the handin-server
package needs to be installed.
If it is not, you can fix this by pulling [email protected]:ps-tuebingen/handin.git
and running
raco pkg install -n handin $(pwd)
in it.
Install this via
raco pkg install -n grading-statistics $(pwd)
Example:
racket -l statistics-tool stats <handin-directory>
should give statistics about the number of grade files etc.