Hey all, I've been trying to do some more unsafe bits with the Entities package and have run into an interesting solution to avoid having to use reflection for grabbing internal methods and types. Assembly Definition References. If I make a new folder, add an asmref file and point it add `Unity.Entities` it allows to to extend that assembly as if I was altering the package directly. This is super useful for implementing things such as copying components from 1 entity to another, which are near impossible to do with the public API. However there is a down side. It seems the current editor version have a bug that the csproj's generated will generate an incomplete csproj for Unity.Entities when the asmref is present. Is there any idea if this will be fixed? https://fogbugz.unity3d.com/default.asp?1240286_3ogmlikr9bt3fgkc A current workaround is checking the `Edit->Preferences->External Tools->Generate all .csproj files` Note that compilation works either way, it's just the IDE (Rider in my case) that gets confused.