1/src/assistant/help/Qt5HelpConfigExtras.cmake.in	2017-02-28 16:37:20.130457615 +0100
@@ -2,11 +2,10 @@
 if (NOT TARGET Qt5::qcollectiongenerator)
     add_executable(Qt5::qcollectiongenerator IMPORTED)
