The GIMP community is experimenting on converting the GIMP Windows package to UWP/Microsoft Store-ready material using the Desktop Bridge (visit https://developer.microsoft.com/en-us/windows/bridges/desktop), and needs a little help I believe can be assisted by the PortableApps community, due to the "containerized" nature of how PortableApps work. (Dependency errors are everywhere when the standard GIMP for Windows install is converted using the Desktop Bridge.)
If anyone wants to help, please drop by https://gitlab.gnome.org/GNOME/gimp/issues/1145/.
Thanks!