CMake/Utilities/Release/WiX/patch_path_env.xml

<CPackWiXPatch>
  <CPackWiXFragment Id="CM_DP_bin">
    <!-- Implement the "CMAKE_IN_PATH" checkbox when installing for all users.  -->
    <Component Id="CMakeSystemPathEntryCMP" KeyPath="yes" Guid="0E782367-5D68-4539-81D1-B9757AE496A1" Condition="CMAKE_IN_PATH AND ALLUSERS">
      <Environment Id="CMakeSystemPathEntryENV" Action="set" Part="last"
        Name="PATH" Value="[INSTALL_ROOT]bin"
        System="yes"/>
    </Component>

    <!-- Implement the "CMAKE_IN_PATH" checkbox when installing per-user.  -->
    <!-- This is not currently reachable, but is reserved for future use.  -->
    <Component Id="CMakeUserPathEntryCMP" KeyPath="yes" Guid="392E524D-D5BF-4F16-A7AF-A82B07482CB9" Condition="CMAKE_IN_PATH AND NOT ALLUSERS">
      <Environment Id="CMakeUserPathEntryENV" Action="set" Part="last"
        Name="PATH" Value="[INSTALL_ROOT]bin"
        System="no"/>
    </Component>
  </CPackWiXFragment>

  <CPackWiXFragment Id="#PRODUCTFEATURE">
    <ComponentRef Id="CMakeSystemPathEntryCMP"/>
    <ComponentRef Id="CMakeUserPathEntryCMP"/>
  </CPackWiXFragment>
</CPackWiXPatch>