Issue #18807 relates to symlinks not being available, or not being wanted by the user creating the environment. The lib64 symlink is (currently) the only case where we symlink to a directory (in the other cases, such as aliases for the interpreter, we can use copies rather than symlinks). I propose to make a change such that if copying rather than symlinking is specified, the lib64 link simply isn't created - a copy would be of no use here.