On a fresh 18.04 install iI'm getting the following error. There might have been an update to catkin_tools that broke our package.
$ ros-get ws-create someproject.yaml .
error: could not configure catkin workspace: Cannot load environment from resultspace "/home/user/catkin_ws" because it does not appear to be a catkin-generated resultspace (missing .catkin marker file).
[ERROR] ros_get.workspace: catkin config error