I guess darklang was too far ahead in their thinking in some areas and choose the wrong path for other. I really liked the deployless idea, but would have loved in even more on-premise. No way to get the data to stay in Europe.
Making hard connections between the editor and the lang was interesting also. Seems like they have moved away from that.
Hope there is a easy way to set it up locally, i was really intrigued when they first launched