I'm building a snap that depends on libsdl2, which depends on several X11 packages. One of these packages installs `/usr/bin/X11/` and `/usr/bin/X11/X11`, which is a link to `.`. When snapcraft encounters this structure and tries to copy it into the snap, it fails: "'/myapp/package/parts/love/install/usr/bin/X11' and '/myapp/package/stage/usr/bin/X11/X11' are the same file"