CPack NSIS: MUI_HEADERIMAGE_BITMAP not easily configurable
MUI_HEADERIMAGE_BITMAP is used to show a rectangular image in the windows header-area.
However in cpack it is set to
CPACK_PACKAGE_ICON, which seems to be an unsuitable choice (isn't this supposed to be a normal program icon?)
Also there does not seem to be a variable specific to the CPack NSIS Generator that would allow to set a more suitable image.